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Advanced Materials

High-Performance Supercapacitors Based on Intertwined CNT/V2O5 Nanowire Nanocomposites

Authors

  • Zheng Chen,

    1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
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  • Veronica Augustyn,

    1. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
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  • Jing Wen,

    1. Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA
    2. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
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  • Yuewei Zhang,

    1. Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA
    2. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
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  • Meiqing Shen,

    Corresponding author
    1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
    • School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
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  • Bruce Dunn,

    Corresponding author
    1. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
    • Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA
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  • Yunfeng Lu

    Corresponding author
    1. Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA
    • Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA
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Abstract

High-performance asymmetric super-capacitors containing thick-film electrodes (over 100 μm thick) made of CNT/V2O5 nanowire composite are designed. The excellent conductivity, high specific capacitance, and a large voltage window of the CNT/V2O5 nanocomposite enable the fabrication of devices with high energy and high power densities. Moreover, the resulting devices exhibit excellent cycling stability. This supercapacitor approach may be attractive for a wide range of device applications.

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