Hydrogen-storing alloy electrode and secondary cell using...

Details Hydrogen-storing alloy electrode and secondary cell using... Hydrogen-storing alloy electrode and secondary cell using...

2005-07-28

2008-03-04

Lawrence, Frank M. (Department: 1797)

Alloys or metallic compositions

Hydrogen storage

C429S218200

Reexamination Certificate

active

07338632

ABSTRACT:
A secondary cell has a hydrogen-storing alloy electrode as a negative-electrode plate26, and the electrode contains first hydrogen-storing alloy particles36and second hydrogen-storing alloy particles37. The first hydrogen-storing alloy particles36has composition expressed by general expression (I) (Laa1Ceb1Prc1Ndd1(Al)el)1−xMgx(Ni1−y(T1)y)z, 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.

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