US 12,191,520 B2
Separator for lithium-sulfur battery, and lithium-sulfur battery comprising same
Myeongseong Kim, Daejeon (KR); and Suenghoon Han, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/605,308
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Apr. 24, 2020, PCT No. PCT/KR2020/005460
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2020/226310, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 10-2019-0052470 (KR), filed on May 3, 2019; and application No. 10-2020-0047143 (KR), filed on Apr. 20, 2020.
Prior Publication US 2022/0200095 A1, Jun. 23, 2022
Int. Cl. H01M 50/431 (2021.01); H01M 10/052 (2010.01); H01M 50/443 (2021.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)
CPC H01M 50/431 (2021.01) [H01M 10/052 (2013.01); H01M 50/443 (2021.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A separator for a lithium-sulfur battery comprising:
a porous substrate; and
an inorganic coating layer present on at least one surface of the porous substrate,
wherein the inorganic coating layer consists of a modified montmorillonite in which cations in montmorillonite are substituted with at least one ion selected from the group consisting of hydrogen ion, lithium ion, potassium ion, rubidium ion, cesium ion, iron ion, manganese ion and nickel ion.