ChemElectroChem

Cover image for Vol. 4 Issue 11

Early View (Online Version of Record published before inclusion in an issue)

Editor: Greta Heydenrych; Editorial Board Chairs: Bing-Wei Mao, Wolfgang Schuhmann, Jean-Marie Tarascon

Impact Factor: 4.136

ISI Journal Citation Reports © Ranking: 2016: 8/29 (Electrochemistry)

Online ISSN: 2196-0216

Associated Title(s): Angewandte Chemie International Edition, Chemistry - A European Journal, ChemCatChem, ChemPhotoChem, ChemPhysChem, ChemSusChem, Electroanalysis

VIEW

  1. 1 - 98
  1. Articles

    1. Intrinsic Electrocatalysis in DNA

      Prof. Emil Paleček and Dr. Martin Bartošík

      Version of Record online: 23 NOV 2017 | DOI: 10.1002/celc.201700888

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      DNA assessment: DNA catalyzes hydrogen evolution on mercury and solid amalgam electrodes. This phenomenon can be utilized for label-free and structure-sensitive DNA analysis. Sensitivity of the DNA determination is greatly enhanced in presence of cobalt ions.

    2. Electrochemical Formation of Gold Nanoparticles on Polycrystalline Gold Electrodes during Prolonged Potential Cycling

      Paula Ahrens, Manfred Zander, Dr. Ulrich Hasse, Dr. Harm Wulff, Dr. Chinnaya Jeyabharathi, Dr. Angela Kruth and Prof. Dr. Fritz Scholz

      Version of Record online: 23 NOV 2017 | DOI: 10.1002/celc.201700745

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      Be diligent: Prolonged potential cycling of polycrystalline gold electrodes in sulfuric acid solution leads to the formation of immobilized gold nanocrystals on the electrode surface. Electrochemical methods, X-ray diffraction, and scanning electron microscopy are bundled to shed light on these crystallites, their formation, and the influence of surface pretreatment.

    3. Nitrogen-Doped Hierarchically Porous Carbon Materials with Enhanced Performance for Supercapacitor

      Rong Zeng, Xiannong Tang, Bingyu Huang, Prof. Dr. Kai Yuan and Prof. Dr. Yiwang Chen

      Version of Record online: 22 NOV 2017 | DOI: 10.1002/celc.201701021

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      Follow the hierarchy: A nitrogen-doped hierarchical porous carbon (NHPC) material with a large surface area of 1091 m2 g−1 is successfully synthesized from a gelatin and graphene oxide composite through a combined solvation volatilization/nano-CaCO3 template/KOH activation method. The obtained NHPC delivers a high specific capacitance of 234 F g−1 and exhibits an excellent cycling stability (retaining >98 % after 5000 cycles) as well as a high energy density of 9.43 Wh kg−1.

    4. Hybrid Sulfur−Selenium Co-polymers as Cathodic Materials for Lithium Batteries

      Iñaki Gomez, Daniele Mantione, Olatz Leonet, Dr. J. Alberto Blazquez and Prof. David Mecerreyes

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201700882

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      Added boost: Sulfur and selenium are co-polymerized by inverse vulcanization and investigated as cathodic materials for lithium batteries. Raman spectroscopy and 77Se NMR, together with cyclic voltammetry, confirm the formation of the Se−S hybrid materials. The presence of Se improves the cyclic performance of the hybrids in lithium−sulfur battery cells.

    5. Water-Soluble Green Binder for Li4Ti5O12 Anodes: Effect of Binder Choice on Lithium Storage

      Saravanan Karuppiah, Dr. Sylvain Franger and Dr. Kalaiselvi Nallathamby

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201700963

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      In a bind: Water-soluble LA132 is successfully used as a binder for the Li4Ti5O12 (LTO) anode instead of traditional PVdF with promising results.

    6. Co-doping Nitrogen/Sulfur through a Solid-State Reaction to Enhance the Electrochemical Performance of Anatase TiO2 Nanoparticles as a Sodium-Ion Battery Anode

      Wei Song, Hanqing Zhao, Liqin Wang, Prof. Shibin Liu and Prof. Zhong Li

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201701015

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      Double doping: Compared with pristine TiO2, N/S-TiO2 with more oxygen vacancies and an expanded unit cell shows an improved rate performance up to 80 %.

    7. Polymeric Ionic Liquid−Poly(ethylene glycol) Composite Polymer Electrolytes for High-Temperature Lithium-Ion Batteries

      Sijian Li, Dr. Zhengxi Zhang, Kaihua Yang and Prof. Li Yang

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201700984

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      PEG power: Polymeric ionic liquid-poly(ethylene glycol) composite electrolytes show good ionic conductivity, high thermal and electrochemical stabilities, and allow successful battery operation at high temperature.

    8. Spectroelectrochemical Investigation of the Charge Carrier Kinetics of Gold-Decorated Cadmium Chalcogenide Nanorods

      Jan F. Miethe, Franziska Lübkemann, Dr. Jan Poppe, Frank Steinbach, Dr. Dirk Dorfs and Prof. Nadja C. Bigall

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201700798

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      Across the divide: The interfacial transfer of charge carriers across the nanoparticle–electrolyte boundary is investigated for complex-shaped semiconductor and metal–semiconductor nano-heteroparticles. The influence of the presence of CdSe domains within the CdS nanorod and gold domain decoration is investigated spectroelectrochemically. Submonolayer of the mentioned nanoparticles were prepared by linking the nanoparticles on transparent ITO glass.

    9. Very Important Paper

      A Coconut Leaf Sheath Derived Graphitized N-Doped Carbon Network for High-Performance Supercapacitors

      Anjali Jayakumar, Dr. Jun Zhao and Prof. Jong-Min Lee

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201701133

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      A lovely bunch: Coconut leaf sheath, a coconut tree fiber, is used to synthesize a highly graphitized and optimized nitrogen-doped carbon network by using a carbonization and physical activation technique. In this work, the high energy storage properties of the carbon material are demonstrated for use in supercapacitors.

  2. Communications

    1. Leaded Bronze: An Innovative Lead Substitute for Cathodic Electrosynthesis

      Dr. Christoph Gütz, Valentine Grimaudo, Michael Holtkamp, Dr. Marius Hartmer, Janina Werra, Dr. Lisa Frensemeier, Anton Kehl, Prof. Dr. Uwe Karst, PD Dr. Peter Broekmann and Prof. Dr. Siegfried R. Waldvogel

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201701061

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      The bronze age: Significantly enhanced stability in electro-organic reductions is found for leaded bronzes. The performance is comparable with pure lead and, in several cases, even superior. This makes leaded bronzes an attractive cathodic material for electrosynthetic applications.

  3. Articles

    1. Dopamine Self-Polymerization Enables an N-Doped Carbon Coating of Exfoliated MoS2 Nanoflakes for Anodes of Lithium-Ion Batteries

      Hang Zhao, Jianlong Li, Hao Wu, Tiange Dong, Yun Zhang and Prof. Heng Liu

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201700842

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      Exfoliation and carbon coating: The exfoliation and polydopamine coating method are combined to prepare a N-doped carbon coating of exfoliated MoS2 nanoflakes for anodes of lithium-ion batteries. The exfoliation treatment reduced the MoS2 particle size and shortened the Li-ion migration path. The N-doped carbon coating enhanced the conductivity of exfoliated MoS2 nanoflakes, promoted the lithium ion transport, and enhanced the corresponding electrochemical performance. The discharge specific capacity could be stabilized at 562 mAh g−1 after 200 cycles at a current density of 0.5 A g−1.

    2. An Interface-Controlled Redox Switch for Wastewater Remediation

      Siddhi Khaire, Pramod Gaikwad, Shambhulinga Aralekallu, Zahid Manzoor Bhat, Alagar Raja Kottaichamy, Mruthyunjayachari Chattanahalli Devendrachari, Ravikumar Thimmappa, Shahid Pottachola Shafi, Manu Gautam and Dr. Musthafa Ottakam Thotiyl

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201700942

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      Waterworks: An interface-controlled command control chemical switch for wastewater treatment.

    3. Bifunctional Electrocatalysts (Co9S8@NSC) Derived from a Polymer−Metal Complex for the Oxygen Reduction and Oxygen Evolution Reactions

      Prof. Saad M Alshehri, Dr. Jahangeer Ahmed, Dr. Aslam Khan, Dr. Mu Naushad and Dr. Tansir Ahamad

      Version of Record online: 21 NOV 2017 | DOI: 10.1002/celc.201700955

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      Time to split: The synthesis of Co9S8 nanocrystals encapsulated in nitrogen/sulfur-doped mesoporous graphitized carbon derived from a polymer−metal complex is reported. The nanocrystals exhibit similar electrocatalytic activity and superior stability for water-splitting reactions (oxygen reduction/oxygen evolution). The remarkable electrochemical properties are mainly attributed to the synergetic effects between Co9S8, heteroatoms, and graphitized carbon in alkaline medium, especially for the oxygen evolution reaction.

