Study of Kinetics of Hydrogen Evolution Reactions by AC Impedance Technique

Chinese Journal of Applied Chemistry ›› 1995, Vol. 0 ›› Issue (6): 25-28.

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Study of Kinetics of Hydrogen Evolution Reactions by AC Impedance Technique

Ma Jie¹, Jiang Xiong²

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

Abstract

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 (R_ct)at various overpotentials (η)and extrapolation of the linear η vs.log1/R_ct 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

Ma Jie, Jiang Xiong. Study of Kinetics of Hydrogen Evolution Reactions by AC Impedance Technique[J]. Chinese Journal of Applied Chemistry, 1995, 0(6): 25-28.

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Study of Kinetics of Hydrogen Evolution Reactions by AC Impedance Technique

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