US 12,266,789 B2
Positive electrode active material for lithium-sulfur battery, preparation method thereof and lithium-sulfur battery comprising same
Soohyun Kim, Daejeon (KR); Jong-Chan Lee, Seoul (KR); Kihyun Kim, Daejeon (KR); Kwonnam Sohn, Daejeon (KR); Daun Jeong, Seoul (KR); and Chan Yeong Koong, Seoul (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR); and Seoul National University R&DB Foundation, Seoul (KR)
Appl. No. 17/776,508
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR); and SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul (KR)
PCT Filed Aug. 4, 2021, PCT No. PCT/KR2021/010204
§ 371(c)(1), (2) Date May 12, 2022,
PCT Pub. No. WO2022/035120, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 10-2020-0100684 (KR), filed on Aug. 11, 2020.
Prior Publication US 2022/0393157 A1, Dec. 8, 2022
Int. Cl. H01M 4/36 (2006.01); H01M 4/04 (2006.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/0471 (2013.01); H01M 4/5815 (2013.01); H01M 4/62 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A positive electrode active material, comprising:
a particulate structure having a core-shell structure,
wherein the particulate structure comprises a core part and a shell part covering the whole surface or a part of the surface of the core part, and
wherein the core part comprises a sulfur compound, and the shell part comprises a polythiophene acetic acid-polyethylene glycol graft copolymer.