    4. Nickel-Substituted Copper Hexacyanoferrate as a Superior Cathode for Aqueous Sodium-Ion Batteries

      Wanfeng Li, Fang Zhang, Prof. Xingde Xiang and Prof. Xiucheng Zhang

      Version of Record online: 16 NOV 2017 | DOI: 10.1002/celc.201700958

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      Feeling blue? Ni-substituted copper hexacyanoferrates can serve as superior cathodes for aqueous sodium-ion batteries, showing a high working potential (0.62 V vs. Ag/AgCl), outstanding high-rate capacity (56 mAh g−1 at 10 C) and excellent cycling performance (capacity retention of 96 % after 1000 cycles). This finding indicates that Ni substitution is an effective strategy to improve the Na-storage performance of Prussian blue analogues.

  4. Communications

    1. Fabricating Sulfur/Oxygen Co-Doped Crumpled Graphene for High-Performance Oxygen Reduction Reaction Electrocatalysis

      Dr. Mei Guo, Chaochao Qiu, Yu Li, Xiuyan Jin, Dr. Guoxin Zhang and Prof. Xiaoming Sun

      Version of Record online: 16 NOV 2017 | DOI: 10.1002/celc.201701158

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      In a crump: Defect-rich crumpled graphene oxide (CGO) is fabricated by using a modified Hummers method, followed by fast thermal treatment. Abundant defective and doping sites are created, presenting on the crumpled edges. Highly comparable oxygen reduction reaction performance of the CGO is demonstrated relative to commercial Pt/C.

  5. Articles

    1. On the Effect of Silicon Substitution in Na3V2(PO4)3 on the Electrochemical Behavior as Cathode for Sodium-Ion Batteries

      María J. Aragón, Dr. Pedro Lavela, Gregorio F. Ortiz, Ricardo Alcántara and José L. Tirado

      Version of Record online: 15 NOV 2017 | DOI: 10.1002/celc.201700933

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      Be positive: Phosphosilicates in sodium-ion cells can offer a good strategy to improve cell performance. A new Na3+xV2(PO4)3−x(SiO4)x series reveals appropriated structural and morphological changes, favoring ion diffusion and, hence, the rate capability and cyclability of sodium cells assembled with these materials as positive electrodes.

    2. Enhanced Electrochemical Performance of a Tin−Antimony Alloy/N-Doped Carbon Nanocomposite as a Sodium-Ion Battery Anode

      Dr. Duck Hyun Youn, Dr. Hunmin Park, Kathryn E. Loeffler, Dr. Jun-Hyuk Kim, Prof. Adam Heller and Prof. C. Buddie Mullins

      Version of Record online: 15 NOV 2017 | DOI: 10.1002/celc.201700828

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      Top performer: A simple strategy to synthesize metal nanoparticles/nitrogen-doped carbon (NC) composites is reported. The prepared SnSn/NC electrode exhibits better performance as a sodium-ion battery anode than Sn/NC and Sb/NC electrodes.

    3. Porous Ni−Mo−S Nanowire Network Film Electrode as a High-Efficiency Bifunctional Electrocatalyst for Overall Water Splitting

      Zizai Ma, Huijie Meng, Mei Wang, Prof. Bin Tang, Prof. Jinping Li and Prof. Xiaoguang Wang

      Version of Record online: 14 NOV 2017 | DOI: 10.1002/celc.201700965

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      Moral support: A novel 3D self-supported Ni−Mo−S nanowire network film electrode, prepared through electroplating and hydrothermal route, exhibits remarkable catalytic activity and stability for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline medium. The high surface area and optimal hybrid crystalline nature enable the excellent catalytic activities.

    4. Improved Electrocatalytic Performance of Tailored Metal-Free Nitrogen-Doped Ordered Mesoporous Carbons for the Oxygen Reduction Reaction

      Haihong Zhong, Shuwei Zhang, Jiawei Jiang, Prof. Dr. Dianqing Li, Dr. Pinggui Tang, Prof. Dr. Nicolas Alonso-Vante and Prof. Dr. Yongjun Feng

      Version of Record online: 14 NOV 2017 | DOI: 10.1002/celc.201700910

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      Tailor-made: Metal-free nitrogen-doped ordered mesoporous carbons are tailored from home-made mesoporous carbon CMK-3. The different amounts of N doping is provided by melamine as the nitrogen source. The corresponding electrocatalytic performance for oxygen reduction reaction in KOH is evaluated.

  6. Cover Profile

    1. You have free access to this content
      Electrochemical Evaluation of Titanocenes in Ionic Liquids with Non-coordinating and Coordinating Anions and Application for NH3 Synthesis

      Akira Katayama, Prof. Tomohiko Inomata, Prof. Tomohiro Ozawa and Prof. Hideki Masuda

      Version of Record online: 13 NOV 2017 | DOI: 10.1002/celc.201701180

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      UV-Vis/NIR spectra recorded during the electrochemical reduction of [Cp2TiCl2] reveal that it was converted to [(Cp2TiCl)2] in ionic liquid (IL) through the formation of [Cp2TiCl]. The electrochemical NH3 syntheses by using [Cp2TiCl2] in IL are also demonstrated in a solid polymer electrolyte cell, which produce NH3…” Find out more about the story behind the front cover research at 10.1002/celc.201700557.

  7. Articles

    1. A General Approach Based on Sampled-Current Voltammetry for Minimizing Electrode Fouling in Electroanalytical Detection

      Isabelle Mazerie, Pierre Didier, Florence Razan, Philippe Hapiot, Nathalie Coulon, Aurélie Girard, Olivier de Sagazan, Didier Floner and Dr. Florence Geneste

      Version of Record online: 13 NOV 2017 | DOI: 10.1002/celc.201700884

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      No foul play: Electrochemical analysis of species known to passivate electrode surfaces remains challenging. In this work, the effectiveness of sampled-current voltammetry on an electrode array to circumvent electrode fouling is demonstrated with the analysis of phenol solutions at high concentrations.

  8. Reviews

    1. You have free access to this content
      The Applications of Metal−Organic Frameworks in Electrochemical Sensors

      Dr. Lantao Liu, Dr. Yanli Zhou, Dr. Shuang Liu and Prof. Maotian Xu

      Version of Record online: 13 NOV 2017 | DOI: 10.1002/celc.201700931

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      Making sense of it all: Recent progress in the development of techniques for electrochemical sensors based on metal−organic framework (MOF) materials are summarized. With the advancement of nanotechnology, MOF-based materials will display promising applications and offer a proof-of-concept in electrochemical sensing.

  9. Cover Pictures

    1. You have free access to this content
      Electrochemical Evaluation of Titanocenes in Ionic Liquids with Non-coordinating and Coordinating Anions and Application for NH3 Synthesis

      Akira Katayama, Prof. Tomohiko Inomata, Prof. Tomohiro Ozawa and Prof. Hideki Masuda

      Version of Record online: 10 NOV 2017 | DOI: 10.1002/celc.201701181

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      The Front Cover shows a firework, whose powder explosive comes from chemicals containing N atoms that are made from NH3. In their Article, A. Katayama et al. demonstrate electrochemical NH3 syntheses by using [Cp2TiCl2] in ionic liquid in a solid polymer electrolyte cell. UV-Vis/NIR spectra recorded during the electrochemical reduction of [Cp2TiCl2] reveal that it was converted to [(Cp2TiCl)2] in ionic liquid through the formation of [Cp2TiCl]. More information can be found in the Article by A. Katayama et al.

    2. You have free access to this content
      Highly Ordered, Ultralong Mn-Based Nanowire Films with Low Contact Resistance as Freestanding Electrodes for Flexible Supercapacitors with Enhanced Performance

      Dr. Junli Zhou, Prof. Lin Yu, Prof. Yulin Deng, Prof. Yin Yang, Prof. Zhifeng Hao and Prof. Ming Sun

      Version of Record online: 10 NOV 2017 | DOI: 10.1002/celc.201701182

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      The Cover Feature shows that ultralong manganese dioxide/polyaniline coaxial nanowires (NWs) with highly ordered orientation provide a longer and continuous electron transportation pathway in the electrode compared to disordered NWs, which could greatly reduce the inter-junction resistance between NWs in a film to achieve high capacitance. More information can be found in the Article by J. Zhou et al.

    3. You have free access to this content
      Improving the Structural Stability of Li-Rich Layered Cathode Materials by Constructing an Antisite Defect Nanolayer through Polyanion Doping

      Leilei Ma, Lei Mao, Xiaofeng Zhao, Jianhao Lu, Fan Zhang, Pengchong Ding, Lizefang Chen and Prof.Prof. Fang Lian

      Version of Record online: 10 NOV 2017 | DOI: 10.1002/celc.201701183

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      The Cover Feature illustrates that some antisite defects with transition-metal ions substituting Li-ion sites are induced on the surface, which leads to the promising structural stability of Li-rich layered cathode materials for lithium-ion batteries. More information can be found in the Article by L. Ma et al.

    4. You have free access to this content
      Specific Ion Effects on the Mediated Oxidation of NADH

      Cristina Carucci, Prof. Andrea Salis and Prof. Edmond Magner

      Version of Record online: 10 NOV 2017 | DOI: 10.1002/celc.201701184

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      The Cover Feature illustrates the changes in the faradic current for the catalytic oxidation of NADH by ABTS as a function of electrolyte with the response following the Hofmeister specific-ion series. More information can be found in the Article by C. Carucci et al.

  10. Articles

    1. Simultaneous Electrospinning and Electrospraying: Fabrication of a Carbon Nanofibre/MnO/Reduced Graphene Oxide Thin Film as a High-Performance Anode for Lithium-Ion Batteries

      Fan Wang, Prof. Jianxin Cai, Prof. Ji Yu, Prof. Chao Li and Prof. Zhenyu Yang

      Version of Record online: 9 NOV 2017 | DOI: 10.1002/celc.201701012

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      Multi-tasking: A CNF/MnO/rGO thin film (CNF=carbon nanofibre; rGO=reduced graphene oxide) towards a robust, high-performance anode for lithium-ion batteries has been fabricated by simultaneous electrospinning and electrospraying. The conductivity, robustness and flexibility of the film is enhanced, resulting in an obvious improvement of the specific capacity and cycling life for the MnO thin film anodes.

    2. WO3 Mesoporous Nanobelts towards Efficient Photoelectrocatalysts for Water Splitting

      Kai Song, Prof. Fengmei Gao, Prof. Weiyou Yang, Enyan Wang, Zhenxia Wang and Huilin Hou

      Version of Record online: 8 NOV 2017 | DOI: 10.1002/celc.201700993

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      Time to split: The efficient photoelectrocatalysis of WO3 mesoporous nanobelts is explored, demonstrating enhanced photoelectrochemical activity for water splitting.

    3. Cobalt−Iron Pyrophosphate Porous Nanosheets as Highly Active Electrocatalysts for the Oxygen Evolution Reaction

      Miaomiao Liu, Zhengyi Qu, Deqin Yin, Xiaojuan Chen, Yajie Zhang, Prof. Yong Guo and Prof. Dan Xiao

      Version of Record online: 8 NOV 2017 | DOI: 10.1002/celc.201700956

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      Role play: Cobalt−iron pyrophosphate (Co−Fe-Pyro) is successfully synthesized by using a simple and convenient co-precipitation method. It exhibits an outstanding electrocatalytic activity for the oxygen evolution reaction (OER) in 1 M KOH. Orthophosphateand tripolyphosphate in cobalt and iron bimetallic systems are studied to reveal the effect of the anion in phosphate-based OER electrocatalysts.

    4. Composition-Dependent Effect of the Calcination of Cobalt-, Nickel-, and Gallium-Based Layered Double Hydroxides to Mixed Metal Oxides in the Oxygen Evolution Reaction

      Dr. Kalapu Chakrapani, Fatih Özcan, Dr. Klaus Friedel Ortega, Thomas Machowski and Prof.Dr. Malte Behrens

      Version of Record online: 7 NOV 2017 | DOI: 10.1002/celc.201700936

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      Split the difference: The optimal composition of mixed Co/Ni electrocatalysts for anodic water splitting depends on whether the material was calcined or not. Hydroxide precursors are more active if Co rich, whereas oxides are more active when Ni rich.

    5. In Situ Synthesis of Li2S-Loaded amphiphilic Porous Carbon and Modification of the Li2S Electrode for Long-Life Li2S Batteries

      Can Wang, Wenlong Cai, Gaoran Li, Prof. Binhong Liu and Prof. Zhoupeng Li

      Version of Record online: 7 NOV 2017 | DOI: 10.1002/celc.201700914

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      Serve and protect: A one-pot synthesis route of Li2S-loaded amphiphilic porous carbon is presented for high-performance Li2S batteries. Sulfur blending in the Li2S electrode significantly improves the electrode activation. The S-blended Li2S electrode modified with a protective layer composed of polyethylene oxide and polybenzimidazole demonstrates excellent cyclability.

    6. Very Important Paper

      Restoration of Degraded Nickel-Rich Cathode Materials for Long-Life Lithium-Ion Batteries

      Dr. Naiteng Wu, Prof. Hao Wu, Prof. Jang-Kyo Kim, Prof. Xianming Liu and Prof. Yun Zhang

      Version of Record online: 7 NOV 2017 | DOI: 10.1002/celc.201700979

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      Back in action: A targeted solvothermal followed by re-oxidation approach is presented to restore the structural stability and electrochemical performances of degraded nickel-rich layered cathode materials. The restored LiNi0.8Co0.15Al0.05O2 can retain 82 % initial capacity after 200 cycles under 1 C at room temperature, and 87 % and 55 % initial capacities after 100 and 500 cycles, respectively, under 1 C at 55 °C.

  11. Communications

    1. Very Important Paper

      Hybrids from the π−π Stacking of Graphene Oxide and Aromatic Sulfonic Compounds for Improved Proton Conductivity

      Yuta Shudo, Mohammad Razaul Karim, Ryo Ohtani, Masaaki Nakamura and Prof. Dr. Shinya Hayami

      Version of Record online: 7 NOV 2017 | DOI: 10.1002/celc.201701026

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      π in the sky: π-π stacking of graphene oxide with a series of aromatic sulfonic compounds is found to increase both the water adsorbing capacity and interlayer flexibility of the resultant hybrids. The hybrids are formed without the formation of any chemical bond and reveal excellent proton conductivity value.

  12. Articles

    1. Multifunctional Separator with Porous Carbon/Multi-Walled Carbon Nanotube Coating for Advanced Lithium−Sulfur Batteries

      Dr. Lei Tan, Prof. Xinhai Li, Prof. Zhixing Wang, Prof. Huajun Guo, Prof. Jiexi Wang and Dr. Liang An

      Version of Record online: 6 NOV 2017 | DOI: 10.1002/celc.201700986

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      Divide and conquer: A porous carbon (PC) with a high specific surface area and large pore volume, prepared from an abundant industrial byproduct (coal tar pitch, CTP), is composited with multi-walled carbon nanotubes (MWCNTs) through a heat-treatment method. The PC/MWCNT composite is deposited onto one side of a polypropylene (PP) separator by using a slurry coating method. The modified separator is then applied in Li−S batteries with promising results.

    2. Facile and Controllable One-Pot Synthesis of Hierarchical Co9S8 Hollow Microspheres as High-Performance Electroactive Materials for Energy Storage and Conversion

      Prof. Tsung-Wu Lin, Hong-Chi Tsai, Ting-Yu Chen and Prof. Li–Dong Shao

      Version of Record online: 6 NOV 2017 | DOI: 10.1002/celc.201700886

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      Just a spoonful of sugar: Hierarchical Co9S8 hollow microspheres with nanosheet building units are synthesized via a one-step hydrothermal method. This composite serves as not only the highly capacitive electrode material for supercapacitors but also as a highly active electrocatalyst toward the oxygen evolution reaction.

    3. A Highly Efficient Electrocatalyst Derived from Polyaniline@CNTs−SPS for the Oxygen Reduction Reaction

      Jingjing Xu, Shiyao Lu, Han Zhou, Xu Chen, Yuankun Wang, Chunhui Xiao and Prof. Shujiang Ding

      Version of Record online: 3 NOV 2017 | DOI: 10.1002/celc.201700735

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      Cats. got potential: A highly active nitrogen-doped carbon is reported with uniform hierarchical structure through sulfonated polystyrene (SPS), which regulates the distribution of PANI covering the carbon nanotubes (CNTs). The electrocatalyst shows outstanding performance towards the oxygen reduction reaction in alkaline media. The optimized nitrogen-doped CNTs exhibit an onset potential of 0.94 V (vs. RHE) and half-wave potential of 0.83 V in 0.1 M KOH. Furthermore, the as-prepared catalyst shows superior durability and methanol tolerance compared to the commercial Pt/C, suggesting promising applications in fuel cells and metal−air batteries.

