US 12,034,156 B2
Sulfur-carbon composite, preparation method therefor, and lithium secondary battery comprising same
Eui Tae Kim, Daejeon (KR); Suenghoon Han, Daejeon (KR); Kwonnam Sohn, Daejeon (KR); and Doo Kyung Yang, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Apr. 11, 2023, as Appl. No. 18/298,720.
Application 18/298,720 is a continuation of application No. 16/646,490, granted, now 11,658,293, previously published as PCT/KR2018/014070, filed on Nov. 16, 2018.
Claims priority of application No. 10-2017-0153249 (KR), filed on Nov. 16, 2017; application No. 10-2018-0022217 (KR), filed on Feb. 23, 2018; and application No. 10-2018-0140659 (KR), filed on Nov. 15, 2018.
Prior Publication US 2024/0021803 A1, Jan. 18, 2024
Int. Cl. H01M 4/38 (2006.01); H01M 4/36 (2006.01); H01M 4/583 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01); H01M 4/62 (2006.01)
CPC H01M 4/38 (2013.01) [H01M 4/362 (2013.01); H01M 4/583 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01); H01M 4/623 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A sulfur-carbon composite comprising:
a porous carbon material; and
sulfur coated on at least a portion of an inside and a surface of the porous carbon material,
wherein a pore volume of the sulfur-carbon composite is 0.04 cm3/g to 0.400 cm3/g and a specific surface area of the sulfur-carbon composite is 4.0 m2/g to 30 m2/g,
wherein the sulfur and the porous carbon material are present in the sulfur-carbon composite in a weight ratio of 7.5:2.5 to 4:6, and
wherein a pore size of the sulfur-carbon composite ranges from 55 nm to 100 nm.