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无机材料学报

无机材料学报 ›› 2011, Vol. 26 ›› Issue (8): 823-828.DOI: 10.3724/SP.J.1077.2011.00823

• 研究论文 • 上一篇    下一篇

超级电容器用(RuO2/Co3O4)·nH2O复合薄膜电极的制备及其性能

甘卫平, 马贺然, 李 祥   

  1. (中南大学 材料科学与工程学院, 长沙 410083)
  • 收稿日期:2010-10-08 修回日期:2010-11-22 出版日期:2011-08-20 网络出版日期:2011-07-14
  • 作者简介:甘卫平(1955-), 男, 教授. E-mail: gwp@mail.csu.edu.cn
  • 基金资助:

    国家高技术研究发展计划“863”项目(2007AA03Z240)

Preparation and Performance of (RuO2/Co3O4)·nH2O Composite Films in Super Capacitor

GAN Wei-Ping, MA He-Ran, LI Xiang   

  1. (School of Materials Science and Engineering, Central South University, Changsha 410083, China)
  • Received:2010-10-08 Revised:2010-11-22 Published:2011-08-20 Online:2011-07-14
  • Supported by:

    “863” Project Fund of National High Technology Research and Development Program (2007AA03Z240)

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被引次数

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摘要： 配制RuCl3·3H2O和Co(CH3COO)2的异丙醇混合溶液, 采用原位热分解法制备了超级电容器用(RuO2/ Co3O4)·nH2O复合薄膜电极. 借助扫描电镜、X射线衍射仪、红外光谱仪、电化学分析仪等表征薄膜的微观形貌、物相转变以及电化学性能. 结果表明, 当涂覆液中n(Ru3+):n(Co2+)=1:3时, 复合薄膜经260℃热处理3h达到最佳的综合性能, 比电容为569F/g, 附着力为22.4MPa, 内阻仅为0.42Ω, 1000次充放电循环后比电容保持在初始电容量的97.6%.

关键词: 超级电容器, 复合薄膜电极, 比电容, 附着力

Abstract: The (RuO2/Co3O4)·nH2O composite films electrode used in super capacitor was prepared from isopropanol solution of RuCl3·3H2O and Co(CH3COO)2 by in-situ thermal decomposition. The micro-    morphology, phase transformation and electrochemical properties were studied by scanning electron microscope, XRD, infrared spectrometer and electrochemical method, respectively. The results show that, the composite films with n(Rn3+): n(Co2+)=1:3 exhibit the best performances after heat treatment at 260℃ for 3h. The specific capacitance and adhesive force of the composite films are 569F/g and 22.4MPa, respectively. The internal resistance of the composite films is only 0.42Ω and its specific capacitance keep 97.6% of initial capacitance after over 1000 charge-discharge cycles.

Key words: super capacitor, composite films electrode, specific capacitance, adhesion

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