Hermetically-sealed alkaline battery
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United States of America Patent
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Jan 30, 1990
Grant Date -
N/A
app pub date -
Jun 27, 1988
filing date -
Aug 20, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Alkaline Ni/Cd round cells (button cells) which are able to withstand long-term overloading with a relatively high current (five-hour current) for a practically unlimited time and still deliver approximately their rated capacity on discharge with an equal current after 12 months. The button cells of the invention comprise a negative electrode tablet provided with an auxiliary electrode comprising activated carbon integrated in the nickel wire gauze basket and a positive electrode constituted of a material which contains 20 wt. % to 35 wt. % metallic nickel as the second largest component of the mixture after Ni(OH).sub.2, while the otherwide common conductive graphite is absent.
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