STUDY OF ELECTRODE ACTIVITIES TOWARDS THE HYDROGEN EVOLUTION REACTION BY AC-IMPEDANCE SPECTROSCOPY

被引：41
|
作者：
LASIA, A
机构：
[1] Departement de Chimie, Université de Sherbrooke, Sherbrooke
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 1993年 / 18卷 / 07期
关键词：
D O I：
10.1016/0360-3199(93)90174-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrical equivalent models were tested for the description of the hydrogen evolution reaction on various polycrystalline and rough electrodes in alkaline solution. It was found that the model containing the constant phase element best describes the experimental impedance curves, but in some cases the fractal or porous electrode models had to be used. Determination of the surface roughness allowed us to estimate the real electrode activity. It was found that, except for the electrodes containing noble metals, the main contribution to the activity arises from the large surface area.
引用
收藏
页码：557 / 560
页数：4
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