Advanced Energy Materials

Cover image for Advanced Energy Materials

October, 2013

Volume 3, Issue 10

Pages 1249–1387

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Communications
    7. Full Papers
    1. You have free access to this content
      Electrochemistry: Aerosol OT/Water System Coupled with Triiodide/Iodide (I3/I) Redox Electrolytes for Highly Efficient Dye-Sensitized Solar Cells (Adv. Energy Mater. 10/2013) (page 1249)

      Eui-Hyun Kong, Jongchul Lim, Yong-June Chang, Yeon-Hee Yoon, Taiho Park and Hyun Myung Jang

      Article first published online: 15 OCT 2013 | DOI: 10.1002/aenm.201370040

      Thumbnail image of graphical abstract

      An aerosol OT (AOT; sodium bis(2-ethylhexyl)sulfosuccinate)/water system coupled with I3/I electrolyte enables the control of the concentration of the redox couples through the hydrogen-bonding association between the AOT and the carboxy group of the dye in dye-sensitized solar cells (DSCs), as demonstrated by Taiho Park, Hyun Myung Jang, and co-workers on page 1344. This novel concept provides insight into the regeneration and recombination kinetics and allows for the development of highly efficient DSCs.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Communications
    7. Full Papers
    1. You have free access to this content
      Supercapacitors: Structure-Controlled, Vertical Graphene-Based, Binder-Free Electrodes from Plasma-Reformed Butter Enhance Supercapacitor Performance (Adv. Energy Mater. 10/2013) (page 1250)

      Dong Han Seo, Zhao Jun Han, Shailesh Kumar and Kostya (Ken) Ostrikov

      Article first published online: 15 OCT 2013 | DOI: 10.1002/aenm.201370041

      Thumbnail image of graphical abstract

      On page 1316 Kostya (Ken) Ostrikov and co-workers present a plasma-assisted process using butter as the natural precursor to enable the green synthesis of vertical graphene nanosheets (VGNS). The VGNS show a controllable degree of graphitization and edge planes and possess advantageous features such as large surface area, 3D and open network structure, and excellent electrical transport properties. VGNS employed as the binderfree supercapacitor electrodes exhibit high specific capacitance with excellent stability. Such performance can be further enhanced through the synergistic integration of VGNs and manganese oxide nanoparticles.

  3. Masthead

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Communications
    7. Full Papers
    1. You have free access to this content
      Masthead: (Adv. Energy Mater. 10/2013)

      Article first published online: 15 OCT 2013 | DOI: 10.1002/aenm.201370042

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Communications
    7. Full Papers
    1. You have free access to this content
      Contents: (Adv. Energy Mater. 10/2013) (pages 1251–1256)

      Article first published online: 15 OCT 2013 | DOI: 10.1002/aenm.201370043

  5. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Communications
    7. Full Papers
    1. Role of Transition Metal in Fast Oxidation Reaction on the Pt3TM (111) (TM = Ni, Co) Surfaces (pages 1257–1261)

      Yong Su Kim, Sang Ho Jeon, Aaron Bostwick, Eli Rotenberg, Philip N. Ross, Vojislav R. Stamenkovic, Nenad M. Markovic, Tae Won Noh, Seungwu Han and Bongjin Simon Mun

      Article first published online: 29 MAY 2013 | DOI: 10.1002/aenm.201300166

      Thumbnail image of graphical abstract

      Revealing the electronic structures of Pt-alloys explains why the addition of transition metal to Pt speeds up the oxygen reduction reaction. It is found that transition metals in the subsurface induce charge polarization at the surface and suppresses the surface-states. The modified surface-states of Pt surface layer critically affects the chemical bonding between oxygen and Pt surfaces.

    2. A Solution-Processed Hole Extraction Layer Made from Ultrathin MoS2 Nanosheets for Efficient Organic Solar Cells (pages 1262–1268)

      Xing Gu, Wei Cui, Hai Li, Zhongwei Wu, Zhiyuan Zeng, Shuit-Tong Lee, Hua Zhang and Baoquan Sun

      Article first published online: 24 JUL 2013 | DOI: 10.1002/aenm201300549

      Thumbnail image of graphical abstract

      Room-temperature solution-processed ultrathin 2D MoS2 nanosheets are integrated into organic solar cells as an efficient hole extraction layer. An enhanced power conversion efficiency of 8.11% is achieved, which is superior to that of traditional vacuum-evaporated molybdenum oxide.

