| 简介 |
The negative electrode of an alkaline storage cell contains a rare earth-Mg—Ni hydrogen storage alloy. The rare earth-Mg—Ni hydrogen storage alloy has a composition expressed by a general formula : (AαLn1-α)1-βMgβNiγ-δ-εAlδTε wherein A represents one or more elements selected from the group consisting of Pr, Nd, Sm and Gd and including at least Sm, Ln represents at least one element selected from the group consisting of La, Ce, and the like, T represents at least one element selected from the group consisting of V, Nb, and the like, and subscripts α, β, γ, δ and ε represent numerical values which respectively satisfy 0.4≦α, 0.05<β<0.15, 3.0≦γ≦4.2, 0.15≦δ≦0.30 and 0≦ε≦0.20. |
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