No abstract

4 . -The title alloys are prepared by induction-melting of the elements. Ni is partially substituted with several 3d transition metals or Al. Initial electrochemical capacities reach 350 mAh/g for a Zn containing alloy. However, rapid cyclic degradation occurs for all alloys containing 3d transition elements or Al. Partial or complete substitution of Ca by La reduces the cyclic degradation. Zn and Cu additions tend to stabilize the CaNi 5 structure, whereas Mn, Cr, Fe, Co, and Al additions tend to stabilize the MgCu 2 structure. -(SCHNEIBEL*, J. H.; EASTON, D. S.; HORTON, J. A.; CHAO, B. S.; CANTRELL, L.; LI, Y.; YOUNG, R. C.; TING, J.; J.