物理化学学报 >> 1990, Vol. 6 >> Issue (02): 159 -162 .doi: 10.3866/PKU.WHXB19900207

研究论文 上一篇    下一篇

RuO2电极伏安特性

崔成强; 张瀛洲; 周绍民   

  1. 厦门大学化学系,物理化学研究所
  • 收稿日期:1988-07-05 修回日期:1989-03-22 发布日期:1990-04-15
  • 通讯作者: 崔成强

Voltammetric Characteristics of RuO2 Electrode

Cui Cheng-Qiang; Zhang Ying-Zhou; Zhou Shao-Min   

  1. Department of Chemistry and Institute of Physical Chemistry, Xiamen University
  • Received:1988-07-05 Revised:1989-03-22 Published:1990-04-15
  • Contact: Cui Cheng-Qiang

摘要: 本文用循环伏安法和微分脉冲极谱法研究RuO_2电极的优安特性。结果表明, 在0.2~0.8 V电位区存在两个氧化还原反应;
RuOOH<=>RuO_2+H~+e 和 RuO_2+H_2O<=>RuO_3_2H~++2e
而不是一个氧化还原反应(RU(Ⅲ)→Ru(Ⅳ)); 且电极的析氧活性中心为氧结构空位, 它的消失导致电极的失活。

Abstract: The voltammetric characteristics of RuO_2 electrode has been studied by means of cyclic voltammetry and pulse polarography. In the potential range of 0.2-0.8 V, there are two redox reactions as follows:
RuOOH<+>RuO_2+H~++e
RuO_2+H_2O<=>RuO_3+2H~++2e
but not one redox reaction to turn Ru~(3+) into Ru~(4+).
The oxygen-deficient structures are the active sites whose disappearance results in the deactivation of the electrode.