Published July 2005 | Version v1
Journal article

Kinetic study of hydrogen evolution reaction on Ni30 Mo70, Co30Mo70, Co30Ni70 and Co10Ni20Mo70 alloy electrodes

  • 1. Instituto Mexicano del Petroleo, Programa de Tratamiento de Crudo Maya, Avenida Eje Central Lazaro Cardenas No.152, Col. San Bartolo Atepehuacan, 07730 Mexico, D. F. (Mexico)
  • 2. Instituto Politecnico Nacional, Departamento de Metalurgia y Materiales, A.P. 75-876, 07300 Mexico, D. F. (Mexico)

Description

The hydrogen evolution reaction on nanocrystalline Ni30Mo70, Co30Mo70, Co30Ni70, and Co10Ni20Mo70, metallic powders prepared by mechanical alloying was investigated with linear polarization and ac impedance methods, in 30 wt.% KOH aqueous solution at room temperature. The formation process and structural properties of these nanocrystalline materials were characterized by X-ray diffraction and transmission electron microscopy. Alloyed powders showed the presence of two phases: an fcc solid solution and intermetallic compounds of Ni, Co and Mo. Based on polarization and ac impedance measurements, an improved electrocatalytic activity for hydrogen evolution reaction was observed in mechanically alloyed Co30Ni70 powders, which is slightly higher than milled metallic Ni powders

Additional details

Identifiers

DOI
10.1016/j.matchar.2005.03.003;
PII
S1044-5803(05)00102-6;

Publishing Information

Journal Title
Materials Characterization
Journal Volume
55
Journal Issue
1
Journal Page Range
p. 83-91
ISSN
1044-5803
CODEN
MACHEX

Optional Information

Copyright
Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.