    4. Kinetics and Structural Investigation of Layered Li9V3(P2O7)3(PO4)2 as a Cathode Material for Li-Ion Batteries

      Prasanth Balasubramanian, Dr. Marilena Mancini, Dr. Holger Geßwein, Dr. Dorin Geiger, Dr. Peter Axmann, Prof. Dr. Ute Kaiser and Dr. Margret Wohlfahrt-Mehrens

      Version of Record online: 3 NOV 2017 | DOI: 10.1002/celc.201700734

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      Working environment: The influence of crystallite size on the electrode kinetics of the high-voltage Li9V3(P2O7)3(PO4)2 cathode is investigated. The structural transformations at high voltages and their reversibility are studied by means of in situ and ex situ analysis. The influence of structural changes on the electrochemical behavior is investigated under different working conditions.

    5. Electrochemical Faradaic Spectroscopy

      Dr. Dijana Jadreško, Dr. Dariusz Guziejewski and Prof. Dr. Valentin Mirčeski

      Version of Record online: 3 NOV 2017 | DOI: 10.1002/celc.201700784

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      Double benefits: An approach for the kinetic characterization of electrode processes by analyzing the response in a time domain, electrochemical faradaic spectroscopy, is presented. The technique (see picture) is placed in between classical chronoamperometric experiments and advanced square-wave voltammetry and gain advantages from both methods. Both theoretical consideration as well as experimental verification of the newly appointed method are reported.

    6. Continuous Flow Synthesis of Platinum Nanoparticles in Porous Carbon as Durable and Methanol-Tolerant Electrocatalysts for the Oxygen Reduction Reaction

      Dr. Carlota Domínguez, Dr. Kevin M. Metz, Md. Khairul Hoque, Michelle P. Browne, Dr. Leticia Esteban-Tejeda, Corbin K. Livingston, Dr. Suoyuan Lian, Dr. Tatiana S. Perova and Dr. Paula E. Colavita

      Version of Record online: 3 NOV 2017 | DOI: 10.1002/celc.201700998

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      Go with the flow: An effective and scalable continuous flow route for the synthesis of platinum nanoparticles embedded in carbon porous spheres is reported. This method yields oxygen reduction reaction (ORR) catalysts for fuel cells with low Pt content, high durability and high methanol tolerance.

    7. Fructose Dehydrogenase Electron Transfer Pathway in Bioelectrocatalytic Reactions

      Michal Kizling and Prof. Renata Bilewicz

      Version of Record online: 3 NOV 2017 | DOI: 10.1002/celc.201700861

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      Sweet as sugar: Kinetic and mechanistic studies are presented for fructose oxidation by fructose dehydrogenase (FDH) using the electrochemical methods of stationary and rotating disk voltammetry. Two different systems were evaluated considering direct electron transfer and using a mediator with suitable formal potential.

    8. Electrochemical Behaviour of Lithium, Sodium and Potassium Ion Electrolytes in a Na0.33V2O5 Symmetric Pseudocapacitor with High Performance and High Cyclic Stability

      Ramu Manikandan, Dr. C. Justin Raj, Murugesan Rajesh, Dr. Byung Chul Kim, Ju Yong Sim and Prof. Kook Hyun Yu

      Version of Record online: 2 NOV 2017 | DOI: 10.1002/celc.201700923

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      On balance: A symmetric supercapacitor was fabricated utilizing Na0.33V2O5 nanorods and its performance was studied in Li+, Na+ and K+ cation based aqueous electrolytes. The Na0.33V2O5 symmetric supercapacitor showed better electrochemical performance with excellent cyclic stability for 50 000 charge/discharge cycles in all three electrolytes.

    9. On the Kinetic and Thermodynamic Properties of Aryl Radicals Using Electrochemical and Theoretical Approaches

      Dr. Line Koefoed, Dr. Karina H. Vase, Dr. Joakim H. Stenlid, Prof. Tore Brinck, Dr. Yuichi Yoshimura, Prof. Henning Lund, Dr. Steen U. Pedersen and Prof. Kim Daasbjerg

      Version of Record online: 26 OCT 2017 | DOI: 10.1002/celc.201700772

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      A radical solution: Using sampled-current voltammetry on a series of aryl radicals, it is shown that the substituent effect on the reduction potential of aryl radicals (−0.87±0.03 V vs. SCE) is small. This can be explained by the σ nature of the aryl radicals and corresponding anions as evidenced from density functional calculations.

    10. Na-Doped C70 Fullerene/N-Doped Graphene/Fe-Based Quantum Dot Nanocomposites for Sodium-Ion Batteries with Ultrahigh Coulombic Efficiency

      Chunlian Wang, Dr. Yang Zhang, Prof. Wen He, Prof. Xudong Zhang, Prof. Guihua Yang, Zhaoyang Wang, Prof. Manman Ren and Prof. Lianzhou Wang

      Version of Record online: 24 OCT 2017 | DOI: 10.1002/celc.201700899

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      Off the batt.: Fe-based quantum dots are anchored onto a hybrid carbon structure of Na-C70 and nitrogen-doped graphene through a simple in situ synthesis method. The nanocomposites are used as sodium-ion battery anodes and can achieve the high discharge capacities, which are significantly better than those of lithium-ion batteries. This study offers a new way for rational utilization of waste biomass in high-efficiency energy storage and transformation materials.

    11. Influence of the Composition and Preparation of the Rotating Disk Electrode on the Performance of Mesoporous Electrocatalysts in the Alkaline Oxygen Reduction Reaction

      Dr. Nick Daems, Prof. Dr. Tom Breugelmans, Prof. Dr. Ivo F. J. Vankelecom and Prof. Dr. Paolo P. Pescarmona

      Version of Record online: 24 OCT 2017 | DOI: 10.1002/celc.201700907

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      Underestimated impact: The influence of the electrocatalyst loading and of the binder type and content on the oxygen reduction reaction performance of doped ordered mesoporous electrocatalysts is investigated and shown to have a relevant impact on product selectivity and kinetic current density (see picture).

    12. Synergistic Doping for Pseudocapacitance Sites in Alkaline Carbon Supercapacitors

      Mei Ni, Zhenghong Huang, Yimeng Lian, Renjie Chen, Xiaoling Zhang, Hailiang Nie and Dr. Wen Yang

      Version of Record online: 23 OCT 2017 | DOI: 10.1002/celc.201700972

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      Facial expression: Pseudocapacitance sites in alkaline carbon supercapacitors produced by doping are identified by using near-edge X-ray absorption fine structure spectroscopy. The generated higher density of states near the Fermi level is detected by using ultraviolet photoelectron spectroscopy, which can improve the interfacial capacitance.

  13. Communications

    1. Bilayer Vesicles as a Noncovalent Immobilization Platform of Electrocatalysts for Energy Conversion in Neutral Aqueous Media

      Dr. Min-Wen Chung, Dr. Yu-Chiao Liu, Dr. Tao-Hung Yen and Prof. Dr. Ming-Hsi Chiang

      Version of Record online: 23 OCT 2017 | DOI: 10.1002/celc.201701051

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      Electrocatalyst carriers: Water-insoluble electrocatalysts upon liposome embedment can be easily deployed for energy conversion in neutral aqueous solution without complicated structural modification.

  14. Articles

    1. Use of Bayesian Inference for Parameter Recovery in DC and AC Voltammetry

      Prof. David J. Gavaghan, Dr. Jonathan Cooper, Aidan C. Daly, Dr. Christopher Gill, Dr. Kathryn Gillow, Dr. Martin Robinson, Dr. Alexandr N. Simonov, Dr. Jie Zhang and Prof. Alan M. Bond

      Version of Record online: 19 OCT 2017 | DOI: 10.1002/celc.201700678

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      Bayesian inference is shown to be a powerful technique for assessing the information content of voltammetric experiments. The approach yields distributions of parameter values and hence estimates of the accuracy of recovered parameters. AC voltammetry is shown to yield parameters with much greater accuracy than its DC counterpart.

    2. Effect of Air-Aging on the Electrochemical Characteristics of TiOxCy Films for Electrocatalysis Applications

      Celine Rüdiger, Dr. Carlos Valero-Vidal, Dr. Marco Favaro, Dr. Stefano Agnoli, Dr. Gaetano Granozzi and Dr. Julia Kunze-Liebhäuser

      Version of Record online: 19 OCT 2017 | DOI: 10.1002/celc.201700912

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      Coming of age: TiOxCy electrodes undergo surface oxidation to TiO2 during air exposure, which has an important impact on their interfacial conductivity and corrosion kinetics in acidic electrolyte.

    3. Successive Conditioning in Complex Artificial Wastewater Increases the Performance of Electrochemically Active Biofilms Treating Real Wastewater

      Sebastian Riedl, Robert Keith Brown, Sarah Klöckner, Dr. Katharina J. Huber, Dr. Boyke Bunk, Prof. Jörg Overmann and Prof. Dr. Uwe Schröder

      Version of Record online: 19 OCT 2017 | DOI: 10.1002/celc.201700929

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      Squeaky clean: A multi-carbon-source artificial wastewater consisting of several carbon sources, which represent typical fermentation and hydrolysis products derived from the otherwise myriad wastewater constituents, was developed as a realistic wastewater simulation and was used to cultivate high-performance electroactive biofilms.

