Separator for lithium secondary battery and lithium secondary battery comprising the same
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United States of America Patent
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Nov 24, 2015
Grant Date -
Sep 6, 2012
app pub date -
May 11, 2012
filing date -
Nov 16, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a separator for a lithium secondary battery and a lithium secondary battery comprising the same. The separator may include a thermoplastic polyolefin-based polymer porous sheet and an aramid-based non-woven fabric sheet stacked on at least one surface of the polyolefin-based polymer porous sheet, wherein the polyolefin-based polymer sheet and the aramid-based non-woven fabric sheet are adhered with an adhesive, and the adhesive loses an adhesive performance at 80° C. or more to separate the two sheets. The separator has a shut-down function and excellent high-temperature shape stability.
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