The hydrogen evolution reaction on codeposited Ni-hydrogen storage intermetallic particles in alkaline medium
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/11/2000
|
Resumo |
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 B.V. Ltd. All rights reserved. |
Formato |
1051-1058 |
Identificador |
http://dx.doi.org/10.1016/S0360-3199(00)00026-4 International Journal of Hydrogen Energy. Oxford: Pergamon-Elsevier B.V., v. 25, n. 11, p. 1051-1058, 2000. 0360-3199 http://hdl.handle.net/11449/32496 10.1016/S0360-3199(00)00026-4 WOS:000089397900005 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
International Journal of Hydrogen Energy |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |