| 摘要 |
A nickel metal hydride battery includes particles of hydrogen storage alloys in the negative electrode. Such hydrogen storage alloys have a composition expressed by a general formula: (LaaSmbAc)1-wMgwNixAlyTz. In the formula, A and T denote at least one element selected from the groups consisting of: Pr, Nd, and the like; and V, Nb, and the like, respectively, the subscripts a, b, and c satisfy the relationship given by: a>0; b>0; 0.1>c>=0; and a+b+c=1, and the subscripts w, x, y, and z fall within the range given by: 0.1<w<=1; 0.05<=y<=0.35; 0<=z<=0.5; and 3.2<=x+y+z<=3.8.
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