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Improving the Cycling Stability of Metal–Nitride Supercapacitor Electrodes with a Thin Carbon Shell

Authors

  • Xihong Lu,

    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, People's Republic of China
    2. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, USA
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  • Tianyu Liu,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, USA
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  • Teng Zhai,

    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, People's Republic of China
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  • Gongming Wang,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, 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, People's Republic of China
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  • Shilei Xie,

    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, People's Republic of China
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  • Yichuan Ling,

    1. Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, USA
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  • Chaolun Liang,

    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, People's Republic of China
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  • Yexiang Tong,

    Corresponding author
    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, People's Republic of China
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  • Yat Li

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

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The electrochemical stability of metal–nitride (TiN and VN) electrodes is improved by a general strategy involving the addition of a thin carbon shell to the metal–nitride nanowires (NWs), producing TiN@C and VN@C NWs. The carbon shell effectively suppresses any electrochemical oxidation reactions, allowing the metal nitrides to retain their structure, without sacrificing their electrochemical performance for charge storage.

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