Separator for rechargeable lithium battery and rechargeable lithium battery including the same
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United States of America Patent
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Sep 19, 2023
Grant Date -
Oct 21, 2021
app pub date -
Apr 13, 2021
filing date -
Apr 16, 2020
priority date (Note) -
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Abstract
A separator for a rechargeable lithium battery includes a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer is formed from a coating layer composition including an organosilazane compound, inorganic particles, an initiator, and a solvent, the coating layer includes a curable binder of the organosilazane compound and inorganic particles, the curable binder of the organosilazane compound includes a copolymer including a structural unit represented by Chemical Formula 1, a structural unit represented by Chemical Formula 2, and a structural unit represented by Chemical Formula 3, and a nitrogen (N) atom derived from Chemical Formula 1 is greater than about 0 at % and less than about 5 at % (atomic percent) in the coating layer, and a rechargeable lithium battery. Chemical Formula 1 to Chemical Formula 3 are as defined in the specification.
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