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Construction of hierarchical structure of Co3O4 electrode based on electrospinning technique for supercapacitor

  • Lu, Yuan
  • Liu, Yangbiao
  • Mo, Jiamei
  • Deng, Binglu
  • Wang, Jixi
  • Zhu, Yanqing
  • Xiao, Xiudi
  • Xu, Gang
Publication Date
Feb 05, 2021
GuangZhou Institute of Energy Conversion
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The design and synthesis of hierarchical micro-nano structures of transition metal oxides have played an essential role in the supercapacitor field. In this work, in situ three-dimensional construction of nanoporous cobalt oxide (Co3O4) has been derived from the metal-organic framework (MOF) distributed evenly in electrospun polyacrylonitrile nanofibers. Due to large specific surface area and network architectures, the as-synthesized Co3O4 electrode notably presents a high specific capacitance of 970 F/g at a current density of 1 A/g. Besides, the as-obtained electrode exhibits a high energy density of 54.6 Wh/ kg at a power density of 360.6 W/kg and maintains a capacitance retention of 77.5% after 5000 cycles at 6 A/g. Therefore, this method paves a way to produce the nanoporous MOF-derived Co3O4 network architecture as advanced electrodes materials, which shows an application potential for the energy storage industry. (C) 2020 Elsevier B.V. All rights reserved.

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