US 12,394,865 B2
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 Sep. 25, 2023, as Appl. No. 18/473,286.
Application 18/473,286 is a division of application No. 18/331,449, filed on Jun. 8, 2023, granted, now 11,811,090.
Claims priority of application No. 10-2022-0070370 (KR), filed on Jun. 9, 2022.
Prior Publication US 2024/0021955 A1, Jan. 18, 2024
Int. Cl. H01M 50/446 (2021.01); H01M 10/0525 (2010.01); H01M 50/403 (2021.01); H01M 50/449 (2021.01)
CPC H01M 50/446 (2021.01) [H01M 10/0525 (2013.01); H01M 50/403 (2021.01); H01M 50/449 (2021.01)] 13 Claims
 
1. A separator comprising:
a porous substrate;
an inorganic particle layer provided on at least one surface of the porous substrate; and
a heat fusion layer provided on at least one surface of the inorganic particle layer,
wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound,
wherein the heat fusion layer includes an acrylic particulate binder,
wherein a surface gloss value at 600 of a surface of the heat fusion layer is 20 GU or more.