Abstract: An object of the present invention is to provide a lithium cell exhibiting a high remaining capacity after high-temperature storage even if used at high voltages, and an electrolytic solution used for the cell. The present invention relates to an electrolytic solution containing a nonaqueous solvent; an electrolyte salt; and 10 vol % or more of a compound represented by the following formula (1) based on 100 vol % of the nonaqueous solvent, wherein R1, R2 and R3 may be the same as or different from one another, each representing a hydrogen atom, a fluorine atom, a C1-C20 alkyl group, or a C1-C20 fluorinated alkyl group, excluding cases where all of R1, R2, and R3 are hydrogen atoms or fluorine atoms.

Abstract: An object of the present invention is to provide a battery having excellent durability at high temperature and high voltage. The present invention is a battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the non-aqueous electrolyte contains (i) a compound represented by the general formula (1): Rf—SO2F??(1) (where Rf is a C1-13 linear or branched fluorine-containing alkyl group optionally containing an ether bond and optionally containing a double bond).

Abstract: An object of the present invention is to provide a lithium cell exhibiting a high remaining capacity after high-temperature storage, and an electrolytic solution used for the cell. The present invention relates to an electrolytic solution containing a nonaqueous solvent; an electrolyte salt; and 0.001 to 9% by mass of a compound represented by the following formula (1), wherein R1, R2 and R3 may be the same as or different from one another, each representing a hydrogen atom, a fluorine atom, a C1-C20 alkyl group, or a C1-C20 fluorinated alkyl group, where at least one of R1, R2, and R3 is a fluorine atom or a fluorinated alkyl group.

Abstract: An object of the present invention is to provide a lithium cell exhibiting a high remaining capacity after high-temperature storage even if used at high voltages, and an electrolytic solution used for the cell. The present invention relates to an electrolytic solution containing a nonaqueous solvent; an electrolyte salt; and 10 vol % or more of a compound represented by the following formula (1) based on 100 vol % of the nonaqueous solvent, wherein R1, R2 and R3 may be the same as or different from one another, each representing a hydrogen atom, a fluorine atom, a C1-C20 alkyl group, or a C1-C20 fluorinated alkyl group, excluding cases where all of R1, R2, and R3 are hydrogen atoms or fluorine atoms.

Abstract: An object of the present invention is to provide a battery having excellent durability at high temperature and high voltage. The present invention is a battery including a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the non-aqueous electrolyte contains (i) a compound represented by the general formula (1): Rf—SO2F??(1) (where Rf is a C1-13 linear or branched fluorine-containing alkyl group optionally containing an ether bond and optionally containing a double bond).