Multilayer material based on active lithium, method of preparation and applications in electrochemical generators
US11335894B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Oct 4, 2019 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Dec 22, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for preparing a multilayer material based on active lithium, by depositing a film of active lithium on a protective layer at a sufficient speed so that substantially no oxidation of the lithium occurs, and/or during a sufficient time for the adhesion of the lithium to develop after contact with the protective layer. The multilayer material, when incorporated in an electrochemical battery as an anode, has excellent impedance stability and no formation of dendrites during the cycling. Batteries where the anode is the multilayer material are particularly efficient in terms of their coulombic efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.