Patent ID: 7678502

Claim:
An alkaline storage cell comprising: a positive electrode; an alkaline electrolyte; and a negative electrode containing a hydrogen storage alloy, the hydrogen storage alloy having a composition expressed by a general expression: ((PrNd) α Ln 1-α ) 1-β Mg β Ni γ-δ-ε Al δ T ε (where Ln represents at least one element chosen from a group consisting of La, Ce, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ca, Sr, Sc, Y, Ti, Zr and Hf, T represents at least one element chosen from a group consisting of V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Zn, Ga, Sn, In, Cu, Si, P and B, and subscripts α, β, γ, δ and ε represent numerical values which satisfy 0.7<α≦1, 0.08<β<12, 3.0≦γ≦4.2, 0.15≦δ≦0.30 and 0≦ε≦0.20.