| 摘要 |
A non-aqueous electrolyte secondary cell having high temperature storage characteristics and cycle characteristics is provided. This object is realized by adopting the following configuration. The non-aqueous electrolyte secondary cell includes a positive electrode having a positive electrode active material; a negative electrode having a negative electrode active material; and a non-aqueous electrolyte having a non-aqueous solvent and an electrolyte salt. And the positive electrode active material contains a compound represented by Lia(NibCocMnd)1−x−yWxZryO2 (0.9≰a≰1.2, 0.3≰b≰0.6, 0.1≰c≰0.7, 0≰d≰0.4, b+c+d=1, 0.001≰x≰0.05, 0.001≰y≰0.05); and the non-aqueous electrolyte contains at least one compound selected from the group consisting of cyclohexylbenzene, tert-butylbenzene and tert-amylbenzene in a total concentration of 0.1 to 5% by mass relative to the mass of the non-aqueous electrolyte.
|
