Advanced Energy Materials

Cover image for Vol. 6 Issue 3

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

Editor-in-Chief: Joern Ritterbusch, Deputy Editor: Guangchen Xu

Impact Factor: 16.146

ISI Journal Citation Reports © Ranking: 2014: 3/89 (Energy & Fuels); 4/139 (Chemistry Physical); 4/144 (Physics Applied); 4/67 (Physics Condensed Matter); 5/260 (Materials Science Multidisciplinary)

Online ISSN: 1614-6840

Associated Title(s): Advanced Electronic Materials, Advanced Engineering Materials, Advanced Functional Materials, Advanced Healthcare Materials, Advanced Materials, Advanced Materials Interfaces, Advanced Optical Materials, Advanced Science, Energy Technology, Fuel Cells, Particle & Particle Systems Characterization, Small

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  1. Full Papers

    1. Amino-Functionalized Conjugated Polymer as an Efficient Electron Transport Layer for High-Performance Planar-Heterojunction Perovskite Solar Cells

      Chen Sun, Zhihong Wu, Hin-Lap Yip, Hua Zhang, Xiao-Fang Jiang, Qifan Xue, Zhicheng Hu, Zhanhao Hu, Yan Shen, Mingkui Wang, Fei Huang and Yong Cao

      Article first published online: 8 DEC 2015 | DOI: 10.1002/aenm.201501534

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      The fullerene electron transport layer is replaced by a thickness-insensitive ­conjugated polymer in p–i–n planar hetero­junction perovskite solar cells. The amines of polymer side chains can both passivate the surface traps of perovskite and reduce the work function of the metal cathode. With these dual functionalities, the resulting solar cells show 16.7% power conversion efficiency (PCE), which outperforms those based on fullerene interlayer.

  2. Reviews

    1. Integration: An Effective Strategy to Develop Multifunctional Energy Storage Devices

      Shaowu Pan, Jing Ren, Xin Fang and Huisheng Peng

      Article first published online: 8 DEC 2015 | DOI: 10.1002/aenm.201501867

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      Recent progress in integrating a variety of functions into electrochemical energy storage devices is carefully described with an emphasis on the design of materials and structures. The main challenges and important directions are also summarized to offer some useful clues for the future development.

  3. Full Papers

    1. Extraordinary Performance of Carbon-Coated Anatase TiO2 as Sodium-Ion Anode

      Muhammad Nawaz Tahir, Bernd Oschmann, Daniel Buchholz, Xinwei Dou, Ingo Lieberwirth, Martin Panthöfer, Wolfgang Tremel, Rudolf Zentel and Stefano Passerini

      Article first published online: 7 DEC 2015 | DOI: 10.1002/aenm.201501489

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      The extraordinary electrochemical performance of carbon-coated TiO2 nanoparticles, obtained via in situ polymer functionalization, is reported. The enhanced performance as Na-ion anode can be ascribed to the synergetic effect of the small particle size (≈11 nm) and homogeneous carbon coating as confirmed via comparison with uncoated particles of comparable size (≈15 nm), and larger (≈40 nm) particles with carbon coating.

  4. Communications

    1. Tailoring Unique Mesopores of Hierarchically Porous Structures for Fast Direct Electrochemistry in Microbial Fuel Cells

      Long Zou, Yan Qiao, Zhen-Yu Wu, Xiao-Shuai Wu, Jia-Le Xie, Shu-Hong Yu, Jinhong Guo and Chang Ming Li

      Article first published online: 7 DEC 2015 | DOI: 10.1002/aenm.201501535

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      A highly biocompatible hierarchically porous structure comprising macro-, meso- or micropores from cost-effective bacterial cellulose through a facile carbonization approach is tailored for its nanopore structure to disclose the mechanism in a porous electrode to enhance direct electrochemistry through endogenous mediator-based electron transfer between microbes and electrode. The unique mediator-accessible mesopore structure is necessary to greatly boost anode bioelectrocatalysis.

  5. Full Papers

    1. Highly Stable Transparent Conductive Silver Grid/PEDOT:PSS Electrodes for Integrated Bifunctional Flexible Electrochromic Supercapacitors

      Guofa Cai, Peter Darmawan, Mengqi Cui, Jiangxin Wang, Jingwei Chen, Shlomo Magdassi and Pooi See Lee

      Article first published online: 7 DEC 2015 | DOI: 10.1002/aenm.201501882

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      By coating a layer of PEDOT:PSS on a silver grid film, a highly stable transparent and conductive hybrid film has been successfully fabricated by a facile and low-cost method. It presents an excellent electrochemical cycling stability, a remarkable mechanical flexibility, and an outstanding electrochromic and energy-storage performance when used as flexible electrochromic supercapacitor electrodes.

