Patent ID: 11961993
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 13:
14. The secondary battery according to claim 1, wherein the second negative active material satisfies one or more of the following (1) to (6):
(1) an average particle diameter DV50 of 13 μm-17 μm;
(2) a particle diameter distribution satisfying 1.1≤(DV90−DV10)/DV50≤1.6;
(3) a degree of graphitization of 92%-94%;
(4) a specific surface area (BET) of 0.7 m2/g-1.3 m2/g;
(5) a tap density of 0.8 g/cm3-1.2 g/cm3; and
(6) a powder compacted density under a force of 30,000 N is 1.71 g/cm3-1.80 g/cm3.