POLYIMIDE-COATED ACTIVE MATERIAL PARTICLES, SLURRY FOR ELECTRODE MATERIAL, NEGATIVE ELECTRODE, BATTERY, AND METHOD FOR PRODUCING POLYIMIDE-COATED ACTIVE MATERIAL PARTICLES

摘要

A polyimide-coated active material particle (21) of the present invention includes an active material particle (23) and a polyimide layer (24) derived from a monomeric polyimide precursor and coated on the active material particle (23). A negative electrode (200) of the present invention includes a current collector (30) and an active material layer (20) including the negative electrode active material particle (21) coated with the polyimide layer (24) derived from a monomeric polyimide precursor, and an aqueous binder (22). With the polyimide-coated active material particle of the present invention, it is possible to suppress the amount of organic solvent used and improve the charge-discharge cycle of the electrode.