  6. Communications

    1. Dual Planar-Helix Type Energy Storage Wires to Circumvent Universal Energy Lag Effect

      Inho Nam, Jongseok Park, Soomin Park, Seongjun Bae, Young Geun Yoo and Jongheop Yi

      Article first published online: 3 DEC 2015 | DOI: 10.1002/aenm.201501812

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      There has been an unsolvable bottleneck in energy storage wires, a greatly diminished energy even when the most advanced materials are used. Here, the bottleneck is proved using analytical derivation, which is referred as an “energy lag effect.” To solve the effect, new-type energy storage wires are designed, including a dual planar-helix structure. The systems do not show any energy lagging, experimentally or analytically.

    2. Beneficial Effects of PbI2 Incorporated in Organo-Lead Halide Perovskite Solar Cells

      Young Chan Kim, Nam Joong Jeon, Jun Hong Noh, Woon Seok Yang, Jangwon Seo, Jae S. Yun, Anita Ho-Baillie, Shujuan Huang, Martin A. Green, Jan Seidel, Tae Kyu Ahn and Sang Il Seok

      Article first published online: 3 DEC 2015 | DOI: 10.1002/aenm.201502104

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      Beneficial effects are demonstrated by PbI2 incorporated into perovskite materials as a light absorber in solar cells. The PbI2 distributed into the perovskite layers leads to reduced hysteresis and ionic migration, and enables the fabrication of remarkably improved solar cells with a certified power conversion efficiency of 19.75% under air-mass 1.5 global (AM 1.5G) illumination of 100 mW cm−2 intensity.

  7. Full Papers

    1. Enhancing Low-Bias Performance of Hematite Photoanodes for Solar Water Splitting by Simultaneous Reduction of Bulk, Interface, and Surface Recombination Pathways

      In Sun Cho, Hyun Soo Han, Manca Logar, Joonsuk Park and Xiaolin Zheng

      Article first published online: 3 DEC 2015 | DOI: 10.1002/aenm.201501840

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      For a hematite (α-Fe2O3) photoanode, multiple electron/hole recombination pathways occurring in the bulk, interfaces, and surfaces largely limit its low-bias performance for photoelectrochemical (PEC) water splitting. A facile and rapid three-step approach is reported to simultaneously reduce these recombinations for hematite nanorods array photoanodes, leading to a greatly reduced onset potential down to 0.64 VRHE for PEC water oxidation.

    2. Controlling the Active Sites of Sulfur-Doped Carbon Nanotube–Graphene Nanolobes for Highly Efficient Oxygen Evolution and Reduction Catalysis

      Abdelhamid M. El-Sawy, Islam M. Mosa, Dong Su, Curtis J. Guild, Syed Khalid, Raymond Joesten, James F. Rusling and Steven L. Suib

      Article first published online: 3 DEC 2015 | DOI: 10.1002/aenm.201501966

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      A sequential two-step strategy to dope sulfur into carbon nanotube–graphene nanolobes is developed. Advanced characterization techniques confirm that increasing the incorporation of heterocyclic sulfur into the carbon ring of CNTs not only enhances OER activity at an overpotential of 350 mV but also retains 100% of stability for 75 h.

    3. Understanding Open-Circuit Voltage Loss through the Density of States in Organic Bulk Heterojunction Solar Cells

      Samuel D. Collins, Christopher M. Proctor, Niva A. Ran and Thuc-Quyen Nguyen

      Article first published online: 30 NOV 2015 | DOI: 10.1002/aenm.201501721

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      The open-circuit voltage in organic photovoltaic devices is well below the thermodynamic limit due to high rates of bimolecular recombination and energetic disorder. Here, the effect of disorder on voltage loss in molecular bulk heterojunction solar cells is carefully determined from a range of in situ energetic measurements.

    4. Nanodiamond-Embedded p-Type Copper(I) Oxide Nanocrystals for Broad-Spectrum Photocatalytic Hydrogen Evolution

      Zhaoyong Lin, Jun Xiao, Lihua Li, Pu Liu, Chengxin Wang and Guowei Yang

      Article first published online: 30 NOV 2015 | DOI: 10.1002/aenm.201501865

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      The use of nanodiamond to improve the photocatalytic hydrogen evolution reaction of Cu2O by nanocomposition is demonstrated for the first time. Compared with pure Cu2O, this nanocomposite shows a tremendous improvement in performance. It is also established that the electron-donating ability of nanodiamond, and the suitable band structures of the two components enhance electron injection from nanodiamond to Cu2O.

    5. Controllable ZnMgO Electron-Transporting Layers for Long-Term Stable Organic Solar Cells with 8.06% Efficiency after One-Year Storage

      Zhigang Yin, Qingdong Zheng, Shan-Ci Chen, Dongdong Cai and Yunlong Ma

      Article first published online: 27 NOV 2015 | DOI: 10.1002/aenm.201501493

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      High efficiency inverted organic solar cells (OSCs) with long-term stability are fabricated using controllable nanocolloid/nanoridge ZnMgO as electron-transporting layers (ETLs). A greatly improved efficiency of 9.39% is achieved for the OSCs with an optimized ZnMgO ETL. The device retains 8.06% efficiency after 1-year storage, which represents a record high value for long-term stable OSCs.

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