Active material of hydrogen storage alloy electrode

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

1993-07-15

1994-10-25

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Sealed cell having gas prevention or elimation means

Prevention or elimination means is one of the cell...

429101, 429223, 429229, 428655, 428656, 428680, 420900, H01M 402

Patent

active

053588002

ABSTRACT:
This invention relates to a hydrogen storage active material comprising an alloy having the formula MmNi.sub.5-x-y-z Zn.sub.x Q.sub.y R.sub.z, in which Q.dbd.Al, Ca and Sr, R.dbd.Li, Na and K, 0<x.ltoreq.1, 0<y.ltoreq.0.8 and 0<z.ltoreq.1. 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 storage alloy electrode formed is increased significantly while the cost is greatly reduced by employing Zn.

REFERENCES:
patent: 4623597 (1986-11-01), Sopru et al.
patent: 4952465 (1990-08-01), Harris et al.
patent: 4981741 (1991-01-01), Kawata et al.
patent: 5242656 (1993-09-01), Zhang et al.

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