Abstract
ABSTRACTAmorphous and nanocrystalline Nil-xMox alloys have been prepared by mechanical alloying of pure Ni and Mo elemental powders in an atmosphere containing various amounts of oxygen. Metastable fcc solid solutions are formed when the Mo content is less than 30 at.%. The amorphization of the supersaturated solid solution occurs when the Mo concentration exceeds 30 at.%. The electrocatalytic properties of the nanocrystalline alloys for the hydrogen evolution reaction in alkaline solutions have been investigated. High electrocatalytic activity is found when the average crystal size is below 10 nm and when the supersaturated solid solution contains some oxygen.
Published Version
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