Silicon-containing electrochemical cells and methods of making the same
US11626591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2020 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Jun 1, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrochemical cell is provided herein as well as methods for preparing electrochemical cells. The electrochemical cell includes a negative electrode and a positive electrode. The negative electrode includes a prelithiated electroactive material including a lithium silicide. Lithium is present in the prelithiated electroactive material in an amount corresponding to greater than or equal to about 10% of a state of charge of the negative electrode. The electrochemical cell has a negative electrode capacity to positive electrode capacity for lithium (N/P) ratio of greater than or equal to about 1, and the electrochemical cell is capable of operating at an operating voltage of less than or equal to about 5 volts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.