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):
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.
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