US 11,721,810 B2
Electrode for lithium secondary battery and lithium secondary battery including the same
Won Kyung Shin, Daejeon (KR); Kyoung Ho Ahn, Daejeon (KR); Chul Haeng Lee, Daejeon (KR); and Jung Hoon Lee, Daejeon (KR)
Assigned to LG Energy Solution, Ltd.
Appl. No. 16/768,352
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Mar. 25, 2019, PCT No. PCT/KR2019/003461
§ 371(c)(1), (2) Date May 29, 2020,
PCT Pub. No. WO2019/194445, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 10-2018-0039365 (KR), filed on Apr. 4, 2018.
Prior Publication US 2020/0365905 A1, Nov. 19, 2020
Int. Cl. H01M 10/0565 (2010.01); H01M 4/64 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/13 (2010.01); H01M 4/02 (2006.01); H01M 10/0562 (2010.01)
CPC H01M 4/64 (2013.01) [H01M 4/13 (2013.01); H01M 4/621 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01); H01M 10/0562 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0082 (2013.01)] 12 Claims
 
1. A lithium secondary battery comprising an electrode and a gel polymer electrolyte,
wherein the electrode comprises an electrode current collector; and an electrode active material layer which is formed on one surface of the electrode current collector and includes an electrode active material and an organic binder containing an ethylenically unsaturated group and a main chain or a side chain, wherein the ethylenically unsaturated group is substituted into the main chain or the side chain, and the main chain or the side chain comprises a unit containing at least one selected from an alkylene group having 1 to 5 carbon atoms, which is substituted with at least one halogen element, an alkylene oxide group having 1 to 5 carbon atoms, which is substituted with at least one halogen element, an imide group, or celluloid, and
the gel polymer electrolyte comprises a polymer network having a three-dimensional structure formed by a radical polymerization of an oligomer containing a (meth)acrylate group wherein the oligomer is bonded with the organic binder.