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AC/Ni(OH)2 as a porous electrode material for supercapacitors with high-performance
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  • Zhao Qin,
  • Jie Liu,
  • Biemin Sun,
  • Hanjun Zhou,
  • Lingyun Chen,
  • Yanqin Xu,
  • Yuan Cao,
  • Changguo Chen
Zhao Qin
Chongqing University
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Jie Liu
Chongqing University
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Biemin Sun
Chongqing University
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Hanjun Zhou
Chongqing University
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Lingyun Chen
Chongqing University
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Yanqin Xu
Chongqing University

Corresponding Author:[email protected]

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Yuan Cao
Chongqing University
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Changguo Chen
Chongqing University
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Abstract

A novel porous AC/Ni(OH)2 composite was prepared by a two-step hydrothermal method, which was used as an electrode for a supercapacitor for the first time with a specific capacitance of 1653.5 F/g at 1 A/g and a cycling stability of 90.2% after 3000 cycles. Moreover, there is a asymmetric supercapacitor (ASC) assembled by using AC/Ni(OH)2 and active carbon. On the condition of having a power density of 801.5 W kg-1 with the voltage window of 1.6 V, the ASC produces a high energy density of 38.58 W h kg-1, maintaining an outstanding cycling stability capacitance retention of 88.5% after 3000 cycles at current density of 8 A g-1. Therefore, AC/Ni(OH)2 electrode material helps to improve the performance of ASC devices and can be used as a potential electrode material for the development of energy storage devices in the future.