Analysis of an unusual behavior of the hydrogen evolution reaction: two Tafelian regions with equal slope

被引：5

作者：

de Chialvo, MRG ^{[1
]}

Chialvo, AC ^{[1
]}

机构：

[1] Univ Nacl Litoral, Fac Ingn Quim, Programa Electroquim Aplicada & Ingn Electroquim, RA-3000 Santa Fe, Argentina

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2002年 / 27卷 / 09期

关键词：

hydrogen evolution reaction; Tafelian behavior; kinetic parameters;

D O I：

10.1016/S0360-3199(01)00184-7

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：

A rather unusual behavior of the hydrogen evolution reaction characterized by the existence of two Tafelian regions at low and high overpotentials, respectively, is analyzed. These regions have the same or very similar slope, but different values of the current density extrapolated at the equilibrium potential. A kinetic interpretation of these systems, based on the Volmer-Heyrovsky-Tafel mechanism, is proposed. Experimental results are correlated and discussed in order to illustrate the derived expressions. (C) 2002 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：871 / 877

页数：7

共 8 条

[1]

de Chialvo MRG, 1998, ELECTROCHIM ACTA, V44, P841

[2]

de Chialvo MRG, 2000, J ELECTROCHEM SOC, V147, P1619

[3]

de Chialvo MRG, 2001, PHYS CHEM CHEM PHYS, V3, P3180

[4] The polarisation resistance, exchange current density and stoichiometric number for the hydrogen evolution reaction: Theoretical aspects [J].