Coated open-celled microporous membranes
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United States of America Patent
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Nov 3, 1981
Grant Date -
N/A
app pub date -
Feb 27, 1980
filing date -
Feb 27, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a microporous membrane having deposited on at least one surface thereof a porous, uniform coating of a low hydrogen over-potential material. The coated microporous membrane is particularly suited for use as a battery separator in a rechargeable zinc electrode containing battery, which is resistant to penetration by zinc dendrites and is capable of increasing the uniformity of current density upon recharging of the battery. A battery employing said coated microporous membrane as a battery separator as well as a process for using said coated microporous membrane is also provided.
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