US 12,412,960 B2
Porous separator and lithium secondary battery comprising same
Woongchul Choi, Daejeon (KR); Junghun Choi, Daejeon (KR); Yonghee Kang, Daejeon (KR); Minchul Jang, Daejeon (KR); Suk Il Youn, Daejeon (KR); and Byoungkuk Son, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Apr. 26, 2024, as Appl. No. 18/647,568.
Application 18/647,568 is a continuation of application No. 17/279,070, granted, now 12,002,990, previously published as PCT/KR2019/013361, filed on Oct. 11, 2019.
Claims priority of application No. 10-2018-0122101 (KR), filed on Oct. 12, 2018.
Prior Publication US 2024/0274981 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/457 (2021.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/40 (2006.01); H01M 10/052 (2010.01); H01M 50/434 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)
CPC H01M 50/457 (2021.01) [H01M 4/382 (2013.01); H01M 4/405 (2013.01); H01M 10/052 (2013.01); H01M 50/434 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); H01M 2004/027 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A porous separator comprising:
a porous layer consisting of a plurality of plate-shaped inorganic particles and a first binder polymer positioned on a part or all of a surface of the plate-shaped inorganic particles to connect and fix between the plate-shaped inorganic particles; and
a metal layer disposed on a surface of the porous layer,
wherein the porous separator does not include a polymer other than the first binder polymer.
 
19. A porous separator comprising: a porous layer consisting of a plurality of plate-shaped inorganic particles, a plurality of spherical inorganic particles and a first binder polymer positioned on a part or all of a surface of the plate-shaped inorganic particles to connect and fix between the plate-shaped inorganic particles; and
a metal layer disposed on a surface of the porous layer,
wherein the porous separator does not include a polymer other than the first binder polymer.