Advanced Energy Materials

Cover image for Vol. 6 Issue 14

July 20, 2016

Volume 6, Issue 14

  1. Cover Picture

    1. Top of page
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    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Progress Reports
    7. Communications
    8. Full Papers
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      Solar Cells: Empowering Semi-Transparent Solar Cells with Thermal-Mirror Functionality (Adv. Energy Mater. 14/2016)

      Hoyeon Kim, Hui-Seon Kim, Jaewon Ha, Nam-Gyu Park and Seunghyup Yoo

      Version of Record online: 20 JUL 2016 | DOI: 10.1002/aenm.201670081

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      With ever-increasing demand for electrical energy consumption, semi-transparent solar cell (ST-SC) technology is desired to be integrated seamlessly onto the windows of buildings or vehicles. In article number 1502466, Nam-Gyu Park, Seunghyup Yoo, and co-workers demonstrate high-performance ST-SCs with excellent thermal-mirror functionality using methylammonium lead iodide perovskite photoactive layers and metal-based transparent electrode capped with high-index dielectric layers.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Progress Reports
    7. Communications
    8. Full Papers
    9. Frontispiece
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      Photocatalysts: Energy States of a Core-Shell Metal Oxide Photocatalyst Enabling Visible Light Absorption and Utilization in Solar-to-Fuel Conversion of Carbon Dioxide (Adv. Energy Mater. 14/2016)

      Dong Ki Lee, Ji Il Choi, Gyu Heon Lee, Yong-Hoon Kim and Jeung Ku Kang

      Version of Record online: 20 JUL 2016 | DOI: 10.1002/aenm.201670082

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      In article number 1600583, Yong-Hoon Kim, Jeung Ku Kang, and co-workers describe core-shell metal oxides with energy states enabling fast photo-catalytic electron-hole separation, where their shells are constructed to create the valence band maximum extending the photoactive spectrum for visible light absorption. These visible light sensitizing core-shell photocatalysts allow efficient solar-to-fuel conversion of carbon dioxide into value-added fuels such as methanol.

  3. Masthead

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  4. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Progress Reports
    7. Communications
    8. Full Papers
    9. Frontispiece
    10. Full Papers
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  5. Progress Reports

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    5. Contents
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    1. Liquid Metal Electrodes for Energy Storage Batteries

      Haomiao Li, Huayi Yin, Kangli Wang, Shijie Cheng, Kai Jiang and Donald R. Sadoway

      Version of Record online: 31 MAY 2016 | DOI: 10.1002/aenm.201600483

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      Liquid metal electrodes (LMEs) endow batteries with long lifetimes and other merits for energy storage applications. The state-of-the-art research progresses of LMEs in batteries are reviewed, including the LMEs for liquid metal batteries, sodium-sulfur and ZEBRA batteries, as well as the development of electrolytes for LMEs and the challenges/future prospects of using LMEs in energy storage batteries.

  6. Communications

    1. Top of page
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    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Progress Reports
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    1. Energy States of a Core-Shell Metal Oxide Photocatalyst Enabling Visible Light Absorption and Utilization in Solar-to-Fuel Conversion of Carbon Dioxide

      Dong Ki Lee, Ji Il Choi, Gyu Heon Lee, Yong-Hoon Kim and Jeung Ku Kang

      Version of Record online: 9 MAY 2016 | DOI: 10.1002/aenm.201600583

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      A core-shell metal oxide photocatalyst providing energy states for visible light absorption and efficient electron–hole separation has been reported and proven to be very efficient for solar-to-fuel conversion of carbon dioxide.

    2. Polyanthraquinone-Based Organic Cathode for High-Performance Rechargeable Magnesium-Ion Batteries

      Baofei Pan, Jinhua Huang, Zhenxing Feng, Li Zeng, Meinan He, Lu Zhang, John T. Vaughey, Michael J. Bedzyk, Paul Fenter, Zhengcheng Zhang, Anthony K. Burrell and Chen Liao

      Version of Record online: 9 MAY 2016 | DOI: 10.1002/aenm.201600140

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      Two anthraquinone-based polymers aiming at improving the capacity and voltage of magnesium ion batteries, were synthesized and characterized. The excellent battery cycling performance was demonstrated with the electrolyte consisting of magnesium bis(hexamethyldisilazide) and magnesium chloride.

