US 11,811,090 B1
Separator, method of manufacturing separator, and electrochemical device including separator
Won Sub Kwack, Daejeon (KR); Tae Wook Kwon, Daejeon (KR); Heung Taek Bae, Daejeon (KR); and Chang Hee Lee, Daejeon (KR)
Assigned to SK INNOVATION CO., LTD., Seoul (KR); and SK IE TECHNOLOGY CO., LTD., Seoul (KR)
Filed by SK INNOVATION CO., LTD., Seoul (KR); and SK IE TECHNOLOGY CO., LTD., Seoul (KR)
Filed on Jun. 8, 2023, as Appl. No. 18/331,449.
Claims priority of application No. 10-2022-0070370 (KR), filed on Jun. 9, 2022.
Int. Cl. H01M 50/403 (2021.01); H01M 50/446 (2021.01); H01M 50/449 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 50/446 (2021.01) [H01M 10/0525 (2013.01); H01M 50/403 (2021.01); H01M 50/449 (2021.01)] 7 Claims
 
1. A method of manufacturing a separator, the method comprising:
(a) adding inorganic particles and an acid component to an aqueous solution of a silane compound represented by the following Chemical Formula 1 and stirring while injecting CO2 to prepare a slurry;
(b) applying the slurry on at least one surface of a porous substrate to form an inorganic particle layer; and
(c) forming a heat fusion layer on at least one surface of the inorganic particle layer,
wherein a surface gloss value at 60° C. of a surface of the heat fusion layer is 10 GU or more:
AaSi(OR)b  [Chemical Formula 1]
wherein A is hydrogen, a polar functional group, or a C1-C10 alkyl group having a polar functional group, R is independently hydrogen or a C1-C5 alkyl group, a is 0 to 2, b is 2 to 4, and a+b is 4.