Capacitance properties of graphite oxide/poly(3,4-ethylene dioxythiophene) composites

Authors

  • Yongqin Han,

    1. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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  • Bing Ding,

    1. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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  • Hao Tong,

    1. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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  • Xiaogang Zhang

    Corresponding author
    1. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    • College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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Abstract

Poly(3,4-ethylene dioxythiophene) (PEDOT) and graphite oxide (GO)/PEDOT composites (GPTs) doped with poly(sodium styrene sulfate) (PSS) were synthesized by in situ polymerization in aqueous media. The electrochemical capacitance performances of GO, PEDOT–PSS, and GPTs as electrode materials were investigated. The GPTs had a higher specific capacitance of 108 F/g than either composite constituent (11 F/g for GO and 87 F/g for PEDOT–PSS); this was attributable to its high electrical conductivity and the layer-within/on-layer composite structure. Such an increase demonstrated that the synergistic combination of GO and PEDOT–PSS had advantages over the sum of the individual components. On the basis of cycle-life tests, the capacitance retention of about 78% for the GPTs compared with that of 66% for PEDOT–PSS after 1200 cycles suggested a high cycle stability of the GPTs and its potential as an electrode material for supercapacitor applications. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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