Abstract: The microbattery is formed by a stack of solid thin layers on a substrate which, starting from the substrate, successively comprises a first electrode, a solid electrolyte and a second electrode/current collector assembly. A first surface and a second surface of the electrolyte are respectively in contact with a main surface of the first electrode and a main surface of the second electrode/current collector assembly. The dimensions of the main surface of the first electrode are smaller than the dimensions of the main surface of said assembly, and the dimensions of the first surface of the solid electrolyte are smaller than the dimensions of the second surface of the solid electrolyte. The solid electrolyte is furthermore not in contact with the substrate.

Abstract: The lithium-ion microbattery comprises a positive electrode having a first Li+ ion storage capacity and a first thickness made from a first lithium insertion material, an electrolyte and a negative electrode having a second storage capacity and a second thickness made from a second insertion material. The thicknesses are such that the ratio of the first storage capacity over the second storage capacity is greater than or equal to 10 and lower than or equal to 1000. During the first charging of the micro-battery, the Li+ ions are inserted in the negative electrode and completely saturate the second insertion material. When initial charging is continued, they form a metallic lithium layer between the electrolyte and the lithium-saturated negative electrode by electroplating. During the subsequent charging and discharging cycles, only the metallic lithium layer participates in transfer of lithium ions.

Abstract: The method for eliminating metallic lithium on a support comprises a plasma application step. The plasma is formed from a carbon source and an oxygen source with a power comprised between 50 and 400 W. It transforms the metallic lithium into lithium carbonate. The method then comprises a dissolution step of the lithium carbonate in an aqueous solution.

Abstract: The microcomponent, for example a microbattery, comprising a stack with at least two superposed layers on a substrate, is made using a single steel mask able to expand under the effect of temperature. The mask comprises at least one off-centered opening. The mask being at a first temperature, a first layer is deposited through the opening of the mask. The mask being at a second temperature, higher than the first temperature, a second layer is deposited through the opening of the mask. Finally, the mask being at a third temperature, higher than the second temperature, a third layer is deposited through the opening of the mask.

Abstract: This lithium electrochemical device includes a stack of layers suitable for constituting a micro-battery deposited on a substrate and encapsulated using a protective cap sealed onto the substrate. It includes two collectors of the current generated by the micro-battery and at least one insulating layer inert as regards lithium. The collectors and the insulating layer or layers are deposited on the substrate. The protective cap is sealed onto the substrate using the layers constituting the current collectors and the insulating layer or layers. The cap has layers of the same nature, positioned in the same order in line with their respective layers deposited on the substrate, so that when the cap is sealed onto the substrate, the respective layers deposited on the cap and on the substrate come into contact with each other to provide the actual seal of the cap on the substrate.

Abstract: The invention relates to a solid electrolyte, to a process for its manufacture and also to devices comprising it. The electrolyte of the invention is an amorphous solid of formula SivOwCxHyLiz, in which v, w, x, y and z are atomic percentages with 0?v?40, 5?w?50, x>12, 10?y?40, 1?z?70, and 95%?v+w+x+y+z?100%. The electrolyte of the invention finds application in the field of electronics and microbatteries in particular.

Abstract: A process for realizing a positive electrode of a lithium-ion battery utilizes deposition by cathode sputtering in several steps. Two successive deposition steps are separated by a cooling of the electrode during its realization, a first intermediate step of sputtering the target without introducing oxygen, and a second intermediate step of sputtering the target while introducing oxygen. The electrode obtained is of amorphous vanadium oxide and exhibits good capacity and reversibility.