| abstract |
(57) [Summary] [Problem] Long life and high energy with excellent cycle life A non-aqueous electrolyte secondary battery having a high density is obtained. SOLUTION: A chargeable and dischargeable positive electrode active material and a negative electrode active material, And a non-aqueous electrolyte secondary battery comprising: a non-aqueous electrolyte comprising: (Si, Ge, Pb, Bi, P, B, Ga, In, Al, As, Sb, Zn, Ir, It contains a compound containing one or more elements selected from the group consisting of Mg, Ca, Sr, and Ba) and one or more elements selected from the group consisting of fluorine, chlorine, bromine and iodine. . |