Lithium-doped silicon-based oxide negative electrode active material, method of preparing the same, and negative electrode and secondary battery including the same
US11923540B2 · kind B2 · utility
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Key dates
| Filing date | Jul 23, 2021 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a negative electrode active material which includes a negative electrode active material particles which includes a silicon oxide (SiOx, 0<x≤2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. The negative electrode active material has a content of a nitrogen element according to X-ray photoelectron spectroscopy (XPS) of 1.45 atom % or less. Also provided are a negative electrode and a lithium secondary battery including the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.