RESIN COMPOSITION, COATING FILM USING SAME, AND ELECTROLYTE

According to the present invention, there can be provided a resin composition, comprising: a polycarbonate resin comprising a constituent unit represented by the following general formula (1):wherein R1 to R4 and R11 to R14 each independently represent hydrogen, fluorine, chlorine, bromine or iodine, etc., a represents an integer of 1 to 1,000, and X represents-S-, etc.; and a carbonate-based organic solvent, wherein the content of the polycarbonate resin in the resin composition is 0.05% to 50% by mass, the content of the carbonate-based organic solvent in the resin composition is 50% to 99.5% by mass, and the total percentage of constituent units represented by the following formulae (2) to (4) in all of the constituent units represented by the general formula (1) is 0% to 75% at a molar percentage: