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| Integrated power source |
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| Solid state thin film battery having a high temperature lithium alloy anode |
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| Apparatus for coating a moving glass substrate |
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| High temperature superconducting thick films |
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Integrable solid state battery and process for producing same
| Details |
Inventors: Balkanski, Minko;
Assignee:
Primary Examiner: Walton; Donald L.
Assistant Examiner:
Attorney, Agent or Firm: Lowe, Price, LeBlanc, Becker & Shur
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. |
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DETAILED DESCRIPTION I 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.
2.
The process of claim 1, wherein the layer of layered compound is created by molecular beam deposition on one of the contact elements, and, on the layer thus obtained, the layer of superionic electrolyte and the layer of alkali metal are formed, respectively.
3.
The process of claim 1, wherein the layer of layered compound is created by molecular beam deposition on the layer of superionic electrolyte which is formed on the layer of alkali metal, after deposit of said latter layer on one of the contact elements.
4.
The process of claim 1, wherein the grating comprises electrically charged lines formed by scanning the substrate film surface with a very fine beam of electrons, ions or X photons.
5.
The process of claim 4, wherein the grating of electrically charged lines comprises parallel lines having a pitch compatible with the pitch of the lamellae of the layered compound.
6.
The process of claim 1, wherein the grating comprises oxygenated surface atoms formed by partial oxidation of the substrate film surface atoms.
7.
The process of claim 1, wherein the molecular beam deposition is performed in an ultrahigh vacuum chamber
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MEMS 
