NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTROLYTE SOLUTION, AND METHOD FOR PRODUCING NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

Disclosed is a non-aqueous electrolyte secondary battery including: a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the electrolyte solution includes a solvent, a solute, and a carboxylic anhydride, the solvent includes a carboxylic acid ester compound, and the solute includes a sulfonyl imide compound.