| abstract |
(57) [Problem] To provide a non-aqueous electrolyte secondary battery in which deterioration of battery characteristics at high temperature is suppressed and gas generation inside the battery is small. SOLUTION: A positive electrode, a negative electrode, and a non-aqueous electrolyte obtained by dissolving an electrolyte salt in a non-aqueous solvent are provided. In addition to at least one electrolyte salt selected from the group consisting of the compounds represented by the following, LiPF 6 , LiBF 4 , LiSbF 6, a non-aqueous electrolyte secondary battery comprising at least one electrolyte salt selected from the group consisting of LiAsF 6. LiPF a (C b F 2b + 1 ) 6-a (a is an integer of 1 to 5, b is an integer of 1 or more) LiPF c (C d F 2d + 1 SO 2 ) 6-c (c is an integer of 1 to 5 and d is an integer of 1 or more) LiBFe (CfF2f + 1) 4-e (e is an integer of 1 to 3 and f is an integer of 1 or more) LiBF g (C h F 2h + 1 SO 2) 4-g (g is an integer from 1 to 3, h is 1 Is an integer greater than or equal to) |