| 摘要 |
Hydrogen storage alloy has a composition expressed by a general formula (LaaNdb"A"c"D"d)1-wMgwNixAly"T"z, where "A", "D" and "T" represent at least one element selected from a group consisting of Sm and Gd, a group consisting of Pr, Eu, etc., and a group of consisting of V, Nb, etc., respectively; subscripts a, b, c and d satisfy relationship shown by a>=0, b>=0, c>0, 0.1>d>=0, and a+b+c+d=1; and subscripts w, x, y and z fall in a range shown by 0<w<=0.25, 0.05<=y<=0.35, 0<=z<=0.5, and 3.15<=x+y+z<=3.35.
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