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RuO2·xH2O/AC复合电极及混合型超级电容器的性能研究

张莉; 宋金岩; 邹积岩   

  1. 大连理工大学电气工程与应用电子技术系, 大连 116024
  • 收稿日期:2004-05-10 修回日期:2004-07-01 出版日期:2005-05-20 网络出版日期:2005-05-20

RuO2·xH2O/AC Composite Electrode and Properties of Super-capacitors

ZHANG Li; SONG Jin-Yan; ZOU Ji-Yan   

  1. Department of Electrical and Electronics Engineering; Dalian University of Technology; Dalian 116024; China
  • Received:2004-05-10 Revised:2004-07-01 Published:2005-05-20 Online:2005-05-20

摘要: 用Sol-Gel法制备RuO2·xH2O,并进一步制备了RuO2·xH2O/活性碳复合电极. 针对超级电容器单元工作电压低的问题,研制了一种混合型超级电容器.该电容器是由金属钽阳极、Ta2O5阳极电介质、38wt%的硫酸电解质溶液和RuO2·xH2O/AC阴极组成.组装的超级电容器样品的参数为50V、2.1mF,储能密度为1.48J/cm3.实验结果表明,该电容器具有较高的储能密度和良好的阻抗特性,可以满足脉冲功率技术的要求.

关键词: 超级电容器, 二氧化钌, 比电容, 阻抗特性

Abstract: RuO2·xH2O/AC composite electrode, an ideal electrode of super-capacitors, was prepared. For super-capacitors used usually having lower working voltage of super-capacitors, a newly hybrid super-capacitor was developed. The capacitor was composed of a tantalum metal anode, Ta2O5 dielectric, 38wt% H2SO4 electrolyte solution and RuO2·xH2O /AC cathode. Test results show that the parameters of the hybrid super-capacitor are 50V, 2.1mF, the storage energy density is 1.48J/cm3, showing that it has the high storage energy density and good impedance performance and can be used in pulse power systems.

Key words: super-capacitor, RuO2·xH2O, specific capacitance, impedance performance

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