Alkaline storage cell
AssigneeSanyo Electric Co., Ltd.
InventorMasaru Kihara
Life of this patent
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Abstract
An alkaline storage cell has a negative electrode containing hydrogen-storing alloy powder, additive powder containing metal zinc or zinc compound, and a binding agent for binding particles of the powders. The hydrogen-storing alloy powder has a composition expressed by a general expression: Ln1-xMgx(Ni1-yTy)z, where Ln represents at least one element chosen from a group consisting of the lanthanoids, 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, Al, Ga, Zn, Sn, In, Cu, Si, P and B, and x, y and z represent numerical values which meet 0<x<1, 0≦y≦0.5 and 2.5≦z≦4.5.
Claims5
An alkaline storage cell comprising an electricity generation set contained in a container, said set including a positive electrode, a negative electrode and an alkaline electrolyte, the negative electrode containing
- hydrogen-storing alloy powder, the hydrogen-storing alloy powder has a composition expressed by a general expression
- Ln1-xMgx(Ni1-yTy)z
- where Ln represents at least one element chosen from a group consisting of La, Ce, Pr, Nd, 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, Al, Ga, Zn, Sn, In, Cu, Si, P and B, and x, y and z represent numerical values which meet 0<x<1, 0≦y≦0.5 and 2.5≦z≦4.5,
- additive powder containing at least one of metal zinc and zinc compound in the range of 2 mass-parts to 5 mass parts relative to 100 mass-parts of hydrogen-storing alloy powder, and
- a binding agent for binding particles of the powders.
Dependencies are inferred from the claim text.