Solid electrolyte and preparation method thereof, and electrochemical device and electronic device comprising solid electrolyte
US11588174B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2019 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Feb 6, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present application relate to a solid electrolyte and a preparation method thereof, and an electrochemical device and an electronic device comprising the solid electrolyte. The solid electrolyte comprises a lithium-containing transition metal sulfide being represented by the chemical formula of Li2−2a+bCd1+aMcGe1−dS4, where M is selected from the group consisting of Al, Ga, In, Si, Sn and a combination thereof, wherein 0<a≤0.25, 0≤b≤0.2, 0≤c≤0.2, and 0≤d≤0.2. The embodiments of the present application effectively improve the shortcomings of poor chemical stability of the conventional thiophosphate solid electrolyte in an atmospheric environment by providing the above solid electrolyte having a thio-LISICON structure and containing no phosphorus (P), so that the solid electrolyte has both good chemical stability and high ionic conductivity, thereby reducing the processing environment requirements and manufacturing cost of the solid electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.