	US 11,990,641 B2
	Separator having no separator substrate and electrochemical device including the same
Min Ji Kim, Daejeon (KR); Kwan Woo Nam, Daejeon (KR); Kyung Ho Ahn, Daejeon (KR); Je An Lee, Daejeon (KR); Young Bok Kim, Daejeon (KR); Chul Haeng Lee, Daejeon (KR); Jung Hoon Lee, Daejeon (KR); and Sol Ji Park, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 16/640,877
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Oct. 31, 2018, PCT No. PCT/KR2018/013112 § 371(c)(1), (2) Date Feb. 21, 2020, PCT Pub. No. WO2019/088698, PCT Pub. Date May 9, 2019.
Claims priority of application No. 10-2017-0143690 (KR), filed on Oct. 31, 2017; and application No. 10-2018-0131285 (KR), filed on Oct. 30, 2018.
Prior Publication US 2020/0358065 A1, Nov. 12, 2020
Int. Cl. H01M 50/446 (2021.01); H01M 10/052 (2010.01); H01M 50/406 (2021.01)

CPC H01M 50/446 (2021.01) [H01M 10/052 (2013.01); H01M 50/406 (2021.01)]

3 Claims

1. A method of manufacturing a separator comprising:

preparing a slurry comprising inorganic particles, a binder, and a crosslinking agent wherein the slurry does not include a polyolefin substrate,

forming a shape of a separator using the slurry,

conducting a crosslinking reaction at 120° C. to 160° C. to produce a separator, and

drying the separator,

wherein the crosslinking agent comprises a polymer material represented by Formula 1 having a weight average molecular weight of 1,000 to 100,000:

wherein in Formula 1, x is an integer of 1 to 100, y is an integer of 0 to 30, z is an integer of 1 to 1,000, and p is an integer which varies depending on the weight average molecular weight.