| 简介 |
An alkaline storage battery provided with a positive electrode (1), a negative electrode (2), and an alkaline electrolyte solution employs a hydrogen-absorbing alloy containing : at least a rare-earth element, magnesium, nickel, and aluminum, the hydrogen-absorbing alloy being represented by the general formula Ln1-xMgxNiy-a-bAlaMb, where : Ln is at least one element selected from the group consisting of Ti, Zr, and a rare-earth element including Y; M is at least one element selected from the group consisting of V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Ga, Zn, Sn, In, Cu, Si, P, B, and Zr; 0.05≦x≦0.35; 0.05≦a≦0.30; 0≦b≦0.5; 2.8≦y-a-b≦3.9; and the hydrogen-absorbing alloy having a main phase composed of a uniform metal phase with a uniform composition that has an area percentage of 60% or greater. |
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