Kinetic study of hydrogen evolution reaction on Ni30 Mo70, Co30Mo70, Co30Ni70 and Co10Ni20Mo70 alloy electrodes
Creators
- 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
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37057343
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- AQUEOUS SOLUTIONS; CRYSTALS; ELECTROCATALYSTS; ELECTRODES; EVOLUTION; FCC LATTICES; HYDROGEN; IMPEDANCE; INTERMETALLIC COMPOUNDS; NANOSTRUCTURES; POLARIZATION; POTASSIUM HYDROXIDES; POWDERS; SOLID SOLUTIONS; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALLOYS; CATALYSTS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DIFFRACTION; DISPERSIONS; ELECTRON MICROSCOPY; ELEMENTS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; HYDROXIDES; MICROSCOPY; MIXTURES; NONMETALS; OXYGEN COMPOUNDS; POTASSIUM COMPOUNDS; SCATTERING; SOLUTIONS; TEMPERATURE RANGE
Optional Information
- Copyright
- Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.