Active material of hydrogen storage alloy electrode

Details Active material of hydrogen storage alloy electrode Active material of hydrogen storage alloy electrode

H - Electricity

01

M

H01M 4/24 (2006.01) H01M 4/38 (2006.01) H01M 4/40 (2006.01)

Patent

CA 2100509

Abstract This invention relates to a novel active material of hydrogen storage alloy electrode with the composition of formula MmNi5-x-y-zZnxQyRz, in which Q=Al, Ca and Sr, R=Li, Na and K, O<x<1, O<y<0.8 and O<z<1. In the said alloy powder, an alloy phase of zinc is formed between the surface coating and the alloy base after treatment of the alloy powder by surface plating. As a result, the electrochemical capacity as well as the life of the hydrogen storagealloy electrode formed is increased significantly while the cost is greatly reduced with the substitution of Zn for Co.

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