Binder composition for secondary battery positive electrode, slurry composition for secondary battery positive electrode, secondary battery positive electrode, and secondary battery

摘要: Provided are a binder composition which has high electrolyte resistance characteristics, and secondary battery uses positive electrode using the for high-temperature cycle characteristics. [Solution] The according to present invention contains polymerized unit nitrile group; of (meth) acrylic acid ester; hydrophilic linear alkylene having carbon number at least four. In mixed solvent in volume ratio EC:DEC between ethylene carbonate (EC) diethyl (DEC) 20° C. is 1:2, degree swelling with respect an LiPF 6 dissolved have concentration 1.0 mol/L 100% 500%.