RESIN COMPOSITION AND APPLICATION THEREOF, BINDER, ELECTRODE SLURRY, ELECTRODE PLATE, BATTERY, AND ELECTRICAL DEVICE

A resin composition includes a main polymer and a crosslinking agent. The crosslinking agent is represented by Formula (A). Aris an aromatic group containing 6 to 50 ring atoms, each Lis independently selected from one or more of a single bond, a Cto Calkylene, or a dynamic covalent bond group, and each nis independently selected from integers from 1 to 3. A structural unit of the main polymer contains a structure represented by Formula (1). The main polymer contains no aromatic group.