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Advanced Materials

A Cost-Effective Supercapacitor Material of Ultrahigh Specific Capacitances: Spinel Nickel Cobaltite Aerogels from an Epoxide-Driven Sol–Gel Process

Authors

  • Te-Yu Wei,

    1. Department of Chemical Engineering, National Tsing-Hua University Hsin-Chu, TAIWAN 30013 (Republic of China)
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  • Chun-Hung Chen,

    1. Department of Chemical Engineering, National Tsing-Hua University Hsin-Chu, TAIWAN 30013 (Republic of China)
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  • Hsing-Chi Chien,

    1. Department of Chemical Engineering, National Tsing-Hua University Hsin-Chu, TAIWAN 30013 (Republic of China)
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  • Shih-Yuan Lu,

    Corresponding author
    1. Department of Chemical Engineering, National Tsing-Hua University Hsin-Chu, TAIWAN 30013 (Republic of China)
    • Department of Chemical Engineering, National Tsing-Hua University Hsin-Chu, TAIWAN 30013 (Republic of China).
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  • Chi-Chang Hu

    Corresponding author
    1. Department of Chemical Engineering, National Tsing-Hua University Hsin-Chu, TAIWAN 30013 (Republic of China)
    • Department of Chemical Engineering, National Tsing-Hua University Hsin-Chu, TAIWAN 30013 (Republic of China).
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Abstract

Nickel cobaltite (NiCo2O4) aerogels, synthesized with a chloride-based epoxide-driven sol–gel process, exhibit ultrahigh specific capacitances (1400 F g−1; see figure), excellent reversibility, and outstanding cycle stability, at a relatively high mass loading of 0.4 mg cm−2.

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