Active mixed nickel hydroxide cathode material for alkaline storage batteries and process for its production
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United States of America Patent
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Issued Date -
Oct 6, 2005
app pub date -
Mar 23, 2005
filing date -
Sep 28, 2002
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Abstract
A mixed nickel hydroxide cathode material for use in alkaline storage batteries and having a bimodal particle size distribution includes a main population of particles and a secondary population of particles. The main population has a median mass-based particle size distribution value, derived from laser particle analyses, of between 5 .mu.m and 25 .mu.m. The secondary population has a median mass-based particle size distribution value, derived from laser particle analyses, of between 0.3 .mu.m and 3 .mu.m. The main population is present in the mixed nickel hydroxide cathode material in a proportion of between 70% and 96% by mass.
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