    3. MoS2/TiO2 Edge-On Heterostructure for Efficient Photocatalytic Hydrogen Evolution

      Haiyong He, Junhao Lin, Wei Fu, Xingli Wang, Hong Wang, Qingsheng Zeng, Quan Gu, Yongmei Li, Cheng Yan, Beng Kang Tay, Can Xue, Xiao Hu, Sokrates T. Pantelides, Wu Zhou and Zheng Liu

      Version of Record online: 6 MAY 2016 | DOI: 10.1002/aenm.201600464

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      Via edge engineering, a facile two-step method is demonstrated that produces solid edge-on junctions between TiO2 and few-layered MoS2 in large scale. MoS2/TiO2 edge-on heterostructures result in high conductive MoS2/TiO2 interfaces and optimized electron transport pathways that facilitate the electron–hole pair separation, leading to an efficient solar water splitting.

    4. A Novel Dopant-Free Triphenylamine Based Molecular “Butterfly” Hole-Transport Material for Highly Efficient and Stable Perovskite Solar Cells

      Fei Zhang, Chenyi Yi, Peng Wei, Xiangdong Bi, Jingshan Luo, Gwénolé Jacopin, Shirong Wang, Xianggao Li, Yin Xiao, Shaik Mohammed Zakeeruddin and Michael Grätzel

      Version of Record online: 17 MAY 2016 | DOI: 10.1002/aenm.201600401

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      A triphenylamine based molecular “butterfly” is developed as dopant-free hole-transport material for perovskite solar cells exhibiting excellent power conversion efficiency of 16.3% which is comparable to the state-of-the-art doped 2,2′,7,7′-tetrakis(N,N′-di-p-methoxy-phenylamine)-9,9′-spirobifluorene (spiro-OMeTAD). Moreover, the device is much more stable than that of spiro-OMeTAD based device under light irradiation.

    5. A New Polythiophene Derivative for High Efficiency Polymer Solar Cells with PCE over 9%

      Qunping Fan, Wenyan Su, Xia Guo, Bing Guo, Wanbin Li, Youdi Zhang, Kun Wang, Maojie Zhang and Yongfang Li

      Version of Record online: 17 MAY 2016 | DOI: 10.1002/aenm.201600430

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      A new fluorinated polythiophene (PT) derivative, PBDD-ff4T, is designed and synthesized. The PBDD-ff4T/PC71BM-based device without any extra treatment exhibits a high efficiency of 9.2%, under the irradiation of AM 1.5G, 100 mW cm−2, which is the highest power conversion efficiency reported for PT derivative-based polymer solar cells.

    6. Laminated Cross-Linked Nanocellulose/Graphene Oxide Electrolyte for Flexible Rechargeable Zinc–Air Batteries

      Jing Zhang, Jing Fu, Xueping Song, Gaopeng Jiang, Hadis Zarrin, Pan Xu, Kecheng Li, Aiping Yu and Zhongwei Chen

      Version of Record online: 17 MAY 2016 | DOI: 10.1002/aenm.201600476

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      A solid-state hydroxide-conducting electrolyte with laminated structure based on functionalized graphene oxide and nanocellulose is demonstrated on a flexible, rechargeable zinc–air battery. Superior ionic conductivity, high water content, low anisotropic swelling degree, and excellent structural stability approve its promising application in advanced flexible, portable electrochemical energy conversion, and storage systems.

    7. Highly Efficient and Stable Solar Water Splitting at (Na)WO3 Photoanodes in Acidic Electrolyte Assisted by Non-Noble Metal Oxygen Evolution Catalyst

      Marta Sarnowska, Krzysztof Bienkowski, Piotr J. Barczuk, Renata Solarska and Jan Augustynski

      Version of Record online: 19 MAY 2016 | DOI: 10.1002/aenm.201600526

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      Keggin-type polyoxometalates, [PW12O40]3− and [PMo12O40]3−, are shown to act as highly effective oxygen evolution reaction molecular catalysts in photoelectrochemical water splitting devices. This is the first example of an oxidatively stable in acid media, non-noble metal, water splitting catalyst that allows an exceptionally high water oxidation photocurrent of 4.5 mA cm−2 at a (Na)WO3 photoanode to be achieved.