    3. Strain-Driven Formation of Multilayer Graphene/GeO2 Tubular Nanostructures as High-Capacity and Very Long-Life Anodes for Lithium-Ion Batteries (pages 1269–1274)

      Yao Chen, Chenglin Yan and Oliver G. Schmidt

      Article first published online: 4 SEP 2013 | DOI: 10.1002/aenm201300575

      Thumbnail image of graphical abstract

      A multilayer graphene/GeO2 tubular nanoarchitecture by a strain-driven method shows simultaneously a high reversible capacity of 919 mAh g−1 at 0.1 C after 100 cycles, a remarkable cycling performance of over 100% capacity retention after 700 cycles with a very high capacity of 821 mAh g−1 at 1 C, and superior rate capability.

    4. An Artificial Solid Electrolyte Interphase Enables the Use of a LiNi0.5 Mn1.5 O4 5 V Cathode with Conventional Electrolytes (pages 1275–1278)

      Juchuan Li, Loïc Baggetto, Surendra K. Martha, Gabriel M. Veith, Jagjit Nanda, Chengdu Liang and Nancy J. Dudney

      Article first published online: 13 AUG 2013 | DOI: 10.1002/aenm201300378

      Thumbnail image of graphical abstract

      An artificial solid electrolyte interphase (SEI) consisting of a lithium-ion conducting material enables the use of a LiNi0.5Mn1.5O4 cathode with conventional carbonate electrolytes. The coulombic loss and electrolyte oxidation are largely remedied by the nanometer-scale artificial SEI. The thickness of the artificial SEI is optimized by balancing the protection and additional resistance.

    5. Solution-Processed (Graphene Oxide)–(d0 Transition Metal Oxide) Composite Anodic Buffer Layers toward High-Performance and Durable Inverted Polymer Solar Cells (pages 1279–1285)

      Yi-Hsiang Chao, Jhong-Sian Wu, Chen-En Wu, Jyun-Fong Jheng, Chien-Lung Wang and Chain-Shu Hsu

      Article first published online: 5 JUL 2013 | DOI: 10.1002/aenm.201300430

      Thumbnail image of graphical abstract

      Composite anodic buffer layers composed of solution-processed graphene oxide and vanadium oxide (GO/VOx) exhibit a significant enhancement in their electron-blocking properties and sol–gel-precursor blocking abilities, compared to buffer layers of only the d0 transition metal oxide. Such composites enable inverted polymer solar cells to have high open-circuit voltage and fill factor values, as well as the highest power conversion efficiency to date of 6.7%, shedding light on how stable and cost-effective whole-solution-processed polymer solar cells may be achieved.

    6. Carbon-Free TiO2 Battery Electrodes Enabled by Morphological Control at the Nanoscale (pages 1286–1291)

      Chunjoong Kim, Raffaella Buonsanti, Riley Yaylian, Delia J. Milliron and Jordi Cabana

      Article first published online: 26 JUN 2013 | DOI: 10.1002/aenm.201300264

      Thumbnail image of graphical abstract

      The use of battery electrode architectures free of support components would enable gains in device energy density. The electrochemical behavior of carbon-free electrodes with different anatase TiO2 particles is investigated. The performance is found to depend on both crystal size and morphology. Electrodes with 3 × 20 nm rods showed exceptional durability and rate capability, even when compared to electrodes with carbon additives

  6. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Communications
    7. Full Papers
    1. Fully Plastic Dye Solar Cell Devices by Low-Temperature UV-Irradiation of both the Mesoporous TiO2 Photo- and Platinized Counter-Electrodes (pages 1292–1298)

      Valerio Zardetto, Francesco Di Giacomo, Diana Garcia-Alonso, Wytze Keuning, Mariadriana Creatore, Claudia Mazzuca, Andrea Reale, Aldo Di Carlo and Thomas M. Brown

      Article first published online: 7 JUN 2013 | DOI: 10.1002/aenm.201300101

      Thumbnail image of graphical abstract

      UV irradiation processes and formulations are successfully developed for low-temperature fabrication of both mesoporous TiO2 photoanodes and platinum counter- electrodes on polymer substrates. For the first time fully plastic UV-processed dye solar cells and modules with integrated W series interconnections are demonstrated.

