Binder composition for electrochemical element electrode, slurry composition for electrochemical element electrode, electrode for electrochemical element, and electrochemical element

摘要

An object of the present invention is to provide a binder composition for an electrochemical element electrode capable of forming an electrode mixture layer that is excellent in peel strength and loose resistance, and can exhibit high rate characteristics in an electrochemical element. The binder composition for an electrochemical device electrode of the present invention contains a binder and an organic solvent, the binder comprises a particulate polymer A and a polymer B, and the particulate polymer A includes a core portion and an outer surface of the core portion It has a core-shell structure having a shell portion covering at least a part of the shell portion, the glass transition temperature of the polymer constituting the shell portion is -50°C or higher and 20°C or lower, and the polymer B is mixed with the organic solvent at a concentration of 8% by mass. The obtained mixed solution is characterized in that the viscosity at a shear rate of 1 s -1 is 100 mPa·s or more and 10,000 mPa·s or less.