Solid-State Supercapacitor Based on Activated Carbon Cloths Exhibits Excellent Rate Capability

Authors

  • Gongming Wang,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, California, USA
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  • Hanyu Wang,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, California, USA
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  • Xihong Lu,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, California, USA
    2. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, P R China
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  • Yichuan Ling,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, California, USA
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  • Minghao Yu,

    1. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, P R China
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  • Teng Zhai,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, California, USA
    2. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, P R China
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  • Yexiang Tong,

    1. KLGHEI of Environment and Energy Chemistry, MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, P R China
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  • Yat Li

    Corresponding author
    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, California, USA
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Abstract

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Activated carbon cloth is used as an electrode, achieving an excellent areal capacitance of 88 mF/cm2 (8.8 mF/g) without the use of any other capacitive materials. Significantly, when it is incorporated as part of a symmetric solid-state supercapacitor device, a remarkable charge/discharge rate capability is observed; 50% of the capacitance is retained when the charging rate increases from 10 to 10 000 mV/s.

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