Title:
SEPARATOR FOR SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/226251
Kind Code:
A1
Abstract:
An embodiment provides a separator for a secondary battery, a manufacturing method therefor, and a lithium secondary battery comprising same, the separator comprising: a porous substrate; and a coating layer comprising a plurality of ring patterns on at least one surface of the porous substrate, wherein: the ring patterns contain a plurality of polymer microparticles; the ring patterns are separated at regular intervals; the particle diameter of the ring patterns is 10 ㎛ to 200 ㎛; and rings of the ring patterns have a width (ring thickness) of 0.2 ㎛ to 1.5 ㎛.
Inventors:
CHO JAEHYUN (KR)
KIM BYUNG-SOO (KR)
KIM BYUNG-SOO (KR)
Application Number:
PCT/KR2019/017516
Publication Date:
November 12, 2020
Filing Date:
December 11, 2019
Export Citation:
Assignee:
SAMSUNG SDI CO LTD (KR)
International Classes:
C08J9/36; C09D127/16; C09D133/08; H01M10/052; H01M50/443; H01M50/489
Foreign References:
| KR20160057345A | 2016-05-23 | |||
| KR20140066786A | 2014-06-02 | |||
| KR20150057480A | 2015-05-28 | |||
| JP2018147578A | 2018-09-20 | |||
| KR101887603B1 | 2018-08-10 |
Attorney, Agent or Firm:
PANKOREA PATENT AND LAW FIRM (KR)
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