    4. Boosting the Specific Surface Area of Hierarchical Porous Carbon Aerogel through the Multiple Roles of the Catalyst for High-Performance Supercapacitors

      Feng Li, Lijing Xie, Guohua Sun, Fangyuan Su, Qingqiang Kong, Qian Li, Yuguang Chao, Xiangyun Guo and Prof. Chengmeng Chen

      Version of Record online: 19 OCT 2017 | DOI: 10.1002/celc.201700880

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      Multitasking: A hierarchical porous carbon aerogel is successfully prepared through the polymerization of resorcinol and formaldehyde with K2CO3 as the catalyst, shape-directing agent, and in situ activator. CR3 possesses a ultrahigh specific surface areas of 4568.9 m2 g−1 and pore volume of 4.92 cm3 g−1. A CR3 assembled coin-type supercapacitor in EMIMBF4 delivers an ultrahigh energy density of 78.1 Wh kg−1 at a power density of 2.7 kW kg−1 as well as a high cycling stability with capacitance retention of 88 % after 8000 cycles.

    5. 3D-Printed Electrodes with Improved Mass Transport Properties

      Jonas Lölsberg, Ottokar Starck, Dr.-Ing. Serafin Stiefel, Dr. Jonas Hereijgers, Prof. Dr. Tom Breugelmans and Prof. Dr.-Ing. Matthias Wessling

      Version of Record online: 19 OCT 2017 | DOI: 10.1002/celc.201700662

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      Go with the flow: A new concept of additive manufactured flow through electrode mixers is presented. The electrode geometry combines a high surface area with mixing properties, diminishing concentration polarization effects of transport-limited reactions.

    6. Improving the Structural Stability of Li-Rich Layered Cathode Materials by Constructing an Antisite Defect Nanolayer through Polyanion Doping

      Leilei Ma, Lei Mao, Xiaofeng Zhao, Jianhao Lu, Fan Zhang, Pengchong Ding, Lizefang Chen and Prof. Fang Lian

      Version of Record online: 18 OCT 2017 | DOI: 10.1002/celc.201700913

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      Defect-perfect: Lithium-rich layered Li1.16(Ni0.25Mn0.75)0.84O2 oxide with an antisite-defect layer on the surface is prepared by boracic polyanion doping. The layer retards the drastic layered-to-spinel phase transition and eliminates the concomitant amorphous phase by decreasing the concentration of Li+ vacancies during high-voltage charging, which significantly improves the capacity retention and decreases the voltage decay.

    7. Electrochemical Conversion of Carbon Dioxide into CHO-Containing Compounds on Multimetallic Porphyrins

      Dr. Karla Calfumán, Dr. Jessica Honores, Dr. Diego Guzmán, Macarena Ohlbaum, Dr. Francisco Armijo, Dr. Rodrigo Del Río and Dr. Mauricio Isaacs

      Version of Record online: 18 OCT 2017 | DOI: 10.1002/celc.201700653

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      Two pillars of strength: The electrochemical reduction of CO2 in aqueous solution mediated by tetraruthenated metalloporphyrins (CoII and ZnII) in Nafion and polyvinyl chloride as a support is reported. The comparative aspects of the two polymeric matrices are expressed in terms of the electrocatalytic behavior toward carbon dioxide reduction of both sets of modified electrodes.

    8. In Situ Surface Coating of Squaric Acid with Conductive Polyaniline for a High-Capacity and Sustainable Lithium Battery Anode

      Arnab Ghosh and Prof. Sagar Mitra

      Version of Record online: 18 OCT 2017 | DOI: 10.1002/celc.201700866

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      Throw some shapes: As a sustainable alternative anode material in lithium batteries, polyaniline-coated squaric acid shows high specific capacity with unprecedented cycling stability. The polyaniline coating restricts the dissolution of active material into the electrolyte and improves the electronic conductivity of squaric acid.

    9. Bifunctional Electrocatalytic Behavior of Sodium Cobalt Phosphates in Alkaline Solution

      Ritambhara Gond, Krishnakanth Sada, Dr. Baskar Senthilkumar and Prof. Prabeer Barpanda

      Version of Record online: 18 OCT 2017 | DOI: 10.1002/celc.201700873

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      Taking on a new role: NaCoPO4 and Na2CoP2O7 show promising oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electrocatalytic activities, which demonstrate them to be bifunctional catalysts.

  15. Communications

    1. Hydrogen Production by Direct Lignin Electrolysis at Intermediate Temperatures

      Prof. Dr. Takashi Hibino, Kazuyo Kobayashi, Dr. Masahiro Nagao and Dr. Shinya Teranishi

      Version of Record online: 17 OCT 2017 | DOI: 10.1002/celc.201700917

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      Lignin was electrolyzed directly to hydrogen and carbon dioxide between 100 and 200 °C. In particular, addition of H3PO4-impregnated lignin to the anode of a PtFe/C||Pt/C cell operating at 150 °C enabled hydrogen production at an onset voltage of circa 0.25 V, offering the possibility of significant savings in the energy required for producing hydrogen.

  16. Articles

    1. Self-Assembled Porous NiFe2O4 Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

      Lina Qu, Prof. Xianhua Hou, Xiyan Huang, Qian Liang, Qiang Ru, Prof. Bo Wu and Kwok-ho Lam

      Version of Record online: 17 OCT 2017 | DOI: 10.1002/celc.201700862

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      Graphite flakes out: A simple and environmentally friendly hydrothermal method is used to synthesize anode materials composed of NiFe2O4 (NFO) and ultrathin flake graphite (UFG). The optimized NFO/UFG-2 composite shows a stable long-term cycling performance with a high initial Coulombic efficiency of 83.4 % and a high specific capacity of 963.4 mAh g−1 after 300 cycles at a current density of 200 mA g−1.

    2. Nitrogen-Doped Hierarchical Porous Carbon Framework Derived from Waste Pig Nails for High-Performance Supercapacitors

      Yibei Zhou, Juan Ren, Li Xia, Huali Wu, Fengyu Xie, Qiaoji Zheng, Chenggang Xu and Prof. Dr. Dunmin Lin

      Version of Record online: 17 OCT 2017 | DOI: 10.1002/celc.201700810

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      Nailed it: Waste pig nails can act as low-cost, and renewable carbon precursors for a high-performance supercapacitor that possesses a high specific capacitance of 231 F g−1 at 1 A g−1, and superior retention of 98 % after 5000 cycles at 1 A g−1 in 6 M KOH electrolyte.

  17. Communications

    1. On the Mechanism of Scanning Electrochemical Potential Microscopy

      Dr. Jochen Friedl, Dr. Jingying Gu, Prof. Ulrich Stimming and Dr. Benjamin R. Horrocks

      Version of Record online: 16 OCT 2017 | DOI: 10.1002/celc.201701031

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      Current state of affairs: A mechanism for scanning electrochemical potential microscopy (SECPM) is proposed based on the interplay between faradaic, tunneling, and amplifier input currents. The theory describes the shape of experimental approach curves and explains the unexpected high spatial resolution of SECPM. The technique can achieve atomic resolution in cases where it is operating as operate as an extremely low current form of scanning tunneling microscopy.

  18. Articles

    1. Templated Synthesis of Nickel−Iron Layered Double Hydroxide for Enhanced Electrocatalytic Water Oxidation: Towards the Development of Non-Precious-Metal Catalysts

      Dharmendra Kumar Yadav, Dr. Vellaichamy Ganesan, Piyush Kumar Sonkar and Rupali Gupta

      Version of Record online: 13 OCT 2017 | DOI: 10.1002/celc.201700867

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      Keeping it simple: A new and simple route for the synthesis of Ni−Fe layered double hydroxide by using a metal−organic framework (specifically Fe-MIL-88) as a template is elucidated. This material demonstrates excellent water oxidization ability and outperforms conventional catalysts based on Pt and Ir metals. It exhibits high catalytic efficiency and long durability for water oxidation.

    2. Elucidation of the Reaction Behavior of Silicon Negative Electrodes in a Bis(fluorosulfonyl)amide-Based Ionic Liquid Electrolyte

      Kazuki Yamaguchi, Dr. Yasuhiro Domi, Dr. Hiroyuki Usui and Prof. Hiroki Sakaguchi

      Version of Record online: 13 OCT 2017 | DOI: 10.1002/celc.201700724

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      Si goes it alone: The thickness of an electrode composed of Si alone was found to increase with the cycle number, with the increase in thickness less noticeable in an bis(fluorosulfonyl)amide (FSA)-based electrolyte than in an organic electrolyte. Li−K emission was observed at all SXES measured points, which means that the lithiation reaction proceeded uniformly in the Si layer.

