| abstract |
An object of the present invention is to provide a battery capable of exhibiting high output characteristics at low temperature even in a state where the battery is used to a certain extent, exhibiting good high-rate characteristics at room temperature, and further improving the safety of the battery. Aqueous electrolyte and non-aqueous electrolyte battery. The non-aqueous electrolyte solution for a non-aqueous electrolyte battery of the present invention contains a non-aqueous solvent, an electrolyte dissolved in the non-aqueous solvent, (I) a difluoride ionic complex (1), and (II) selected from the group consisting of specific cyclic phosphazene compounds, specific siloxane compounds, specific aromatic compounds, specific cyclohexene compounds, specific phosphate ester compounds, specific fluorinated linear ether compounds, specific fluorinated cyclic ethers At least one compound selected from the group consisting of a compound and a specific boronate ester compound, wherein 95 mol% or more of the difluoride ionic complex (1) is a difluoride ion taking a cis-steric configuration Sex complex (1-Cis). |