ALKALINE STORAGE BATTERY

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PROBLEM TO BE SOLVED : To provide a high-capacity alkaline storage battery having a negative electrode containing a rare-earth-Mg-Ni-based hydrogen storage alloy excelling in corrosion resistance against an alkaline electrolyte and having an excellent cycle characteristic. SOLUTION : The composition of the hydrogen storage alloy included in the negative electrode 4 of this alkaline storage battery is represented by general formula : Ln1-αMgαNiβ-γ-δTγAlδ. In the formula, Ln is at least one kind selected from a group comprising La, Ce and the like; T is at least one kind selected from a group comprising V, Nb and the like; and the subscripts α, β, γ and δ are each a number satisfying 0.05COPYRIGHT : (C)2007, JPO&INPIT