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Nanocrystalline Ni-Mo alloys and their application in electrocatalysis

Published online by Cambridge University Press:  03 March 2011

R. Schulz ,
J.Y. Huot ,
M.L. Trudeau ,
L. Dignard-Bailey ,
Z.H. Yan ,
S. Jin ,
A. Lamarre ,
E. Ghali  and
A. Van Neste
R. Schulz
Affiliation:
Technologie des Matériaux, Institut de Recherche d'Hydro-Québec, Varennes, Québec, J3X ISI, Canada
J.Y. Huot
Affiliation:
Technologie des Matériaux, Institut de Recherche d'Hydro-Québec, Varennes, Québec, J3X ISI, Canada
M.L. Trudeau
Affiliation:
Technologie des Matériaux, Institut de Recherche d'Hydro-Québec, Varennes, Québec, J3X ISI, Canada
L. Dignard-Bailey
Affiliation:
Technologie des Matériaux, Institut de Recherche d'Hydro-Québec, Varennes, Québec, J3X ISI, Canada
Z.H. Yan
Affiliation:
Technologie des Matériaux, Institut de Recherche d'Hydro-Québec, Varennes, Québec, J3X ISI, Canada
S. Jin
Affiliation:
Département de Mines et Métallurgie, Université Laval, Ste-Foy, Québec, G1K 7P4, Canada
A. Lamarre
Affiliation:
Département de Mines et Métallurgie, Université Laval, Ste-Foy, Québec, G1K 7P4, Canada
E. Ghali
Affiliation:
Département de Mines et Métallurgie, Université Laval, Ste-Foy, Québec, G1K 7P4, Canada
A. Van Neste
Affiliation:
Département de Mines et Métallurgie, Université Laval, Ste-Foy, Québec, G1K 7P4, Canada
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Abstract

The structural and electrocatalytic properties of metastable Ni-Mo alloys have been investigated for the hydrogen evolution reaction in alkaline solutions. Amorphous and nanocrystalline phases have been prepared by mechanically alloying the elemental components under various milling conditions. Fcc nanocrystals are formed when the Mo concentration is smaller than 30 at. %. The nanocrystalline state becomes unstable with respect to the amorphous phase when the Mo content in the solid solution exceeds 30 at. %. The electroactive phase for the hydrogen evolution reaction in alkaline solutions is the nanocrystalline supersaturated solid solution. The presence of oxygen during the milling process improves the properties of the alloys.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 11 , November 1994 , pp. 2998 - 3008
Copyright
Copyright © Materials Research Society 1994

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