Negative active material for rechargeable lithium battery and rechargeable lithium battery including same
US11641013B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Mar 3, 2021 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | May 1, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rechargeable lithium battery includes a negative active material including: a secondary particle including a core in which a plurality of primary particles are agglomerated, the primary particles including a natural graphite; and a coating layer including amorphous carbon and surrounding the core, wherein a Raman peak intensity ratio of a D peak (1350 cm−1 to 1370 cm−1) to a D′ peak (1570 cm−1 to 1620 cm−1) (ID/ID′) of the negative active material is about 3.2 to about 3.8, and a lattice constant La of the negative active material is about 30 nm to about 45 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.