Prelithiated negative electrodes including composite Li—Si alloy particles and methods of manufacturing the same
US11848440B2 · kind B2 · utility
1Cited by
22References
18Claims
0Family size
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Key dates
| Filing date | Apr 1, 2021 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Jan 15, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of making a negative electrode for an electrochemical cell of a secondary lithium battery. The negative electrode includes composite Li—Si alloy particles dispersed in a polymer binder. The composite Li—Si alloy particles are formed by contacting Li—Si alloy particles with a precursor solution that includes a phosphorus sulfide compound dissolved in an organic solvent to form a lithium thiophosphate solid electrolyte layer over an entire outer surface of each of the Li—Si alloy particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.