Process for producing a solid state battery

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 or thin film of ion-superconducting 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 thin film or layer of layered compound being oriented substantiallly perpendicularly to the surface of the solid electrolyte, said process including forming the layer or thin film of layered intercalation compound by the steps of (a) forming a periodic irregularity in only the surface atoms of a substantially smooth substrate surface, the substrate being selected from the group consisting of one of said metallic contact elements and said ion-superconducting solid electrolyte glass, and (b) molecular beam depositing the layer or thin film of layered intercalation compound on the substrate surface containing the periodic irregularity of surface atoms, the periodic irregularity of surface atoms conditioning the nucleation starting of the layered growth, whereby the lamellae of the layered compound correspond with the periodic irregularity of surface atoms.