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

Claim 12:
13. The secondary battery according to claim 1, wherein the first negative active material satisfies one or more of the following (1) to (6):
(1) an average particle diameter DV50 of 11 μm-14 μm;
(2) a particle diameter distribution satisfying 0.9≤(DV90−DV10)/DV50≤1.3;
(3) a degree of graphitization of 96%-98%;
(4) a specific surface area (BET) of 2.1 m2/g-2.7 m2/g;
(5) a tap density of 0.9 g/cm3-1.2 g/cm3; and
(6) a powder compacted density of 1.8 g/cm3-1.9 g/cm3 under a force of 30,000 N.