  19. Communications

    1. Directed Growth of a Bimetallic MOF Membrane and the Derived NiCo Alloy@C/NixCo1-xO/Ni Foam Composite as an Efficient Electrocatalyst for the Oxygen Evolution Reaction

      Dan Ping, Xiao Feng, Jun Zhang, Jianming Geng and Prof. Xinfa Dong

      Version of Record online: 12 OCT 2017 | DOI: 10.1002/celc.201700901

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      Powered by carbon: A NiCo alloy@C/NixCo1-xO/NF hierarchical nanocomposite fabricated from carbonization of the bimetallic NiCo-MOF/NiCoLDH/NF template showed excellent electrocatalytic activity for the oxygen evolution reaction. Specifically, it exhibited a very low overpotential of 300 mV at a current density of 100 mA cm−2. LDH=layered double hydroxide, NF=Ni foam, MOF=metal−organic framework.

  20. Articles

    1. Structural-Defect-Controlled Electrochemical Performance of Sodium Ion Batteries with NaCrO2 Cathodes

      Dr. Monica Sawicki, Prof. Angel L. Ortiz, Mei Luo and Prof. Leon L. Shaw

      Version of Record online: 12 OCT 2017 | DOI: 10.1002/celc.201700764

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      The cycle stability of NaCrO2 half cells depends strongly on structural defects in the NaCrO2 crystal which is shown to be controllable through high-energy ball milling (BM) before and after the high-temperature synthesis reaction. The near-perfect NaCrO2 crystal derived from the process with high-energy BM of reactants before the synthesis reaction (i. e., the BM-Before cell) exhibits the highest specific capacity and best capacity retention.

    2. Bending Monolayer Artificial Muscle

      Prof. Toribio F. Otero and Dr. Laura Valero

      Version of Record online: 10 OCT 2017 | DOI: 10.1002/celc.201700713

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      Muscle building: A bending monolayer artificial muscle is presented and characterized, giving the highest coulo-dynamic efficiency described for artificial muscles.

    3. Specific Ion Effects on the Mediated Oxidation of NADH

      Cristina Carucci, Prof. Andrea Salis and Prof. Edmond Magner

      Version of Record online: 10 OCT 2017 | DOI: 10.1002/celc.201700672

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    4. Controlled Fabrication of Interconnected Porous Carbon Nanosheets for Supercapacitors with a Long Cycle Life

      Nannan Chen, Prof. Kongjun Ma, Prof. Zhengyu Bai, Prof. Hongyu Mi, Zhiwei Li, Prof. Qing Zhang and Prof. Jieshan Qiu

      Version of Record online: 5 OCT 2017 | DOI: 10.1002/celc.201700801

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      Connect the dots: A relatively low-cost and eco-friendly ternary precursor system was rationally designed for the development of interconnected porous carbon nanosheets with excellent cyclability for supercapacitors.

    5. High-Stability Electrodes for High-Temperature Proton Exchange Membrane Fuel Cells by Using Advanced Nanocarbonaceous Materials

      Dr. Héctor Zamora, Jorge Plaza, Prof. Pablo Cañizares, Dr. Manuel A. Rodrigo and Justo Lobato

      Version of Record online: 5 OCT 2017 | DOI: 10.1002/celc.201700699

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      Steady as a rock: Carbon nanospheres in the MPL and carbon nanofibers as catalyst supports have been used in electrodes for polybenzimidazole-based high-temperature proton exchange membrane fuel cells (HT-PEMFC). The fuel cell tests have demonstrated a very high stability of the membrane−electrode assemblies prepared with those advanced carbonaceous materials.

    6. Porous Carbon/rGO Composite: An Ideal Support Material of Highly Efficient Palladium Electrocatalysts for the Formic Acid Oxidation Reaction

      Hassan Ali, Shahid Zaman, Imran Majeed, Dr. Fehmida K. Kanodarwala, Dr. Muhammad Amtiaz Nadeem, Prof. John Arron Stride and Dr. Muhammad Arif Nadeem

      Version of Record online: 4 OCT 2017 | DOI: 10.1002/celc.201700879

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      Somebody to lean on: A composite of reduced graphene oxide (rGO) and porous carbon (PC) was fabricated as a support material for a Pd-supported electrocatalyst for the formic acid oxidation reaction. The obtained mass specific activity for Pd/rGO1-C1 (969.76 mA mg−1) is 1.52 times higher than for Pd/rGO (639.5 mA mg−1) and 2.63 times higher than Pd/C (368.73 mA mg−1) synthesized under the same conditions and at given onset peak potentials.

    7. Very Important Paper

      A Potentiostatic/Galvanostatic Study and Theoretical Description of Polypyrrole Film Electrodes: A Model of the Intracellular Matrix of Ectothermic Muscle Cells

      Samuel Beaumont and Prof. Dr. Toribio F. Otero

      Version of Record online: 2 OCT 2017 | DOI: 10.1002/celc.201700915

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      Cold-blooded creatures: Polypyrrole reactions in aqueous solutions drive molecular (polymeric) electrochemical machines mimicking the muscle sarcomere. They sense through the material potential and the reaction energy adapts to the ambient thermal energy. The theoretical description provides hints as to how muscles from ectotherms work and sense temperature.

    8. Electrochemical Evaluation of Titanocenes in Ionic Liquids with Non-coordinating and Coordinating Anions and Application for NH3 Synthesis

      Akira Katayama, Prof. Tomohiko Inomata, Prof. Tomohiro Ozawa and Prof. Hideki Masuda

      Version of Record online: 26 SEP 2017 | DOI: 10.1002/celc.201700557

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      The latest convert: UV-vis/NIR spectra recorded during an electrochemical reduction of [Cp2TiCl2] reveals that it was converted to [(Cp2TiCl)2] in ionic liquid (IL) through the formation of [Cp2TiCl]. The electrochemical NH3 syntheses by using [Cp2TiCl2] in IL are also demonstrated in a solid polymer electrolyte cell, which produce NH3. The yields of NH3 in a non-coordinating IL are higher than that in a coordinating IL.

    9. Ag-Nanoparticle-Anchored rGO-Coated MIL-88B(Fe) Hybrids as Robust Electrocatalysts for the Highly Efficient Oxygen Evolution Reaction at Neutral pH

      Dewan Azharul Islam, Koushik Barman, Prof. Sk Jasimuddin and Prof. Himadri Acharya

      Version of Record online: 25 SEP 2017 | DOI: 10.1002/celc.201700883

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      Extended cat.lifetime: A robust water oxidation catalyst, a Ag-nanoparticle-anchored rGO-coated MIL-88B(Fe) hybrid, exhibits remarkable oxygen evolution activity at neutral pH. The designed electrolyzer shows sustained water oxidation with a high current density (1 mA cm−2) at very low overpotential (ca. 395 mV) and an extended lifetime, maintaining the catalyst integrity.

    10. Cobalt Diselenide Nanorods Grafted on Graphitic Carbon Nitride: A Synergistic Catalyst for Oxygen Reactions in Rechargeable Li−O2 Batteries

      Dr. Surender Kumar, Dr. Anirudha Jena, Yao Chong Hu, Dr. Chaolun Liang, Prof. Wuzong Zhou, Dr. Tai Feng Hung, Dr. Wen Sheng Chang, Prof. Ho Chang and Prof. Ru Shi Liu

      Version of Record online: 25 SEP 2017 | DOI: 10.1002/celc.201700909

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      Pore-fection: The composite of g-C3N4 with CoSe2 provides a new class of material as a bifunctional catalyst for oxygen reactions in Li−O2 batteries. A reduction of the overpotential can be ascribed to the synergistic catalysis by both components, as shown in the picture. The presence of g-C3N4 facilitates electron transfer, which can free-up clogged pores of the electrode material from oxygen reactions.

    11. Crystal Structure Modification Enhanced FeNb11O29 Anodes for Lithium-Ion Batteries

      Xiaoming Lou, Prof. Chunfu Lin, Dr. Qiang Luo, Jinbo Zhao, Bin Wang, Prof. Jianbao Li, Prof. Qian Shao, Prof. Xingkui Guo, Prof. Ning Wang and Prof. Zhanhu Guo

      Version of Record online: 20 SEP 2017 | DOI: 10.1002/celc.201700816

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      Driving success: Oxygen-deficient FeNb11O29 exhibits superior properties in terms of increased electronic conductivity, enhanced Li+-ion diffusion coefficient, significant pseudocapacitive behavior, high reversible capacity, safe working potential, advanced first-cycle coulombic efficiency, outstanding rate capability, and good cyclic stability. Therefore, it may be a promising anode material for high-performance lithium-ion batteries in electric vehicles.

