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Nanocrystalline Ni-Mo alloys and their application in electrocatalysis

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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.

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Authors and Affiliations

  1. Technologie des Matériaux, Institut de Recherche d’Hydro-Québec, Varennes, Québec, J3X ISI, Canada

    R. Schulz, J. Y. Huot, M. L. Trudeau, L. Dignard-Bailey & Z. H. Yan

  2. Département de Mines et Métallurgie, Université Laval, Ste-Foy, Québec, G1K 7P4, Canada

    S. Jin, A. Lamarre, E. Ghali & A. Van Neste

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  1. R. Schulz
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  2. J. Y. Huot
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  3. M. L. Trudeau
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  4. L. Dignard-Bailey
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  5. Z. H. Yan
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  6. S. Jin
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  7. A. Lamarre
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  8. E. Ghali
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  9. A. Van Neste
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Schulz, R., Huot, J.Y., Trudeau, M.L. et al. Nanocrystalline Ni-Mo alloys and their application in electrocatalysis. Journal of Materials Research 9, 2998–3008 (1994). https://doi.org/10.1557/JMR.1994.2998

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  • DOI: https://doi.org/10.1557/JMR.1994.2998

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