Lithium ion battery and negative electrode material thereof
US11050052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Oct 14, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a lithium ion battery and a negative electrode material thereof. The negative electrode material includes a mixture of a graphite and an amorphous carbon, wherein the graphite is subjected to a surface treatment, and the surface treatment manner is a combination of mechanical fusion modification and spray drying coating, and wherein the graphite has a graphitization degree of 90-96%, an average particle diameter D50 of 13-25 μm and a specific surface area BET of 0.8-2.5 m2/g, and the amorphous carbon has a graphitization degree of 65-80%, an average particle diameter D50 of 2-15 μm and a specific surface area BET of 1.0-3.0 m2/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.