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PROBLEM TO BE SOLVED : To provide a hydrogen storage material excellent in corrosion resistance and durability, and a nickel hydride storage battery excellent in cycle life using the hydrogen storage material. SOLUTION : There is provided a hydrogen storage alloy represented by the following formula. There is provided a nickel hydride storage battery having an anode containing the hydrogen storage alloy. (RE1-a-bSmaMgb)(Ni1-c-dAlcMd)x, where 0.3
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