Alkaline storage cell
AssigneeSanyo Electric Co., Ltd.
InventorsTakahiro ENDO, Masaru KIHARA, Akira SAGUCHI
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Abstract
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.
Claims3
An alkaline storage cell comprising:
- a positive electrode;
- a separator;
- an electrolyte;
- and
- a negative electrode containing a rare earth-Mg—Ni hydrogen storage alloy, the rare earth-Mg—Ni hydrogen storage alloy having a composition expressed by a general formula:
- (AlαLn1-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, Pm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ca, Sr, Sc, Y, Ti, Zr and Hf, T represents at least one element selected from the 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 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.
Dependencies are inferred from the claim text.