| abstract |
A non-aqueous electrolyte secondary battery capable of suppressing decomposition of an electrolyte and suppressing deterioration when the battery is used under a high-temperature environment, and capable of providing a high energy density non-aqueous electrolyte secondary battery having a high capacity and excellent storage characteristics and cycle characteristics, , An electrolyte and a nonaqueous solvent, and a compound represented by the following general formula (1). R 1 , R 2 and R 3 are each a hydrogen atom, a cyano group or a hydrocarbon group of 1 to 10 carbon atoms which may have a halogen atom. R 1 and R 2 are not hydrogen atoms at the same time. [Index] A non-aqueous liquid electrolyte, a positive electrode active material, a negative electrode active material, a compound having a cyano group |