Patent ID: 6682609
Filing Date: 2004-01-27
Classification: H01M,Y02E,Y10S

Abstract:
A hydrogen-absorbing alloy, which comprises:a hydrogen-absorbing alloy powder having a composition represented by the following formula (IV): Mg2âˆ’xM2xM1yâ€ƒâ€ƒ(IV) wherein M2 is at least one element selected from the group consisting of B, Be, Y, Pd, Ti, Zr, Hf, Th, V, Nb, Ta, Pa, and Al, M1 is Ni, x is defined as 0&lE;x&lE;1.0, and y is defined as 0.50.01 to 50% by volume of at least one powdered additive having an average diameter of from &gE;0.001 &mgr;m to &lE;0.8 &mgr;m, wherein said at least one powdered additive is dispersed in said hydrogen-absorbing alloy powder and is selected from the group consisting of the following (a), (b) and (c): (a) at least one element selected from the group consisting of Group Lk elements, Group IIA elements, Group IIIA elements, Group IVA elements, Group VA elements, Group VIA elements, Group VIIA elements, Group VIIIA elements, Group IB elements, Group IIB elements, Group IIIB elements, Group IVB elements, Group VB elements and Group VIB elements; (b) an alloy formed of any combination of the elements defined in (a); and (c) an oxide of any of the elements defined in (a).