US 12,170,373 B2
Sulfur-carbon composite, method for preparing same, and lithium secondary battery comprising same
Soohyun Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/257,679
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Oct. 31, 2019, PCT No. PCT/KR2019/014640
§ 371(c)(1), (2) Date Jan. 4, 2021,
PCT Pub. No. WO2020/091478, PCT Pub. Date May 7, 2020.
Claims priority of application No. 10-2018-0132423 (KR), filed on Oct. 31, 2018; and application No. 10-2019-0137949 (KR), filed on Oct. 31, 2019.
Prior Publication US 2021/0119216 A1, Apr. 22, 2021
Int. Cl. H01M 4/62 (2006.01); C08K 3/04 (2006.01); C08K 3/06 (2006.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 10/0565 (2010.01)
CPC H01M 4/624 (2013.01) [C08K 3/041 (2017.05); C08K 3/042 (2017.05); C08K 3/06 (2013.01); H01M 4/362 (2013.01); H01M 4/38 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01); C08K 2201/011 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0082 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A sulfur-carbon composite comprising:
a porous carbon material comprising interior and exterior surfaces coated with a polymer comprising an ion conductive functional group and an electron conductive functional group; and
sulfur present on at least a portion of inside pores and on a surface of the porous carbon material,
wherein the sulfur and the porous carbon material are present in the sulfur-carbon composite in a weight ratio of 9:1 to 7:3; and
wherein the polymer comprising the ion conductive functional group and the electron conductive functional group is a compound of Formula 1 below:

OG Complex Work Unit Chemistry
wherein x and y are ratios of the respective monomers, x is 0 to 1, y is 1-x, and R and R′ are each independently a C1 to C20 hydrocarbon group.