  21. Essays

    1. Moïse Haïssinsky: The Discoverer of Underpotential Deposition

      Prof. Dr. Fritz Scholz and Prof. Dr. Ezequiel P. M. Leiva

      Version of Record online: 20 SEP 2017 | DOI: 10.1002/celc.201700770

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      Lest we forget: Moïse Haïssinsky played a key role in discovering underpotential deposition (upd). This Essay reviews his contributions to electrochemistry, and the early history of upd.

  22. Articles

    1. Photoelectrochemical Oxidation of Benzylic Alcohol Derivatives on BiVO4/WO3 under Visible Light Irradiation

      Hiroyuki Tateno, Yugo Miseki and Prof. Kazuhiro Sayama

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700710

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      Photo finish: The photo-assisted electrochemical oxidation of benzylic alcohol derivatives is achieved with excellent yields at a low applied potential under visible light irradiation by using a BiVO4/WO3 photoelectrode. The prepared BiVO4/WO3 photoelectrode is stable, and the turnover number of products to BiVO4 is approximately 1200.

    2. Microbial Desalination Cells with Efficient Platinum-Group-Metal-Free Cathode Catalysts

      Dr. Carlo Santoro, Morteza Rezaei Talarposhti, Mounika Kodali, Dr. Rohan Gokhale, Dr. Alexey Serov, Dr. Irene Merino-Jimenez, Prof. Ioannis Ieropoulos and Prof. Plamen Atanassov

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700626

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      Back to the chamber: An iron-based platinum-group-metal-free (PGM-free) catalyst for the oxygen reduction reaction is tested in a rotating ring disk electrode and in a microbial desalination cell. The recorded power densities are much higher compared to Pt and activated carbon.

    3. Bioelectrocatalysis of Sulfite Dehydrogenase from Sinorhizobium meliloti with Its Physiological Cytochrome Electron Partner

      Dr. Palraj Kalimuthu, Ju-Chun Hsiao, Remya Purushothaman Nair, Prof. Ulrike Kappler and Prof. Paul V. Bernhardt

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700838

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      SorT it out: Electrochemically driven catalysis of a Mo-dependent bacterial sulfite dehydrogenase (SorT) is achieved with its physiological electron acceptor, a c-type cytochrome (SorU), acting as a mediator of electron transfer at a chemically modified Au working electrode. Inter-protein electron transfer is examined by comparing the wild-type SorT with a selection of variant forms.

    4. A High-Energy Aqueous Sodium-Ion Capacitor with Nickel Hexacyanoferrate and Graphene Electrodes

      Dr. Karthikeyan Krishnamoorthy, Parthiban Pazhamalai, Surjit Sahoo, Dr. Jong Hwan Lim, Dr. Kyung Hyun Choi and Dr. Sang Jae Kim

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700690

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      Under construction: An aqueous sodium-ion hybrid capacitor using nickel hexacyanoferrate and graphene electrodes is constructed and the electrochemical performances are examined with neutral electrolyte.

    5. Needle-like NiCo2O4 Coated on Graphene Foam as a Flexible Cathode for Lithium-Oxygen Batteries

      Yuexing Jiang, Lu Zou, Junfang Cheng, Yizhen Huang, Lichao Jia, Bo Chi, Jian Pu and Jian Li

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700864

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      To the point: Needle-like NiCo2O4 is grown in situ on graphene foam with a 3D macropore structure as a free-standing cathode for lithium−air batteries. This can deliver a reversible capacity of 1000 mAh g−1 for at least 80 cycles without obvious degradation.

    6. Highly Ordered, Ultralong Mn-Based Nanowire Films with Low Contact Resistance as Freestanding Electrodes for Flexible Supercapacitors with Enhanced Performance

      Dr. Junli Zhou, Prof. Lin Yu, Prof. Yulin Deng, Prof. Yin Yang, Prof. Zhifeng Hao and Prof. Ming Sun

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700819

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      Call to order: Highly ordered thin-film electrode materials based on ultralong MNW/PANI coaxial nanowires (NWs) (ca. 200 μm in length) are designed through a water/oil two-phase interface. The ultralong MNW/PANI NWs with highly ordered orientation could provide longer and continuous charge transportation pathways for the electrons compared to disordered NWs, and greatly reduce the inter-junction resistance between NWs in a film to achieve high capacitance.

    7. Multistage Li1.2Ni0.2Mn0.6O2 Micro-architecture towards High-Performance Cathode Materials for Lithium-Ion Batteries

      Wei He, Hongfei Zheng, Xiaokang Ju, Shengyang Li, Yating Ma, Dr. Qingshui Xie, Dr. Laisen Wang, Dr. Baihua Qu and Prof. Dong-Liang Peng

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700727

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      Levels of complexity: The Li1.2Ni0.2Mn0.6O2 micro-/nano-architecture retains a fairly high discharge capacity of approximately 180 mAh g−1 after 180 cycles at the 2C rate (1C=200 mA g−1). Even after a 50-fold (5C/0.1C) increase, a discharge capacity 61.4 % (153.8 mAh g−1) of the capacity at 0.1C (ca. 249.1 mAh g−1) can still be retained, showing excellent rate performances and stability.

    8. Support Interaction Effect of Platinum Nanoparticles on Non-, Y-, Ce-Doped Anatase and Its Implication on the ORR in Acid and Alkaline Media

      Dr. Luis Alberto Estudillo-Wong, Dr. Guadalupe Ramos-Sanchez, Dr. Laura Calvillo, Prof. Gaetano Granozzi and Prof. Nicolas Alonso-Vante

      Version of Record online: 19 SEP 2017 | DOI: 10.1002/celc.201700715

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      Moral support: The significant stability of platinum atoms coordinated onto non-doped and doped metal-oxide centers is demonstrated in acid and alkaline media.

    9. Microemulsion Concentration in Preparation of LiMn2O4 Submicron Spherical Particles as Cathode Materials for Highly Reversible Lithium-Ion Batteries

      Weijie Zhu, Zhongpei Lu, Xiaojun Lu, Fan Yin, Weili Li, Hongmei Ji and Gang Yang

      Version of Record online: 18 SEP 2017 | DOI: 10.1002/celc.201700785

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      Porous LiMn2O4 (LMO) microspheres composed of numerous primary nanoparticles are synthesized by microemulsion and co-precipitation methods. The well-established porous structure of LMO with abundant ionic channels and good contact with electrolyte endow the spinel a remarkable electrochemical performance.

    10. You have free access to this content
      Rhombic Dodecahedron ZIF-8 Precursor: Designing Porous N-Doped Carbon for Sodium-Ion Batteries

      Yang Liu, Gangya Wei, Liudi Pan, Mingyan Xiong, Honglin Yan, Yuxi Li, Cong Lu and Dr. Yun Qiao

      Version of Record online: 14 SEP 2017 | DOI: 10.1002/celc.201700748

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      Off the grid: Rhombic dodecahedral N-doped carbon with a porous structure is obtained by using ZIF-8. A Prussian blue//ZIF-derived carbon sodium-ion full battery is built, which demonstrates a stable discharge capacity of 76 mA h g−1 after 50 cycles at a current density of 0.1 A g−1. ZIF could be a promising and outstanding candidate to design functional carbon for sodium-ion batteries in grid storage.

    11. Conducting Organic Polymer Electrodes with Embedded Polyoxometalate Catalysts for Water Splitting

      Marta Blasco-Ahicart, Dr. Joaquin Soriano-López and Prof. Dr. Jose Ramon Galán-Mascarós

      Version of Record online: 13 SEP 2017 | DOI: 10.1002/celc.201700696

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      Powered by plastic: Polyoxometalate-doped conducting organic polymers are viable easily processed plastic anodes for electrocatalytic water oxidation.

    12. Accessible 3D Integrative Paper Electrode Shapes: All-Carbon Dual-Ion Batteries with Optimum Packaging Performances

      Xiaoyuan Shi, Ting Deng, Prof. Bingsen Zhang, Prof. Wei Zhang, Lu Sui, He Yang, Dong Wang, Wen Shi, Prof. Cheng-Meng Chen and Prof. Weitao Zheng

      Version of Record online: 13 SEP 2017 | DOI: 10.1002/celc.201700752

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      Origami electrodes: A facile strategy of using carbon fiber paper (CFP) for packaging enhances the performance of dual-ion batteries. CFP provides a highly graphic layer for ion intercalation and amorphous carbon to buffer volume changes on its unique 3D structure. The integration of a current collector as one integrated electrode offers uniform conductivity and avoids material exfoliation and negative influence of binders.

