Positive active material for alkaline electrolyte storage battery nickel electrodes
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United States of America Patent
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Sep 24, 2002
Issued Date -
N/A
app pub date -
Aug 23, 2000
filing date -
Mar 6, 1997
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Expired
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Abstract
A positive active material for nickel electrodes of alkaline storage batteries consists of particles of hydroxide containing mainly nickel and covered with a layer of a hydroxide phase based on nickel and yttrium. The proportion of the hydroxide phase is in the range 0.15% to 3% by weight of yttrium expressed as yttrium hydroxide relative to the total weight of particles.
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