| abstract |
The present invention provides a nonaqueous electrolyte secondary battery excellent in cycle durability by suppressing deterioration of an electrolytic solution and a negative electrode active material, and a method of manufacturing the same. The nonaqueous electrolyte secondary battery of the present invention comprises a positive electrode capable of doping and dedoping lithium ions, a negative electrode capable of storing and discharging lithium, a lithium alloy or lithium ion, an organic solvent, a lithium salt electrolyte and an additive And the positive electrode active material of the positive electrode satisfies the following formula (1) (Wherein a, b, c and d satisfy 0 <a <1.4, 0 <b <1.4, 0 <c <1.4, 0 <d? 0.5, a + b + c + d = 1.5 and 1.0? A + b + c <1.5. And a spinel phase present in a part thereof, and the negative electrode active material of the negative electrode includes a carbon-based material whose entire surface or part of the surface is covered with a coating derived from an additive do. |