US 11,742,491 B2
Binder for secondary battery, electrode mixture for secondary battery, electrode for secondary battery and secondary battery
Kazuki Hosoda, Osaka (JP); Takahiro Kitahara, Osaka (JP); Manabu Fujisawa, Osaka (JP); Takashi Iguchi, Osaka (JP); Kazuya Asano, Osaka (JP); and Chihiro Shinoda, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Appl. No. 16/755,436
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
PCT Filed Oct. 2, 2018, PCT No. PCT/JP2018/036824
§ 371(c)(1), (2) Date Apr. 10, 2020,
PCT Pub. No. WO2019/087652, PCT Pub. Date May 9, 2019.
Claims priority of application No. 2017-209270 (JP), filed on Oct. 30, 2017; and application No. 2018-031003 (JP), filed on Feb. 23, 2018.
Prior Publication US 2020/0243862 A1, Jul. 30, 2020
Int. Cl. H01M 4/62 (2006.01); H01M 4/13 (2010.01); H01M 10/05 (2010.01); C08F 214/22 (2006.01); C08F 214/26 (2006.01); C08F 220/04 (2006.01); H01M 4/131 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/623 (2013.01) [C08F 214/22 (2013.01); C08F 214/26 (2013.01); C08F 220/04 (2013.01); H01M 4/131 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01)] 12 Claims
 
1. A binder for a secondary battery, comprising
a fluorine-containing polymer (A); and
polyvinylidene fluoride (B),
the fluorine-containing polymer (A) containing:
a polymerized unit based on vinylidene fluoride;
a polymerized unit based on tetrafluoroethylene; and
a polymerized unit based on a monomer (2-2) represented by the following formula (2-2):

OG Complex Work Unit Chemistry
wherein R5, R6, and R7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R8 is a C1-C8 hydrocarbon group; and Y1 is H or NH4.