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Citation: Ma Jie, Jiang Xiong. Study of Kinetics of Hydrogen Evolution Reactions by AC Impedance Technique[J]. Chinese Journal of Applied Chemistry, ;1995, 12(6): 25-28. shu

Study of Kinetics of Hydrogen Evolution Reactions by AC Impedance Technique

Ma Jie ¹ ,
Jiang Xiong ²

1.
Department of Chemistry, Capital Normal University, Beijing 100037;
2.
Department of Chemistry, South China Normal University, Guangzhou

Received Date: 6 February 1995
Revised Date: 15 May 1995

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 (1)/(R_ct) plot to zero overpotential, kinetic parameters such as i₀,b and a can be obtained which are in fairly good agreement with those obtained by polarization method. This approach can also be used to determine the rate determining step of a complicated reaction involving hydrogen desorption.
- hydrogen evolution reaction,
- kinetic parameter,
- ac impedance
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