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。
A new approach was developed for the kinetic study of hydrogen evolution reac-tion in alkaline solution at inert electrodes.By impedance meastirements of the charge trans-fer resistance(R_(ct))at various overpotentials (η)and extrapolation of the linear η vs.log 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.
出处
《应用化学》
CAS
CSCD
北大核心
1995年第6期25-28,共4页
Chinese Journal of Applied Chemistry
关键词
析氢反应
交流阻抗
反应动力学
hydrogen evolution reaction,kinetic parameter,ac impedance