| abstract |
Provided are a lithium ion secondary battery that operates at a high voltage, has a high cycle life and generates less gas, and an electrolyte for a non-aqueous storage device that enables the lithium ion secondary battery. Non-aqueous solvent; lithium salt having no boron atom (A); lithium salt containing boron atom represented by formula (1) or formula (2) (B); and compound containing nitrogen atom ( What contains C); is made into the electrolyte solution for nonaqueous electrical storage devices. (X is a halogen atom of F, Cl, Br; R 1 is a C1-10 hydrocarbon group; R 2 is H, F, or a C1-10 hydrocarbon group; A is 0 or 1; m is 0-4. Integer) [Selection] Figure 1 |