Solid-state battery with solid electrolyte surface topography design
US12278339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2019 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Jul 1, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid-state battery cell, such as a lithium-ion cell, is assembled with a solid electrolyte layer member positioned between co-extensive surface layers of an anode active layer member and a cathode active material layer member. At least one of the engaging surfaces of the solid electrolyte layer is not flat. It is formed with a topographical pattern comprising recesses in a flat surface, or a surface of projections and recesses, and placed against a compatibly-shaped, mating surface of the anode layer and/or the cathode layer. The re-shaping of the surface(s) of the solid electrolyte layer and adjoining electrode layer(s) is to significantly increase the effective contact area with the facing layer of electrode material and improve the conduction of ions across the interface. A thin film of interlayer material may be placed between the surfaces of the facing cell members with the specially shaped adjacent faces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.