US 11,658,339 B2
Composition for gel polymer electrolyte, and gel polymer electrolyte and lithium secondary battery including the same
Kyoung Ho Ahn, Daejeon (KR); Jung Hoon Lee, Daejeon (KR); Jae Won Lee, Daejeon (KR); and Chui Haeng Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 16/638,714
Filed by LG Chern, Ltd., Seoul (KR)
PCT Filed Nov. 28, 2018, PCT No. PCT/KR2018/014837
§ 371(c)(1), (2) Date Feb. 12, 2020,
PCT Pub. No. WO2019/107921, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 10-2017-0160553 (KR), filed on Nov. 28, 2017.
Prior Publication US 2020/0220212 A1, Jul. 9, 2020
Int. Cl. H01M 10/0565 (2010.01); H01M 10/052 (2010.01)
CPC H01M 10/0565 (2013.01) [H01M 10/052 (2013.01); H01M 2300/0085 (2013.01)] 18 Claims
 
1. A composition for a gel polymer electrolyte, comprising:
an oligomer represented by the following Formula 1;
a polymerization initiator;
a non-aqueous solvent; and
a lithium salt:

OG Complex Work Unit Chemistry
wherein in Formula 1,
A is a unit comprising a polycarbonate group,
B and B′ are each independently a unit comprising an amide group,
C and C′ are each independently a unit comprising a (meth)acrylate group, and
m is an integer of 1 to 200;
wherein the unit A is a unit represented by the following Formula A-1 or A-2:

OG Complex Work Unit Chemistry
wherein in Formulae A-1 and A-2, R1, R2 and R3 are each independently a substituted or unsubstituted alkylene group of 1 to 10 carbon atoms, n is an integer of 5 to 3000, and o is 2.