| abstract |
(57) [Problem] To have excellent high-temperature cycle characteristics and high-temperature storage stability. SOLUTION: A negative electrode having a carbon material capable of doping / dedoping lithium as a negative electrode active material, a positive electrode having a composite oxide of lithium and a transition metal as a positive electrode active material, And a non-aqueous electrolyte, wherein the non-aqueous electrolyte contains a compound having a structure represented by the chemical formula (1). Embedded image (In the chemical formula (1), the substituents R1 to R4 represent C n H 2n + 1 Or a structure represented by C n Y m H (2n + 1-m). However, n = 1 to 3, Y is halogen, and 1 <m ≦ 2n +1. ) |