Protective layer including tin fluoride disposed on a lithium anode in a lithium-sulfur battery
US11398622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2021 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Jul 23, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M4/0421
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery is disclosed that includes an anode, a graded interface layer disposed on the anode, a cathode positioned opposite to the anode, an electrolyte, and a separator. The anode may output lithium ions during cycling of the battery. A graded interface layer may be disposed on the anode and include a tin fluoride layer. A tin-lithium alloy region may form between the tin fluoride layer and the anode. The tin-lithium alloy region may produce a lithium fluoride uniformly dispersed between the anode and the tin fluoride layer during operational cycling of the battery. The electrolyte may disperse throughout the cathode and the anode. The separator may be positioned between the anode and cathode. In some aspects, the battery may also include lithium electrodeposited on one or more exposed surfaces of the anode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.