Porous silicon-silicon oxide-carbon composite, and method of preparing the same
US10892477B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 30, 2016 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Sep 3, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a porous silicon-silicon oxide-carbon composite comprising a silicon oxide-carbon structure and silicon particles, wherein the silicon oxide-carbon structure comprises a plurality of micropores, and the silicon particles are uniformly distributed in the silicon oxide-carbon structure. The porous silicon-silicon oxide-carbon composite of the present invention shows decreased volume expansion due to the intercalation of lithium ions and improved electric conductivity, and has a porous structure. Accordingly, an electrolyte easily penetrates into the porous structure, and output properties may be improved. When the composite is included in a negative electrode active material, the performance of a lithium secondary battery may be further improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.