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  • Urchin-like Ni1/3Co2/3(CO3)0.5OH·0.11H2O anchoring on polypyrrole nanotubes for supercapacitor electrodes
  • 来源:王慧奇教授/博导个人网站 2019-01-09
  • Metal carbonate hydroxide is a promising electrode material for advanced supercapacitors but suffers from the poor electronic conductivity. Herein, we address this issue through the in-situ formation of Ni1/3Co2/3(CO3)0.5OH$0.11H2O anchoring onto the surface of polypyrrole nanotubes via a hydrothermal method. The Ni1/3Co2/3(CO3)0.5OH$0.11H2O/polypyrrole nanotubes composites possess high speci?c surface area and electronic conductivity, resulting in large charge storage and fast charge/discharge rate.

    The synthesized composite electrodes exhibit a high speci?c capacitance of 964.8 F g-1

    at 1 A g1 and low the equivalent series resistance of 0.24 U . Moreover, the assembled asymmetric supercapacitors exhibithigh energy density of 41.86 Wh kg-1

    with a power density of 562 W kg-1, and high power density of 11.25 kW kg-1 with an energy density of 16.97 Wh kg-1. The capacitance retention remains 80.2% after 5000 cycles at 5 A g

    -1, indicating the excellent cycling stability. The results indicate that Ni1/3Co2/3(CO3)0.5OH$0.11H2O/polypyrrole nanotubes composites are a potential electrode material for high-performance supercapacitors.

  • [来源:中国聚合物网]
  • 了解更多请进入: 王慧奇教授/博导个人网站
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