The hydrogen storage properties of a novel Mg 2 Ni alloy powder prepared with a mechanical grinding method were investigated. This alloy powder was transformed to an amorphous‐like state by this treatment. As a result, an electrode of this alloy shows a large discharge capacity (750 mAh/g) which is 2.5 times higher than that of AB 5 ‐type alloys. This significant improvement of hydrogen storage properties seems to be achieved by the increase in the crystal boundary and a heterogeneous strain in this alloy. The hydrogen equilibrium pressure of this alloy increased markedly.
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Kohno et al. (1996) studied this question.
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