US 12,170,383 B2
Separator for electrochemical device comprising a patterned electrode adhesive layer and a method for manufacturing the separator
Joo-Sung Lee, Daejeon (KR); and A-Young Lee, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/053,996
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Jun. 12, 2019, PCT No. PCT/KR2019/007106
§ 371(c)(1), (2) Date Nov. 9, 2020,
PCT Pub. No. WO2019/240500, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 10-2018-0067487 (KR), filed on Jun. 12, 2018.
Prior Publication US 2021/0242538 A1, Aug. 5, 2021
Int. Cl. H01M 50/46 (2021.01); H01M 50/403 (2021.01); H01M 50/409 (2021.01); H01M 50/414 (2021.01); H01M 50/443 (2021.01); H01M 50/463 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)
CPC H01M 50/461 (2021.01) [H01M 50/403 (2021.01); H01M 50/414 (2021.01); H01M 50/463 (2021.01); H01M 50/409 (2021.01); H01M 50/443 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A separator for an electrochemical device, comprising:
a porous polymer substrate; and
an electrode adhesive layer formed on at least one surface of the porous polymer substrate,
wherein the electrode adhesive layer comprises at least two units containing a binder polymer, and the units are separated from each other by a non-coated portion having no electrode adhesive layer,
the separator has a polygonal shape having at least four sides, the polygon has an internal angle larger than 0° and smaller than 180°, the non-coated portion extends from one side (a first side) to another side (a second side) of the separator in a linear shape having a predetermined width, and the first side and the second side are adjoining each other and are linked to each other by a point,
wherein the separator has a rectangular surface shape having an aspect ratio larger than 1,
the separator comprises at least one linear non-coated portion extending from a long side to a short side of the separator, and
the separator does not include a non-coated portion extending from one long side to the other long side of the separator and a non-coated portion extending from one short side to the other short side of the separator.