US 12,438,234 B2
Separator, method of manufacturing separator, and electrochemical device including separator
Yun Bong Kim, Daejeon (KR); Kyu Young Cho, Daejeon (KR); Tae Wook Kwon, Daejeon (KR); and Heung Taek Bae, 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 May 14, 2024, as Appl. No. 18/663,073.
Application 18/663,073 is a division of application No. 18/331,272, filed on Jun. 8, 2023, granted, now 12,015,170.
Claims priority of application No. 10-2022-0070383 (KR), filed on Jun. 9, 2022.
Prior Publication US 2024/0297407 A1, Sep. 5, 2024
Int. Cl. H01M 50/431 (2021.01); H01M 10/052 (2010.01); H01M 50/403 (2021.01); H01M 50/449 (2021.01)
CPC H01M 50/431 (2021.01) [H01M 10/052 (2013.01); H01M 50/403 (2021.01); H01M 50/449 (2021.01)] 9 Claims
 
1. A separator comprising:
a porous substrate; and
an inorganic particle layer formed on at least one surface of the porous substrate and including inorganic particles and a hydrolytic condensate of a silane compound,
wherein a release rate of the inorganic particle layer represented by the following Formula (1) is 70% or more when measured by immersing the separator in a water tank at room temperature and then subjecting the separator to sonication under conditions of a frequency of 40 kHz, an output of 1,000 W, and an application time of 60 seconds:

OG Complex Work Unit Math
wherein
wi is a weight of the separator before the sonication,
wf is a weight of the separator after the sonication, and
wc is a weight of the inorganic particle layer before the sonication.