Negative active material and rechargeable lithium battery including same
US12176540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2023 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Nov 2, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for a rechargeable lithium battery and a rechargeable lithium battery that includes the negative active material. The negative active material includes a first active material, which includes tertiary particles of natural graphite in which secondary particles are agglomerated. Primary particles are agglomerated and spheroidized in the secondary particles. Artificial graphite is positioned on a surface of the primary particles and a surface of the secondary particles. An amorphous carbon coating layer surrounds the tertiary particles of natural graphite. Further, the negative active material includes a second active material, which includes a carbon-based material having an aspect ratio of about 2 to about 100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.