Abstract: To provide an electrolyte for a storage device capable of lowering the electric resistance and maintaining a high capacity even after charging and discharging are repeatedly carried out, and a storage device.

Abstract: To provide an electrolyte for a storage device capable of lowering the electric resistance and maintaining a high capacity even after charging and discharging are repeatedly carried out, and a storage device.

Abstract: To provide an electrolyte for a storage device capable of lowering the electric resistance and maintaining a high capacity even after charging and discharging are repeatedly carried out, and a storage device.

Abstract: To provide a non-aqueous electrolytic solution for a storage device, which can reduce the electric resistance, which is excellent in cycle properties, and which can suppress gas generation by the reaction of the non-aqueous electrolytic solution, and a storage device. A non-aqueous electrolytic solution for a storage device having an electrolyte dissolved in a non-aqueous solvent, wherein the electrolyte is a lithium salt soluble in the non-aqueous solvent, and the non-aqueous electrolytic solution contains an organic sulfone compound represented by the following formula (1): wherein the symbols are as defined in the description.