Explosion-proof separator for Li-ion secondary batteries
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United States of America Patent
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app pub date -
Jul 22, 2003
filing date -
Nov 1, 2002
priority date (Note) -
Abandoned
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Abstract
A battery separator for a lithium-ion secondary battery is a microporbus membrane with an adjuvant. The microporous membrane is made of a thermoplastic, and has a thickness of 25 .mu.m or less. The adjuvant, in an effective amount, is mixed into the membrane or coated thereon. The adjuvant is a material adapted to reduce or eliminate energy concentrations around the separator. The energy concentration is sufficient to initiate a reaction of the components of the lithium ion secondary battery.
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