Separator for secondary battery, manufacturing method therefor, and lithium secondary battery comprising same
Number of patents in Portfolio can not be more than 2000
United States of America
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Dec 31, 2024
Grant Date -
Jul 28, 2022
app pub date -
Dec 11, 2019
filing date -
Dec 11, 2019
priority date (Note) -
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Abstract
An embodiment provides a separator for a secondary battery, a manufacturing method therefor, and a lithium secondary battery comprising same, the separator including: a porous substrate; and a coating layer including a plurality of ring patterns on at least one surface of the porous substrate, wherein the ring patterns include a plurality of polymer particulates; the ring pattern is spaced apart from each other at regular intervals; a particle diameter of the ring pattern is 10 μm to 200 μm, and a ring of the ring pattern has a width (thickness of the ring) of 0.2 μm to 1.5 μm.
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