The hydrogen evolution reaction on codeposited Ni-hydrogen storage intermetallic particles in alkaline medium

被引：56

作者：

Bocutti, R ^{[1
]}

Saeki, MJ ^{[1
]}

Florentino, AO ^{[1
]}

Oliveira, CLF ^{[1
]}

Angelo, ACD ^{[1
]}

机构：

[1] UNESP, Fac Ciencias, Lab Catalise & Electrocatalise, BR-17033360 Bauru, SP, Brazil

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2000年 / 25卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/S0360-3199(00)00026-4

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：

The hydrogen evolution reaction (HER) was studied on Ni-LaNi5 and Ni-MmNi(3.4)Co(0.8)Al(0.8) electrode materials in 1 mol dm(-3) NaOH solution. The steady-state polarization curves and electrochemical impedance spectroscopy experimental data showed a pronounced improvement in HER kinetics when these electrode materials were used. The electrochemical results are in accordance with the Volmer-Heyrovsky mechanism. The kinetic results indicate a more effective improvement in the Heyrovsky step, suggesting an electrocatalytic synergistic effect of the hyper-electronic character of the Ni and the hypo-electronic character of the rare-earth element on the electrode surface. (C) 2000 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1051 / 1058

页数：8

共 17 条

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