US 11,999,872 B2
Separator for lithium-sulfur battery and lithium-sulfur battery including same
Kihyun Kim, Daejeon (KR); Seungbo Yang, Daejeon (KR); Jieun Song, Daejeon (KR); Dongseok Shin, Daejeon (KR); Doo Kyung Yang, Daejeon (KR); and Soohyun Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 16/956,413
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed May 8, 2019, PCT No. PCT/KR2019/005444
§ 371(c)(1), (2) Date Jun. 19, 2020,
PCT Pub. No. WO2019/225884, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. 10-2018-0058853 (KR), filed on May 24, 2018.
Prior Publication US 2020/0395586 A1, Dec. 17, 2020
Int. Cl. C09D 7/61 (2018.01); C09D 179/02 (2006.01); H01M 10/0525 (2010.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); C08K 3/04 (2006.01)
CPC C09D 7/61 (2018.01) [C09D 179/02 (2013.01); H01M 10/0525 (2013.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); C08K 3/04 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A separator for a lithium-sulfur battery comprising:
a porous substrate; and
a coating layer present on at least one surface of the porous substrate,
wherein the coating layer is formed from a composition comprising:
(a) a polymer comprising (i) a main chain, wherein a functional group comprising a non-covalent electron pair is present in the main chain, and (ii) a side chain, wherein an aromatic hydrocarbon group is present in the side chain, and
(b) a graphitic carbon-based compound,
wherein the polymer excludes a dendrimer structure.