Hydrogen Evolution Reaction on Nanostructures Electrodes—a Scenario on Stepped Silver Surfaces

被引：0
作者：
M. F. Juárez
M. Ávila
A. Ruderman
E. Santos
E. P. M. Leiva
O. A. Oviedo
机构：
[1] Ulm University,Institute of Theoretical Chemistry
[2] Instituto de Física Enrique Gaviola (IFEG-CONICET),Instituto de Investigaciones en Físico
[3] FaMAF-UNC,química de Córdoba (INFIQC
[4] Universidad Nacional de Córdoba,CONICET), Departamento de Química Teórica y Computacional, Facultad de Ciencias Químicas
来源：
Electrocatalysis | 2017年 / 8卷
关键词：
Electrocatalysis; Stepped surfaces; Silver; Hydrogen evolution reaction; DFT; Kinetic; Monte Carlo;
D O I：
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中图分类号：
学科分类号：
摘要：
We have investigated the scenario for the hydrogen evolution reaction at stepped silver surfaces in acid solutions at high overpotentials using a simple kinetic model. Two independent types of sites, at the steps and at the terraces, were considered. The rate constants for the Volmer and Heyrovsky reactions were estimated. Both reactions occur with rate constant about two orders of magnitude larger at step sites than at terrace sites. Calculations of the activation energy for these reactions using our theory of electrocatalysis give similar results.
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页码：587 / 593
页数：6
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