Hydrogen storage alloy for alkaline battery and production...

Details Hydrogen storage alloy for alkaline battery and production... Hydrogen storage alloy for alkaline battery and production...

2008-05-29

2010-11-09

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C423S644000

Reexamination Certificate

active

07829220

ABSTRACT:
To provide a hydrogen storage alloy for an alkaline battery capable of having high performance of power characteristics much more beyond the related-art range, and a production method thereof, as well as an alkaline battery by investigating the constituent ratios of the A2B7-type structure and the A5B19-type structure.The hydrogen storage alloy for an alkaline battery of the present invention includes: an element R selected from the Group IV and the rare earth elements including Y and excluding La; and an element M consisting of at least one of Co, Mn, and Zn. The hydrogen storage alloy is represented by general formula: LaαR1−α−βMgβNiγ−η−εAlηMε(wherein α, β, γ, η, ε satisfy numerical formulae: 0≦α≦0.5, 0.1≦β≦0.2, 3.7≦γ≦3.9, 0.1≦η≦0.3, 0≦ε≦0.2); and the constituent ratio of the A5B19-type structure is 40% or more in the crystal structure thereof.

REFERENCES:
patent: 2006/0254678 (2006-11-01), Sakai et al.
patent: 62-31947 (1987-02-01), None
patent: 2002-164045 (2002-06-01), None

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