Integrable solid state battery and process for producing same
First Claim
1. A process for producing a solid state battery successively comprising, superimposed between two metallic contact elements, a layer or thin film of an alkali metal which provides a source of ions, a layer of thin film of superionic solid electrolyte glass of high ionic conductivity and a layer or thin film of a layered intercalation compound capable of inserting ions issued from the layer or thin film of alkali metal, the lamellae of the film of layered compound being oriented substantially perpendicularly to the surface of the solid electrolyte, said process comprising the steps of (a) forming on a substrate film surface a grating of electrically charged lines or of oxygenated surface atoms, and (b) molecular beam depositing the layer or thin film of the layered compound by direct grafting on the substrate film, said grating conditioning the nucleation starting of the layered growth.
0 Assignments
0 Petitions
Accused Products
Abstract
This invention relates to a process for producing a solid state battery successively comprising, superposed between two metallic contact elements, a layer or thin film of an alkali metal such as lithium, constituting a source of ions, a layer or thin film of a superionic solid electrolyte and a layer or thin film of a layered intercalation compound capable of inserting ions issued from the alkali metal film. The lamellae of the film of layered compound are oriented so that their c-axis is substantially parallel to the surface of the solid electrolyte. The process consists essentially in making the layer or thin film of layered compound by direct grafting on the film which is to serve as substrate therefor, on which is initially impressed a grating which conditions the nucleation starting the crystal growth by means of the techniques of molecular beam deposition. The invention also relates to a battery made in accordance with this process.
67 Citations
7 Claims
- 1. A process for producing a solid state battery successively comprising, superimposed between two metallic contact elements, a layer or thin film of an alkali metal which provides a source of ions, a layer of thin film of superionic solid electrolyte glass of high ionic conductivity and a layer or thin film of a layered intercalation compound capable of inserting ions issued from the layer or thin film of alkali metal, the lamellae of the film of layered compound being oriented substantially perpendicularly to the surface of the solid electrolyte, said process comprising the steps of (a) forming on a substrate film surface a grating of electrically charged lines or of oxygenated surface atoms, and (b) molecular beam depositing the layer or thin film of the layered compound by direct grafting on the substrate film, said grating conditioning the nucleation starting of the layered growth.
Specification