NON-AQUEOUS ELECTROLYTIC SOLUTION, SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME

A non-aqueous electrolyte solution contains a sulfonylimide compound represented by the general formula (1): LiN(RSO)(RSO) (wherein R and R are identical or different from each other and each represents a fluorine atom, an alkyl group having 1 to 6 carbon atoms, or a fluoroalkyl group having 1 to 6 carbon atoms) as an electrolyte salt, an electrolyte solution solvent, and at least one of carbon dioxide (CO), carbon monoxide (CO), a bicarbonate ion (HCO- ), or a carbonate ion (CO2- ) dissolved therein. The electrolyte solution solvent includes at least one selected from the group consisting of a carbonate solvent, a lactone solvent, an ether solvent, a nitrile solvent, and a chain ester solvent, and a total amount of the at least one of CO, CO, HCO- , or CO2- dissolved is 20 ppm by mass or more.