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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

碳纳米管表面沉积氧化镍及其超电容器的电化学行为

王晓峰; 王大志; 梁吉   

  1. 清华大学机械工程系 北京 100084
  • 收稿日期:2002-03-04 修回日期:2002-05-27 出版日期:2003-03-20 网络出版日期:2003-03-20

Electrochemical Capacitor Using Nickel Oxide/Carbon Nanotube Composites Electrode

WANG Xiao-Feng; WANG Da-Zhi; LIANG Ji   

  1. Department of Mechanical Engineering Tsinghua University; Beijing 100084; China
  • Received:2002-03-04 Revised:2002-05-27 Published:2003-03-20 Online:2003-03-20

PDF (PC)

1664

被引次数

174

摘要： 通过催化裂解法制备了碳纳米管并进一步制备了碳纳米管薄膜电极.基于该种材料的超电容器电极比容量达到36F/g.研究了在碳纳米管薄膜基体上使用电化学方法沉积氧化镍的新工艺,制备出碳纳米管和氧化镍的复合电极.电化学测试证明复合电极的比容量提高到52F/g以上且基于这种复合电极的超电容器具有极低的自放电率.

关键词: 碳纳米管, 氧化镍, 超级电容器, 电化学电容

Abstract: Carbon nanotubes prepared by a catalytic pyrolysis method were considered as active electrode materials
for the storage of energy in supercapacitors. Due to their unique mesoporosity, this material has a high ability for the accumulation of charges in the
electrode/electrolyte interface. Electrochemical capacitors based on carbon nanotube/nickel oxide composite electrodes were developed through the
electrochemical deposition of nickel oxide on the nanotube electrode. The value of capacitance obtained from nanotubes modified by nickel oxide
reaches 52F/g. The self-discharge rate of this supercapacitor is much lower than that of the supercapacitor composed of carbon nanotube electrode.

Key words: carbon nanotube, nickel oxide, supercapacitor, electrochemical capacitor

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