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

Claim 3:
4. The secondary battery according to claim 1, wherein the first negative active material satisfies one or more of the following (1) to (5):
(1) an average particle diameter DV50 of 9 μm-16 μm;
(2) a degree of graphitization of 95%-99%
(3) a specific surface area (BET) of 1.6 m2/g-4.0 m2/g;
(4) a tap density of 0.8 g/cm3-1.3 g/cm3; and
(5) a powder compacted density of 1.7 g/cm3-2.0 g/cm3 under a force of 30,000 N.