Hydrogen-absorbing alloy for negative electrode

Details Hydrogen-absorbing alloy for negative electrode Hydrogen-absorbing alloy for negative electrode

1994-12-02

1995-11-21

Willis, Jr., Prince

Metal working

Method of mechanical manufacture

Electrical device making

429 59, 429101, 429218, 420900, 420455, H01M 404

Patent

active

054682606

ABSTRACT:
A hydrogen-absorbing alloy electrode having a hydrogen-absorbing alloy in a single crystal system and composed of at least three elements which are coated on a conductive substrate. One of the at least three elements has a density distribution profile with at least two adjacent high density peaks and a lowest density point between the at least two adjacent high density peaks. A density difference between one of the at least two adjacent high density peaks and the lowest density point is not less than about 3.0 wt % and a distance between the two adjacent high density peaks is not less than about 20 .mu.m. The hydrogen-absorbing alloy has a volume of 2 .mu.m.sup.3 and may include an additive selected from a group consisting of Manganese (Mn), Boron (B), Tungsten (W) and Cobalt (co).

REFERENCES:
patent: 4487817 (1984-12-01), Willems et al.
patent: 5008164 (1991-04-01), Furukawa et al.
patent: 5071720 (1991-12-01), Notten
patent: 5135589 (1992-08-01), Fetcenko et al.
patent: 5376474 (1994-12-01), Tadokoro et al.

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