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US 2009/0014100 A1Published application
Method of making hydrogen-absorbing alloy for alkaline storage battery, and alkaline storage battery
AssigneeSanyo Electric Co., Ltd.
InventorsYoshifumi Magari, Jun Ishida, Shigekazu Yasuoka
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Abstract
A hydrogen-absorbing alloy for alkaline storage battery which is produced by a rapid cool using a rapid quenching method and whose component is represented by a general formula Ln1-xMgxNia-b-cAlbZc is used for a negative electrode of an alkaline storage battery.
Claims4
A method of making hydrogen-absorbing alloy for alkaline storage battery, comprising:
- preparing a melt of an alloy composition represented by a general formula Ln1-xMgxNia-b-cAlbZc, where Ln is at least an element selected from rare earth elements including Y and Zr, and Z 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, and B, 0.05≦x<0.25, 2.8≦a≦3.9, 0<b≦0.30, and 0≦c≦0.25;
- rapidly cooling the melt thereby obtaining a solidified alloy composition;
- and then
- heat treating the solidified alloy composition at a temperature which is 25° C. to 70° C. lower than a liquefy beginning temperature Tm of the alloy composition.
1 more element
Dependencies are inferred from the claim text.