Title:
SEPARATOR FOR SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/059173
Kind Code:
A1
Abstract:
A separator for a secondary battery according to the present invention comprises: a separator substrate having a porous structure and made of a polymer material, and a coating layer coated on at least one surface of the separator substrate, wherein the coating layer includes a crystalline binder and an amorphous binder that are miscible with each other, the crystalline binder includes a first crystalline binder and a second crystalline binder, and the content of the amorphous binder is 2% by weight or more and 5% by weight or less, based on the total weight of the solid content of the coating layer, and thus resistance in the separator coating layer is reduced and ionic conductivity is improved.
Inventors:
KIM JI EUN (KR)
BAE DONG HUN (KR)
SHIN HWAN HO (KR)
SHIN JIN YOUNG (KR)
YOON YEO JU (KR)
BAE DONG HUN (KR)
SHIN HWAN HO (KR)
SHIN JIN YOUNG (KR)
YOON YEO JU (KR)
Application Number:
PCT/KR2022/095127
Publication Date:
April 13, 2023
Filing Date:
October 06, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M50/449; H01M4/62; H01M10/058; H01M50/414; H01M50/446
Foreign References:
| KR20160118966A | 2016-10-12 | |||
| KR20070012057A | 2007-01-25 | |||
| JP6738339B2 | 2020-08-12 | |||
| JP2018101639A | 2018-06-28 | |||
| KR20190087226A | 2019-07-24 | |||
| KR20210132448A | 2021-11-04 | |||
| KR20220127529A | 2022-09-20 | |||
| KR20200034470A | 2020-03-31 | |||
| KR20170138958A | 2017-12-18 |
Attorney, Agent or Firm:
MYUNGRYUN IP & LAW FIRM (KR)
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