| abstract |
Provided are a non-aqueous electrolyte and a battery in which a rise in resistance associated with a charge / discharge cycle is suppressed and battery characteristics during large current discharge are improved. The separator is impregnated with an electrolytic solution. The electrolytic solution contains a solvent, an electrolyte salt, and, as an additive, a heteropolyacid and / or heteropolyacid compound, and a monofluorophosphate and / or difluorophosphate. [Selection] Figure 2 |