US 11,870,077 B2
Binder composition for secondary battery electrode and electrode mixture
Jung Sup Han, Daejeon (KR); Dong Jo Ryu, Daejeon (KR); Seon Hee Han, Daejeon (KR); Jeong Man Son, Daejeon (KR); Min Ah Kang, Daejeon (KR); and Cheolhoon Choi, Daejeon (KR)
Assigned to LG Chem, Ltd.
Appl. No. 16/967,031
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Nov. 1, 2019, PCT No. PCT/KR2019/014713
§ 371(c)(1), (2) Date Aug. 3, 2020,
PCT Pub. No. WO2020/105902, PCT Pub. Date May 28, 2020.
Claims priority of application No. 10-2018-0143834 (KR), filed on Nov. 20, 2018; and application No. 10-2019-0137546 (KR), filed on Oct. 31, 2019.
Prior Publication US 2021/0036326 A1, Feb. 4, 2021
Int. Cl. H01M 4/62 (2006.01); C08F 236/10 (2006.01); C08K 3/04 (2006.01)
CPC H01M 4/622 (2013.01) [C08F 236/10 (2013.01); C08K 3/04 (2013.01)] 13 Claims
 
1. A binder composition for a secondary battery electrode, the binder composition comprising a copolymer consisting of the following repeating units:
a) a first repeating unit derived from a conjugated diene-based monomer;
b) second repeating units derived from b1) an aromatic vinyl-based monomer and b2) an unsaturated carboxylic acid-based monomer;
c) a third repeating unit consisting of a crosslinked structure of diacetone acrylamide and adipic acid dihydrazide;
wherein the diacetone acrylamide is included in an amount of 0.1 part by weight to 3 parts by weight with respect to total 100 parts by weight of the conjugated diene-based monomer, the aromatic vinyl-based monomer, and the unsaturated carboxylic acid-based monomer, and
the adipic acid dihydrazide is included in an amount of 0.02 parts by weight to 3 parts by weight with respect to total 100 parts by weight of the conjugated diene-based monomer, the aromatic vinyl-based monomer, and the unsaturated carboxylic acid-based monomer.