Patent ID: 7338632
Filing Date: 2008-03-04
Classification: H01M,Y02E,Y02P,Y10S

Abstract:
1. A hydrogen-storing alloy electrode comprising: first hydrogen-storing alloy particles having composition expressed by general expression (I): where A1 represents at least one element selected from a group consisting of Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ca, Sr, Sc, Y, Ti, Zr and Hf; T1 represents at least one element selected from a group consisting of V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Al, Ga, Zn, Sn, In, Cu, Si, P and B; a1, b1, c1, d1 and e1 are in the range of 0<a1≦0.25, 0≦b1, 0≦c1, 0≦d1 and 0≦e1 and satisfy the relation a1+b1+c1+d1+e1=1; and x, y and z are in the range of 0<x<1, 0≦y≦0.5 and 2.5≦z≦4.5; and second hydrogen-storing alloy particles having composition expressed by general expression (II): where A2 represents at least one element selected from a group consisting of Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ca, Sr, Sc, Y, Ti, Zr and Hf; T 2 represents at least one element selected from a group consisting of V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Al, Ga, Zn, Sn, In, Cu, Si, P and B; a2, b2, c2, d2 and e2 are in the range of 0≦a2, 0≦b2, 0.01≦c2, 0.01≦d2 and 0≦e2 and satisfy the relation a2+b2+c2+d2+e2=1; and f and i are in the range of 0≦f≦1 and 4.5≦i≦5.5.