| 摘要 |
Disclosed is a nonaqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode active material of this nonaqueous electrolyte secondary battery contains a secondary particle wherein primary particles aggregate. When the average particle diameter of the primary particles is A µm, the average particle diameter of the positive electrode active material is B µm, the tap density of the positive electrode active material is C g/ml and the true specific gravity of the positive electrode active material is D g/ml, the value (V<SUB>Pr</SUB>) determined by the following formula: (1 - C/D)/(A<SUP>2</SUP> × B<SUP>3</SUP>) is not less than 0.0005 but not more than 0.04. |
