Electrolyte solution for nonaqueous sodium ion battery, nonaqueous sodium ion battery, and method for producing the same

Abstract

An electrolyte solution for a nonaqueous sodium ion battery including (I) a nonaqueous solvent, (II) a sodium salt, and (III) a fluorosulfate, in which the electrolyte solution includes the (III) in an amount of 0.05 mass % to 10.00 mass % with respect to the total amount of the electrolyte solution for a nonaqueous sodium ion battery, and the electrolyte solution includes a chain carbonate in an amount of 0 mass % to 70 mass % with respect to the total amount of the (I); a nonaqueous sodium ion battery including at least a positive electrode, a negative electrode, and the electrolyte solution for a nonaqueous sodium ion battery; and a method for producing the nonaqueous sodium ion battery.

Dependencies are inferred from the claim text.