    2. Structural and Electrochemical Study of Al2O3 and TiO2 Coated Li1.2Ni0.13Mn0.54Co0.13O2 Cathode Material Using ALD (pages 1299–1307)

      Xiaofeng Zhang, Ilias Belharouak, Li Li, Yu Lei, Jeffrey W. Elam, Anmin Nie, Xinqi Chen, Reza S. Yassar and Richard L. Axelbaum

      Article first published online: 12 JUN 2013 | DOI: 10.1002/aenm.201300269

      Thumbnail image of graphical abstract

      An atomic layer deposition (ALD) process is applied to the porous Li-rich cathode Li1.2Ni0.13Mn0.54Co0.13O2 particle for Li-ion batteries. The ALD coated Al2O3 using TMA precursor produces a conformal coating on the particles, which is contrary to the particulate morphology of the ALD-coated TiO2. The paper discusses the impacts of ALD surface-protection film on the battery performance in half- and full-cell configurations at different temperatures.

    3. Plasma-Enhanced Atomic Layer Deposition of Ultrathin Oxide Coatings for Stabilized Lithium–Sulfur Batteries (pages 1308–1315)

      Hyea Kim, Jung Tae Lee, Dong-Chan Lee, Alexandre Magasinski, Won-il Cho and Gleb Yushin

      Article first published online: 12 JUN 2013 | DOI: 10.1002/aenm.201300253

      Thumbnail image of graphical abstract

      A thin conformal Li-ion permeable oxide layer is created by rapid plasma enhanced atomic layer deposition (PEALD) for lithium–sulfur batteries in order to prevent the polysulfide dissolution. PEALD offers a fast deposition rate combined with a low operating temperature, which avoids sulfur evaporation during deposition. The result is significantly enhanced cycle life with a capacity of up to 600 mA·h·g−1.

    4. Structure-Controlled, Vertical Graphene-Based, Binder-Free Electrodes from Plasma-Reformed Butter Enhance Supercapacitor Performance (pages 1316–1323)

      Dong Han Seo, Zhao Jun Han, Shailesh Kumar and Kostya (Ken) Ostrikov

      Article first published online: 3 JUL 2013 | DOI: 10.1002/aenm.201300431

      Thumbnail image of graphical abstract

      Controllable vertical graphene nanosheets are fabricated by reforming cheap and spreadable natural precursor butter in a simple, plasma-assisted chemical vapor process. Electrodes made by these graphene nanosheets showed excellent supercapacitor performance compared to nanosheets produced from the conventional purified hydrocarbon gases or other precursors such as honey and milk.

    5. Electrochemical Reaction of Lithium with Nanostructured Silicon Anodes: A Study by In-Situ Synchrotron X-Ray Diffraction and Electron Energy-Loss Spectroscopy (pages 1324–1331)

      Feng Wang, Lijun Wu, Baris Key, Xiao-Qing Yang, Clare P. Grey, Yimei Zhu and Jason Graetz

      Article first published online: 12 AUG 2013 | DOI: 10.1002/aenm.201300394

      Thumbnail image of graphical abstract

      Electrochemically driven amorphization of nanoscale Si occurs by a two-step process. First, there is a gradual decrease in the amount of crystalline Si due to the reaction with surfaces and grain boundaries; then this is followed by a second step of a rapid drop in the crystalline Si due to the lithiation of the crystalline core.

    6. Highly Stretchable, Sparse, Metallized Nanofiber Webs as Thin, Transferrable Transparent Conductors (pages 1332–1337)

      Saeid Soltanian, Rowshan Rahmanian, Bobak Gholamkhass, Nima Mohseni Kiasari, Frank Ko and Peyman Servati

      Article first published online: 26 JUN 2013 | DOI: 10.1002/aenm.201300193

      Thumbnail image of graphical abstract

      Metallized electrospun polyacrylonitrile nanofibers are used to realize flexible transparent conductors with performances comparable to that of ITO. Transferred onto PDMS substrates, the transparent conductive nanofibrous network exhibits an unprecedented stretchability with stable electrical conductance, by virtue of the rearrangement of the fiber network rather than the tensile deformation of the individual fibers.

    7. Low Current Density Driving Leads to Efficient, Bright and Stable Green Electroluminescence (pages 1338–1343)

      Daniel Tordera, Julien Frey, David Vonlanthen, Edwin Constable, Antonio Pertegás, Enrique Ortí, Henk J. Bolink, Etienne Baranoff and M. Khaja Nazeeruddin

      Article first published online: 6 JUN 2013 | DOI: 10.1002/aenm.201300284

      Thumbnail image of graphical abstract

      Highly efficient light-emitting electrochemical cells are prepared based on a green phosphorescent ionic iridium complex. By using a current-based driving method, the relation between current density and device efficiency is investigated. A strong dependence of the efficiency on the current density is found. Maximum efficacies of 28.2 cd A−1 at a luminance above 750 cd m−2 are achieved by optimizing the driving parameters.

