Hydrogen storage alloy and nickel-metal hydride storage battery

Details Hydrogen storage alloy and nickel-metal hydride storage battery Hydrogen storage alloy and nickel-metal hydride storage battery

1995-02-23

1996-04-30

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Fluid active material or two-fluid electrolyte combination...

429218, 420455, 420580, 420900, H01M 438

Patent

active

055123856

ABSTRACT:
A hydrogen storage alloy for negative electrodes in an alkaline storage battery is disclosed. The alloy is represented by the general formula MmNi.sub.x M.sub.y, wherein Mm is a misch metal or a mixture of rare earth elements, and M is at least one element selected from the group consisting of Al, Mn, Co, Cu, Fe, Cr, Zr, Ti and V and wherein 5.0.gtoreq.x +y.gtoreq.5.5, and has a microstructure comprising a phase composed of a crystal structure of CaCu.sub.5 type and is capable of absorbing and desorbing hydrogen in a reversible manner, and at least one phase consisting mainly of an element or elements other than Mm, and incapable of storing hydrogen.

REFERENCES:
patent: 4396576 (1983-08-01), Osumi et al.
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patent: 5096665 (1992-03-01), Fujitani et al.
patent: 5242656 (1993-09-01), Zhang et al.
patent: 5284619 (1994-02-01), Hazama
patent: 5290509 (1994-03-01), Furukawa et al.
patent: 5376474 (1994-12-01), Tadokoro et al.

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