Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (08): 750-753.doi: 10.3866/PKU.WHXB20020816

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Electrochemical Performance of RuO2/Active Carbon Composite Electrodes

Wang Xiao-Feng;Wang Da-Zhi;Liang Ji;Liu Qing-Guo   

  1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084;Laboratory on Solid Electrolyte, Beijing Science and Technology University, Beijing 100083
  • Received:2001-11-28 Revised:2002-03-04 Published:2002-08-15
  • Contact: Wang Xiao-Feng

Abstract: Supercapacitors are playing great roles in research-and-development field of power engineering as a new energy store device. The porous carbon material developed in our laboratory exhibits perfect physical structure and properties. Its good electrochemical performances were confirmed by the experiment of CV and alternating current impedance analysis etc. The specific capacitance of active carbon was 172 F•g-1 at the 20 mA•cm-2 current density discharge. The RuO2/active carbon composite electrode was prepared and the specific capacitance amounts to 359 F•g-1,electrochemical performance of supercapacitor composed of RuO2/active carbon composite electrode and the “pseudo-capacitance” characteristic of ruthenium oxide was discussed in detail in this paper

Key words: Super-capacitor, Double layer capacitor, Active carbon, Pseudo-capacitance, Ruthenium oxide