| abstract |
PROBLEM TO BE SOLVED: To provide an excellent cycle characteristic in which an active material can be sufficiently bound to a current collector, and the active material does not fall off from the current collector as the charge / discharge cycle progresses, and the battery performance does not deteriorate. A binder capable of obtaining a secondary battery is provided. A secondary battery comprising a polyolefin resin (A) containing an unsaturated carboxylic acid component (A1), an ethylene component (A2), and an acrylic ester or methacrylic ester component (A3). binder. [Selection figure] None |