Alloys for use as active material for the negative electrode of an alkaline, rechargeable nickel-metal hydride battery, and process for its production
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United States of America Patent
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Apr 14, 1998
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N/A
app pub date -
Jul 9, 1996
filing date -
Jul 27, 1995
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Abstract
To provide an improved high-temperature cycle lifetime, an alloy for use as active material for the negative electrode of an alkaline, rechargeable nickel-metal hydride battery has the composition Mm.sub.1-u E.sub.u Ni.sub.v Co.sub.w Al.sub.x Mn.sub.y M.sub.z, where Mm is a misch metal including La and Ce, and which can further include Pr, Nd and/or other lanthanides, E is Ti and/or Zr, with 0.01.ltoreq.u.ltoreq.0.1, and M is Fe and/or Cu, with 0.ltoreq.z.ltoreq.0.4, wherein 0.2.ltoreq.w.ltoreq.0.4, 0.3.ltoreq.x.ltoreq.0.5, 0.2.ltoreq.y.ltoreq.0.4, and 4.9.ltoreq.v+w+x+y+z.ltoreq.5.1.
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