    8. Ultra-Thick, Low-Tortuosity, and Mesoporous Wood Carbon Anode for High-Performance Sodium-Ion Batteries

      Fei Shen, Wei Luo, Jiaqi Dai, Yonggang Yao, Mingwei Zhu, Emily Hitz, Yuefeng Tang, Yanfeng Chen, Vincent L. Sprenkle, Xiaolin Li and Liangbing Hu

      Version of Record online: 23 MAY 2016 | DOI: 10.1002/aenm.201600377

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      Pyrolysis of earth-abundant wood yields to ultra-thick, low-tortuosity, and mesoporous carbon anodes for sodium-ion batteries. Such a low-tortuosity and porous structure promotes electrolyte diffusion and provides fast transport channels for Na ions, which enables a high areal capacity.

  7. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Progress Reports
    7. Communications
    8. Full Papers
    9. Frontispiece
    10. Full Papers
    1. Empowering Semi-Transparent Solar Cells with Thermal-Mirror Functionality

      Hoyeon Kim, Hui-Seon Kim, Jaewon Ha, Nam-Gyu Park and Seunghyup Yoo

      Version of Record online: 27 APR 2016 | DOI: 10.1002/aenm.201502466

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      An efficiency of 13.3% with an outstanding total solar energy rejection ratio of 89.6% is realized in semi-transparent perovskite solar cells. With the optimal top electrode design leading to a selective transmittance in visible and high reflectance in the near-infrared region, the proposed see-through device demonstrates the noteworthy potential for ideal “energy-generating and heat-rejecting” solar windows that can make smart use of solar energy.

    2. Side-Chain Engineering for Enhancing the Properties of Small Molecule Solar Cells: A Trade-off Beyond Efficiency

      Jie Min, Chaohua Cui, Thomas Heumueller, Stefanie Fladischer, Xiao Cheng, Erdmann Spiecker, Yongfang Li and Christoph J. Brabec

      Version of Record online: 6 MAY 2016 | DOI: 10.1002/aenm.201600515

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      A comprehensive insight into fine-tuning the structure–property interrelationship (a trade-off beyond efficiency) of the bithienyl-benzo[1,2-b:4,5-b′]dithiophene material class as a function of side chain engineering is provided.

    3. Formation of Uniform N-doped Carbon-Coated SnO2 Submicroboxes with Enhanced Lithium Storage Properties

      Xiaosi Zhou, Le Yu and Xiong Wen (David) Lou

      Version of Record online: 17 MAY 2016 | DOI: 10.1002/aenm.201600451

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      SnO2/nitrogen-doped carbon (NC) submicroboxes are synthesized by a facile templating and subsequent polydopamine-derived carbon coating method. Taking advantage of the unique structural features including high specific surface area, ultrasmall SnO2 subunits, and uniform N-doped carbon coating, these SnO2/NC submicroboxes show enhanced electrochemical performance as an anode material for lithium-ion batteries.

  8. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Progress Reports
    7. Communications
    8. Full Papers
    9. Frontispiece
    10. Full Papers
    1. You have free access to this content
      Photovoltaics: Nonhazardous Solvent Systems for Processing Perovskite Photovoltaics (Adv. Energy Mater. 14/2016)

      Kira L. Gardner, Jeffrey G. Tait, Tamara Merckx, Weiming Qiu, Ulrich W. Paetzold, Lucinda Kootstra, Manoj Jaysankar, Robert Gehlhaar, David Cheyns, Paul Heremans and Jef Poortmans

      Version of Record online: 20 JUL 2016 | DOI: 10.1002/aenm.201670084

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      In article number 1600386, Jeffrey G. Tait and co-workers develop non-hazardous ink systems, based on solvent-alcohol-acid, for coating perovskite photovoltaic films in a single step. Coating was further developed from spin to blade, while the high yield process produced efficient 4 cm2 modules.

  9. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
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    7. Communications
    8. Full Papers
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    1. You have full text access to this OnlineOpen article
      Nonhazardous Solvent Systems for Processing Perovskite Photovoltaics

      Kira L. Gardner, Jeffrey G. Tait, Tamara Merckx, Weiming Qiu, Ulrich W. Paetzold, Lucinda Kootstra, Manoj Jaysankar, Robert Gehlhaar, David Cheyns, Paul Heremans and Jef Poortmans

      Version of Record online: 27 MAY 2016 | DOI: 10.1002/aenm.201600386

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      Nonhazardous solvent-alcohol-acid systems are developed for single-step deposition of perovskite photovoltaic layers, based on Hansen solubility parameters. The blade coating of 4 cm2 modules demonstrates the high yield and uniformity of the ink's coating capability.

