Negative electrode active material for rechargeable lithium battery, method for preparing the same, and negative electrode and rechargeable lithium battery including same
US11581540B2 · kind B2 · utility
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Key dates
| Filing date | Mar 18, 2020 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Mar 25, 2041 |
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 includes a carbon-based active material including highly crystalline natural graphite and artificial graphite. The carbon-based active material has a peak intensity ratio (P2/P4) of about 0.3 to about 0.4, wherein P2 refers to the 101 peak of a rhombohedral crystal grain and P4 refers to the 101 peak of a hexagonal crystal grain, as measured by X-ray diffraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.