Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Johnny Amiran

Sami Oukassi

Messaoud Bedjaoui

Jean Brun

Steve Martin

Frederic Le Cras

Sylvain Nizou

Lucie Le Van-Jodin

Nicolas Lopez

Method for producing a positive electrode for a solid-state lithium microbattery comprising the following successive steps: supplying of a substrate made of ceramic, glass or silicon, locally covered with a metal layer, depositing of a cathodic layer made of a positive electrode material, for example made of mixed lithium oxide, the cathodic layer having a thickness greater than 1 &#x3bc;m, a first portion of the cathodic layer covering the substrate and a second portion of the cathodic layer covering the metal layer, intended to form the positive electrode, carrying out of a heat treatment at a temperature greater than or equal to 400&#xb0; C., on the cathodic layer, in such a way as to crystallise the second portion of the cathodic layer in order to form a positive electrode, and in such a way as to delaminate the first portion of the cathodic layer.

Method for manufacturing a positive electrode for a solid-state lithium microbattery

Sealing cell for encapsulating a microelectronic component arranged on a substrate, with a cap, said sealing cell including: a bottom including a receiving zone for the substrate and a peripheral zone surrounding the receiving zone, a side wall formed of an internal face, an external face and an upper face, the upper face being configured to support the cap facing the receiving zone, an opening, arranged in the bottom of the cell, in the side wall, or in the cap, the opening being configured to be connected to a pumping system, in such a way as to be able to place under controlled atmosphere a cavity delimited by the side wall, the bottom and the cap.

Sealing cell and method for encapsulating a microelectronic component with such a sealing cell

A method for producing lithium-ion batteries comprising the steps of (a) forming, on a substrate, a cathode current collector layer and a stack of a cathode layer made from a material capable of inserting lithium ions, an electrolyte layer and an anode layer, (b) depositing a lithium layer on the anode layer in order to form a lithium alloy, (c) short-circuiting the anode and cathode layers by depositing an anode current collector layer on the anode layer, thereby causing the diffusion of the lithium ions from the anode layer to the cathode layer, and (d) separating the batteries, resulting in the opening of the short-circuit between the anode and cathode layers in all the batteries. The method simplifies and improves the method for producing lithium-ion microbatteries and improves the diffusion of the lithium ions from the anode layer to the cathode layer after short-circuiting these two layers.

Method for producing lithium-ion batteries

A method for producing a solid lithium-based electrolyte for a solid microbattery implements the cathode sputtering of a lithium-based target material on an object supported by a substrate holder. A grid made of lithium-free electrically conductive material is interposed between the object and the lithium-based target material, the grid being electrically connected to the substrate holder.

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Eydoche, France

Johnny Amiran