US 12,155,088 B2
Separator and electrochemical device containing the same
Hye-Jin Kwon, Daejeon (KR); Myeong-Soo Kim, Daejeon (KR); In-Hyouk Sung, Daejeon (KR); Su-Jin Yoon, Daejeon (KR); and Je-An Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Dec. 20, 2022, as Appl. No. 18/084,947.
Application 18/084,947 is a continuation of application No. 16/530,384, filed on Aug. 2, 2019, granted, now 11,575,179.
Application 16/530,384 is a continuation of application No. PCT/KR2018/015724, filed on Dec. 11, 2018.
Claims priority of application No. 10-2017-0169386 (KR), filed on Dec. 11, 2017.
Prior Publication US 2023/0122483 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/44 (2021.01); H01M 4/62 (2006.01); H01M 10/05 (2010.01); H01M 10/0525 (2010.01); H01M 50/446 (2021.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 50/46 (2021.01); H01R 24/64 (2011.01); H01R 24/66 (2011.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01); H04R 1/02 (2006.01); H01R 107/00 (2006.01)
CPC H01M 50/446 (2021.01) [H01M 4/622 (2013.01); H01M 10/0525 (2013.01); H01M 50/451 (2021.01); H01M 50/457 (2021.01); H01M 50/461 (2021.01); H01R 24/64 (2013.01); H01R 24/66 (2013.01); H02J 7/0013 (2013.01); H02J 7/0014 (2013.01); H02J 7/0042 (2013.01); H02J 7/0044 (2013.01); H02J 7/0045 (2013.01); H02J 7/342 (2020.01); H04R 1/028 (2013.01); H01R 2107/00 (2013.01); H02J 7/00 (2013.01); H02J 2207/40 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A separator for an electrochemical device which comprises:
a porous polymer substrate having pores;
a porous coating layer present on at least one surface of the porous polymer substrate, and comprising inorganic particles and a binder polymer disposed partially or totally on a surface of the inorganic particles, wherein the binder polymer connects and fixes the inorganic particles with each other; and
an adhesive layer present on a surface of the porous coating layer, and comprising first adhesive resin particles having an average particle diameter corresponding to 0.8-3 times of an average particle diameter of the inorganic particles and second adhesive resin particles having an average particle diameter corresponding to 0.2-0.6 times of the average particle diameter of the inorganic particles, wherein the first adhesive resin particles are present in an amount of 30-90 wt % based on a total weight of the first adhesive resin particles and the second adhesive resin particles;
wherein the first and second adhesive resin particles independently comprise one or more resin selected from the group consisting of styrene butadiene rubber (SBR), acrylonitrile-butadiene rubber, acrylonitrile-butadiene-styrene rubber, polybutyl acrylate-co-ethylhexyl acrylate, polymethyl methacrylate-co-ethylhexyl acrylate, polyacrylonitrile, polyvinyl chloride, polyvinyl alcohol, and polycyanoacrylate.