中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (6): 25-28.

• 研究论文 • 上一篇    下一篇

析氢反应动力学的交流阻抗法研究

马洁1, 蒋雄2   

  1. 1. 首都师范大学化学系, 北京 100037;
    2. 华南师范大学化学系, 广州
  • 收稿日期:1995-02-06 修回日期:1995-05-15 出版日期:1995-12-10 发布日期:1995-12-10

Study of Kinetics of Hydrogen Evolution Reactions by AC Impedance Technique

Ma Jie1, Jiang Xiong2   

  1. 1. Department of Chemistry, Capital Normal University, Beijing 100037;
    2. Department of Chemistry, South China Normal University, Guangzhou
  • Received:1995-02-06 Revised:1995-05-15 Published:1995-12-10 Online:1995-12-10

PDF

597

被引次数

15

摘要： 利用交流阻抗法测定析氢电化学动力学参数,得到与极化曲线法一致的结果,为确定复杂析氢过程速率的决定步骤提供了判据.

关键词: 析氢反应, 动力学参数, 交流阻抗

Abstract: A new approach was developed for the kinetic study of hydrogen evolution reaction in alkaline solution at inert electrodes.By impedance meastirements of the charge trans-fer resistance (Rct)at various overpotentials (η)and extrapolation of the linear η vs.log1/Rct plot to zero overpotential, kinetic parameters such as i0,b and a can be obtained which are infairly good agreement with those obtained by polarization method.This approach can also beused to determine the rate determining step of a complicated reaction involving hydrogendesorption.

Key words: hydrogen evolution reaction, kinetic parameter, ac impedance

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