Preparation and Electrochemical Properties of Graphene-Modified Electrodes for All-Vanadium Redox Flow Batteries

Authors

  • Han-Min Tsai,

    1. Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Tel: 886-3-5713058 Fax: 886-3-5715408
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  • Shin-Yi Yang,

    1. Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Tel: 886-3-5713058 Fax: 886-3-5715408
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  • Chen-Chi M. Ma,

    Corresponding author
    1. Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Tel: 886-3-5713058 Fax: 886-3-5715408
    • Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, Tel: 886-3-5713058 Fax: 886-3-5715408
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  • Xiaofeng Xie

    1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
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Abstract

The electrochemical properties of graphene make it an attractive material for use in a range of devices. We herein describe the simple preparation of graphene-modified graphite (GMG) composite electrodes by hybridization with graphite for all-vanadium redox flow batteries (VRB). The cyclic voltammetry (CV) results revealed that the use of GMG composite electrodes with an optimal graphene loading content (3 wt%) allowed remarkable improvements in terms of both the reversibility and the current density, which was up to 30 % higher than that of the pristine graphite electrode, and that an electrode of this type shows considerable potential for use in VRBs.

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