| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery capable of maintaining low resistance and high capacity for the charge/discharge cycle at high rate.SOLUTION: In the nonaqueous secondary battery 100, the density f1 of a positive electrode active material layer 223 is f1≤2.85 g/cm, and the aspect ratio As of the primary particles 800 of positive electrode active material particles 610 is As≥1.5, in the arithmetic average of the positive electrode active material particles 610 contained in the positive electrode active material layer 223. |