    13. Exposed N and S Active Sites: An Indicator for Oxygen Reduction on Metal-Free Yam-Derived Porous Carbons

      Hao Fan, Zhen Dong and Prof. Jianshe Zhao

      Version of Record online: 13 SEP 2017 | DOI: 10.1002/celc.201700839

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      Potential candidate: A high-efficiency metal-free oxygen reduction electrocatalyst is developed by exposing intrinsic N and S active sites on yam-derived porous carbon (NSDC). The correlation between the oxygen reduction reaction (ORR) performance and the microstructure of the NSDC catalysts is established.

  23. Communications

    1. Tetrabutylammonium Fluoride as the Electrolyte in Aluminum Cells

      Jiaxin Fan, Yinhua Liu, Zhixiong Zhang, Aiye Wang, Li Li and Prof. Wenhui Yuan

      Version of Record online: 13 SEP 2017 | DOI: 10.1002/celc.201700617

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      It's Al good: Tetrabutylammonium fluoride (TBAF)-based electrolyte does not result in passivation on the aluminum surface. Al/CuO cells with TBAF-02ED electrolyte exhibit a well-defined initial open circuit voltage of 1.42 V, and a superior discharge specific capacity of 457 mAh g−1. Moreover, by utilizing anhydrous ionic liquid fluoride salts with a strong nucleophilic fluorinion as the electrolyte, the Al cells could sustain a high electrode potential without hydrogen evolution.

  24. Articles

    1. Sodium-Salt-Promoted Growth of Self-Supported Copper Oxides with Comparative Supercapacitive Properties

      Prof. Jun Song Chen, Song Peng Huang, Le Xu and Prof. Daniel John Blackwood

      Version of Record online: 12 SEP 2017 | DOI: 10.1002/celc.201700804

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      Hard to resist: A facile and inexpensive hydrothermal method is developed to synthesize self-supported copper oxide nanoarrays on a copper foam substrate by using different sodium salts. The anions contained in the salts and the salt concentration have great impact on the morphology of the samples. Three samples are prepared with unique structures: Cu2O nanoplatelets, nanocubes with a mixed phase of Cu2O and CuO, and irregular Cu2O crystals. When tested in supercapacitors, they demonstrate contrasting performance, owing to the difference in the diffusion resistance of the oxide films.

    2. Constrained Ab Initio Thermodynamics: Transferring the Concept of Surface Pourbaix Diagrams in Electrocatalysis to Electrode Materials in Lithium-Ion Batteries

      Dr. Kai S. Exner

      Version of Record online: 11 SEP 2017 | DOI: 10.1002/celc.201700754

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      From electrocatalysis to battery science: Surface Pourbaix diagrams that rely on a constrained ab initio thermodynamics approach provide deep insights into the thermodynamically stable surface of an electrocatalyst at different environmental parameters such as the applied electrode potential and pH. This concept is transferred from electrocatalysis to electrode materials in lithium-ion batteries and exemplified with a single-crystalline spinel lithium titanate (111) model electrode.

    3. Structurally Stable Mesoporous Hierarchical NiMoO4 Hollow Nanofibers for Asymmetric Supercapacitors with Enhanced Capacity and Improved Cycling Stability

      Venkata Sudheendra Budhiraju, Dr. Ashutosh Sharma and Assist. Prof. Sri Sivakumar

      Version of Record online: 7 SEP 2017 | DOI: 10.1002/celc.201700503

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      Hollow to the core: Four morphologies of NiMoO4 are synthesized by electrospinning: hollow nanofibers (NFs), porous NFs, solid NFs, and microplates. Amongst these, hollow NFs display the highest specific capacity and maximum cycling stability. An asymmetric supercapacitor fabricated with hollow NiMoO4 NF as the cathode and activated carbon as the anode displays a high specific capacity of 49 mAh g−1 at a current density of 1 A g−1 and a capacity retention of 97 % after 5000 cycles.

    4. Directing Nanostructure Formation of Gold through the In Situ Underpotential Deposition of a Secondary Metal for the Detection of Nitrite Ions

      Dr. Benchaporn Lertanantawong, Dr. Faegheh Hoshyargar and Prof. Anthony P. O'Mullane

      Version of Record online: 6 SEP 2017 | DOI: 10.1002/celc.201700707

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      Sense and sensibility: The underpotential deposition of copper and lead during the course of gold electrodeposition results in the formation of flower-like nanomaterials that are suitable as a sensing layer for the detection of nitrite ions.

    5. Cyclohexyl Bromide and Iodide: Direct Reduction at Vitreous Carbon Cathodes together with Nickel(I) Salen- and Cobalt(I) Salen-Catalyzed Reductions in Dimethylformamide

      Benjamin H. R. Gerroll, Sean P. Bird, Erin T. Martin, Prof. Mohammad S. Mubarak and Prof. Dennis G. Peters

      Version of Record online: 24 AUG 2017 | DOI: 10.1002/celc.201700664

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      Radical ideas: Direct electrochemical reduction of cyclohexyl bromide and cyclohexyl iodide at glassy carbon cathodes in dimethylformamide (DMF) containing 0.10 M tetramethyl-ammonium tetrafluoroborate (TMABF4) affords both free radical- and carbanion-derived products – cyclohexane, cyclohexene, and bicyclohexyl. Reduction of these halides with electrogenerated nickel(I) salen or cobalt(I) salen leads to free-radical-derived products (cyclohexane, cyclohexene, and bicyclohexyl) in different amounts.

  25. Communications

    1. Potential-Driven On/Off Switch Strategy for the Electrosynthesis of [7]Helicene-Derived Polymers

      Jan Hrbáč, Tomáš Strašák, Ladislav Fekete, Vít Ladányi, Jan Pokorný, Jiří Bulíř, Miloš Krbal, Jaroslav Žádný, Jan Storch and Jan Vacek

      Version of Record online: 17 AUG 2017 | DOI: 10.1002/celc.201700441

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      A joint effort: Polymers based on [7]helicene and thiophene are prepared. Conductive and non-conductive thin layers are synthesized electrochemically. Carbon and indium tin oxide substrates are used for polymer deposition. A joint experimental and computational approach is applied.

  26. Articles

    1. Voltammetric, Spectroscopic, and Microscopic Investigation of the Oxidation of Solid and Solution Phases of Tetrathiafulvalene (TTF) to (TTF)2MO4 (M=Mo, W)

      Dr. Shaimaa M. Ahmed, Prof. Alan M. Bond and Prof. Lisandra L. Martin

      Version of Record online: 15 AUG 2017 | DOI: 10.1002/celc.201700463

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      Unexplored territory: Synthesis, electrochemical, spectroscopic, and microscopic characterization of tetrathiafulvalene (TTF+) cation derivatives with molybdate and tungstate counter anions. The media dependent solubilities of TTF, TTF+ and the anions facilitate electrochemical solid-state transformation of TTF to (TTF)2MO4 (M=Mo, W) as well as their electrocrystallization preparations. Insights into the chemistry of the lowest nuclearity members of the polyoxometallate families with TTF+ are gleaned.

    2. Probing Electron Transfer in the Manganese-Oxide-Forming MnxEFG Protein Complex using Fourier Transformed AC Voltammetry: Understanding the Oxidative Priming Effect

      Dr. Lizhi Tao, Dr. Alexandr N. Simonov, Dr. Christine A. Romano, Dr. Cristina N. Butterfield, Prof. Dr. Bradley M. Tebo, Prof.Dr. Alan M. Bond, Prof.Dr. Leone Spiccia, Prof.Dr. Lisandra L. Martin and Prof.Dr. William H. Casey

      Version of Record online: 10 AUG 2017 | DOI: 10.1002/celc.201700563

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      Held accountable: The MnxEFG protein complex is responsible for the formation of manganese-oxide minerals in the environment. Mild oxidation of MnxEFG significantly enhances its enzymatic activity. The present study employs Fourier transformed ac voltammetry to demonstrate that this oxidative priming effect originates from facilitated internal electron transfer in the catalytic redox sites of the MnxEFG complex.

    3. Ionic Transport in Microhole Fluidic Diodes Based on Asymmetric Ionomer Film Deposits

      Dr. Klaus Mathwig, Dr. Barak D. B. Aaronson and Prof.Dr. Frank Marken

      Version of Record online: 10 AUG 2017 | DOI: 10.1002/celc.201700464

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      Caught on film: A functional explanation is developed for the rectification effect observed for asymmetric ionomer film deposits on a microhole. It is based on a change of conductivity of the diode, owing to accumulation or depletion of charge carriers in the microhole.

    4. Continuous Redirection and Separation of Microbeads by Faradaic Ion Concentration Polarization

      Collin D. Davies, Eunsoo Yoon and Prof. Richard M. Crooks

      Version of Record online: 30 JUN 2017 | DOI: 10.1002/celc.201700450

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      Insane with no membrane: Electrochemical reactions induced by a bipolar electrode result in a local ion depletion zone that controls the trajectory of charged particles traversing this zone. In other words, electrochemical processes result in efficient separation in the absence of a membrane.

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