    8. Aerosol OT/Water System Coupled with Triiodide/Iodide (I3/I) Redox Electrolytes for Highly Efficient Dye-Sensitized Solar Cells (pages 1344–1350)

      Eui-Hyun Kong, Jongchul Lim, Yong-June Chang, Yeon-Hee Yoon, Taiho Park and Hyun Myung Jang

      Article first published online: 29 MAY 2013 | DOI: 10.1002/aenm.201300275

      Thumbnail image of graphical abstract

      Surfactant and water system: The introduction of an aerosol OT (AOT)/water system to the I3/I electrolyte enables the control of the concentration of the redox couples through the hydrogen-bonding association between the AOT and the carboxy group of the dye, which consequently achieves a high power conversion efficiency of ∼11% (under 1 sun illumination) owing to the enhanced dye-regeneration efficiency and the reduced recombination rate

    9. Nanosilicon-Based Thick Negative Composite Electrodes for Lithium Batteries with Graphene as Conductive Additive (pages 1351–1357)

      Binh Phuong Nhan Nguyen, Nanjundan Ashok Kumar, Joël Gaubicher, Florence Duclairoir, Thierry Brousse, Olivier Crosnier, Lionel Dubois, Gérard Bidan, Dominique Guyomard and Bernard Lestriez

      Article first published online: 6 JUN 2013 | DOI: 10.1002/aenm.201300330

      Thumbnail image of graphical abstract

      Batteries better than black: In contrast to conventional Si electrodes that use acetylene black as an additive, Si–reduced graphene oxide–carboxymethyl cellulose (Si–rGO–CMC) electrodes have improved coulombic efficiency and longer cycle life. Si particles are bound to the flexible rGO sheets through the soft and dynamic CMC bridges, which allows excellent reversibility of the alloying process in these electrodes.

    10. Atomic Structure of Li2MnO3 after Partial Delithiation and Re-Lithiation (pages 1358–1367)

      Rui Wang, Xiaoqing He, Lunhua He, Fangwei Wang, Ruijuan Xiao, Lin Gu, Hong Li and Liquan Chen

      Article first published online: 6 JUN 2013 | DOI: 10.1002/aenm.201200842

      Thumbnail image of graphical abstract

      The atomic structures of Li2MnO3 after delithiation and re-lithiation are directly observed using spherical aberration-corrected scanning transmission electron microscopy. It is found that after electrochemical treatments, a new stacking sequence of LiMn2 planes appears and the regularly arrayed LiMn2 planes become disordered. LiMnO2 and some new domains are also found in the delithiated state in the first cycle.

    11. Understanding the Role of Nanostructures for Efficient Hydrogen Generation on Immobilized Photocatalysts (pages 1368–1380)

      Zhelong Jiang, Yuxin Tang, Qiuling Tay, Yanyan Zhang, Oleksandr I. Malyi, Danping Wang, Jiyang Deng, Yuekun Lai, Huanfu Zhou, Xiaodong Chen, Zhili Dong and Zhong Chen

      Article first published online: 13 JUN 2013 | DOI: 10.1002/aenm.201300380

      Thumbnail image of graphical abstract

      Different photocatalytic performance–nanostructure correlations are observed on photoelectrochemical cell and direct heterogeneous photocatalysis. It is demonstrated that intimate interparticle connected nanostructures with vectorial charge conduction are favorable in photoelectrochemical cells. For direct heterogeneous photocatalysis, high reactivity facets are more desirable, which have better photoactivated semiconductor/electrolyte interface and better charge separation efficiency.

    12. Formation of CuInSe2 and CuGaSe2 Thin-Films Deposited by Three-Stage Thermal Co-Evaporation: A Real-Time X-Ray Diffraction and Fluorescence Study (pages 1381–1387)

      Humberto Rodriguez-Alvarez, Alfons Weber, Jakob Lauche, Christian Alexander Kaufmann, Thorsten Rissom, Dieter Greiner, Manuela Klaus, Thomas Unold, Christoph Genzel, Hans-Werner Schock and Roland Mainz

      Article first published online: 26 JUN 2013 | DOI: 10.1002/aenm.201300339

      Thumbnail image of graphical abstract

      X-ray diffraction and fluorescence analysis are used to monitor in situ the three-stage co-evaporation of CuInSe2 and CuGaSe2 thin films for solar cells. Thanks to a novel experimental setup tailor made for the EDDI beamline at the BESSY II synchrotron facility, it is possible to follow and model the phase transformations and microstructural changes occurring during the co-evaporation of Cu-In-Ga-Se thin films.

SEARCH

SEARCH BY CITATION