US 11,811,049 B2
Carbon-based fiber sheet and lithium-sulfur battery including same
Yun Kyoung Kim, Daejeon (KR); Taek Gyoung Kim, Daejeon (KR); Kwonnam Sohn, Daejeon (KR); Doo Kyung Yang, Daejeon (KR); and Mira Im, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG CHEM, LTD., Seoul (KR)
Filed on Dec. 8, 2020, as Appl. No. 17/115,016.
Application 17/115,016 is a division of application No. 16/060,660, abandoned, previously published as PCT/KR2017/003155, filed on Mar. 23, 2017.
Claims priority of application No. 10-2016-0068855 (KR), filed on Jun. 2, 2016; and application No. 10-2017-0031126 (KR), filed on Mar. 13, 2017.
Prior Publication US 2021/0098775 A1, Apr. 1, 2021
Int. Cl. H01M 4/133 (2010.01); D01F 9/20 (2006.01); D01F 9/22 (2006.01); H01M 10/052 (2010.01); D01D 5/00 (2006.01); H01M 50/44 (2021.01); H01M 50/403 (2021.01); H01M 50/431 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 4/36 (2006.01); H01M 4/136 (2010.01); D06M 23/06 (2006.01); D06M 13/322 (2006.01); D01D 5/20 (2006.01); D01F 9/145 (2006.01); D04H 1/4242 (2012.01); D04H 1/728 (2012.01); H01M 4/58 (2010.01); H01M 4/583 (2010.01); H01M 4/80 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/133 (2013.01) [D01D 5/003 (2013.01); D01D 5/0038 (2013.01); D01D 5/20 (2013.01); D01F 9/145 (2013.01); D01F 9/20 (2013.01); D01F 9/22 (2013.01); D04H 1/4242 (2013.01); D04H 1/728 (2013.01); D06M 13/322 (2013.01); D06M 23/06 (2013.01); H01M 4/136 (2013.01); H01M 4/366 (2013.01); H01M 4/583 (2013.01); H01M 4/5815 (2013.01); H01M 4/806 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 50/403 (2021.01); H01M 50/431 (2021.01); H01M 50/44 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 2220/20 (2013.01); Y02E 60/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A lithium-sulfur battery comprising:
a positive electrode;
a negative electrode;
a separator interposed between the positive electrode and the negative electrode;
a carbon-based fiber sheet interposed between the positive electrode and the separator; and
an electrolyte impregnated thereinto,
wherein the carbon-based fiber sheet is doped with nitrogen at a concentration of 20% to 30% by weight based on a total weight of the carbon-based fiber sheet,
wherein the carbon-based fiber sheet is cloth, and
wherein the carbon-based fiber sheet has a thickness of 0.1 μm to 50 μm.