Negative active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same
US11502326B2 · kind B2 · utility
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Key dates
| Filing date | Apr 5, 2012 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Feb 1, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for a rechargeable lithium battery includes a core including a SiO2 matrix and a Si grain, and a coating layer continuously or discontinuously coated on the core. The coating layer includes SiC and C, and the peak area ratio of the SiC (111) plane to the Si (111) plane as measured by X-ray diffraction analysis (XRD) using a CuKα ray ranges from about 0.01 to about 0.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.