    2. Tunable Polyaniline-Based Porous Carbon with Ultrahigh Surface Area for CO2 Capture at Elevated Pressure

      Jiajun He, John W. F. To, Peter C. Psarras, Hongping Yan, Tracey Atkinson, Randall T. Holmes, Dennis Nordlund, Zhenan Bao and Jennifer Wilcox

      Version of Record online: 17 MAY 2016 | DOI: 10.1002/aenm.201502491

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      A series of porous carbons is developed from a 3D hierarchical nanostructured polymer hydrogel, with ultrahigh surface areas up to 4196 m2 g−1 and abundant micro- and narrow mesopores. The optimized carbon is a promising candidate for high-pressure CO2 capture, with excellent CO2 total adsorption as high as 28.3 mmol g−1 at 25 °C and 30 bar.

    3. Layer-by-Layer Na3V2(PO4)3 Embedded in Reduced Graphene Oxide as Superior Rate and Ultralong-Life Sodium-Ion Battery Cathode

      Yanan Xu, Qiulong Wei, Chang Xu, Qidong Li, Qinyou An, Pengfei Zhang, Jinzhi Sheng, Liang Zhou and Liqiang Mai

      Version of Record online: 23 MAY 2016 | DOI: 10.1002/aenm.201600389

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      The layer-by-layer Na3V2(PO4)3@rGO (NVP@rGO) nanocomposite is successfully synthesized via a surface charge modified approach followed by annealing. This kind of stable layer-by-layer structure synergistically combines the advantages of electronic conductive rGO and rapid ion diffusion of (Na) super ion conductor structured NVP nanoscrystal with remarkable rate capability and long-term cycling performance.

    4. Lithium Fluoride Based Electron Contacts for High Efficiency n-Type Crystalline Silicon Solar Cells

      James Bullock, Peiting Zheng, Quentin Jeangros, Mahmut Tosun, Mark Hettick, Carolin M. Sutter-Fella, Yimao Wan, Thomas Allen, Di Yan, Daniel Macdonald, Stefaan De Wolf, Aïcha Hessler-Wyser, Andres Cuevas and Ali Javey

      Version of Record online: 25 MAY 2016 | DOI: 10.1002/aenm.201600241

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      Exceptionally low contact resistivity is demonstrated on lightly doped (5 × 1015 cm−3) n-type silicon via a nanometer thin lithium fluoride (LiFx) interlayer. This advancement enables the fabrication of a first-of-its-kind n-type silicon solar cell with a LiFx/Al partial rear contact made to less than 1% of the cell's area. An efficiency of over 20% is achieved at the proof-of-concept stage.

    5. Discerning the Surface and Bulk Recombination Kinetics of Organic–Inorganic Halide Perovskite Single Crystals

      Bo Wu, Huy Tiep Nguyen, Zhiliang Ku, Guifang Han, David Giovanni, Nripan Mathews, Hong Jin Fan and Tze Chien Sum

      Version of Record online: 27 MAY 2016 | DOI: 10.1002/aenm.201600551

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      The surface and bulk photophysics of perovskite single crystals are clearly separated in an all-optical approach. Their surface photophysics is similar to that of polycrystalline thin films, but is significantly different in the bulk region. Key properties from both regions (e.g., recombination lifetimes, trap densities, surface recombination velocity, diffusion lengths, etc.) essential for optoelectronic applications are obtained in this comprehensive study.

    6. Design Principles for Optimum Performance of Porous Carbons in Lithium–Sulfur Batteries

      Ritu Sahore, Barnaby D. A. Levin, Mian Pan, David A. Muller, Francis J. DiSalvo and Emmanuel P. Giannelis

      Version of Record online: 2 MAY 2016 | DOI: 10.1002/aenm.201600134

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      Porosity characteristics of porous carbons toward their performance as sulfur hosts in Li–S battery cathodes are systematically investigated at a high sulfur loading of ≈80 wt%. A series of hierarchical porous carbons with highly controlled porosity is employed as a model system. Additionally, cryo-TEM is used for the first time to directly observe the sulfur distribution in the composite particles.

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