Alkaline metal oxide/metal hydride battery
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United States of America Patent
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Apr 14, 1998
Grant Date -
N/A
app pub date -
Apr 5, 1996
filing date -
Apr 6, 1995
priority date (Note) -
Expired
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Abstract
As an active material for its negative electrode, a hydrogen storage alloy for a Ni/H battery has the composition MmNi.sub.v Al.sub.w Mn.sub.x Co.sub.y M.sub.z, where Mm is a misch metal, M is Fe, Cu, or a mixture of Fe and Cu, and where 0.1.ltoreq.z.ltoreq.0.4, 0.2.ltoreq.y.ltoreq.0.4, 0.3.ltoreq.w.ltoreq.0.5, 0.2.ltoreq.x.ltoreq.0.4, and 4.9.ltoreq.v+w+x+y+z.ltoreq.5.1. The partial substitution of Co by M, in conjunction with a special production method including the steps of atomizing the molten alloy, followed by heat-treatment and pulverization, leads to an alloy having a particularly high cycle lifetime and discharge capability.
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