Abstract: This invention relates to a solid-state battery and its production method.

Abstract: An electrochemical storage device includes an ionic transistor and an ionic capacitor, the ionic transistor including a gate electrode, the ionic capacitor including two electrodes, the device further including a connection element able to connect the gate electrode of the ionic transistor to a first of both electrodes of the ionic capacitor.

Abstract: An electrochemical charge storage device includes an ionic transistor and an ionic capacitor, the ionic transistor including a reservoir layer forming an ion reservoir; a source electrode in contact with a part of the reservoir layer; a drain electrode in contact with another part of the reservoir layer, the drain electrode and the source electrode being physically separated from each other, the source electrode and the drain electrode each being made of an electrically conductive material; and a gate electrode of an electrically conductive material, the gate electrode being separated from the reservoir layer by an ionic conductive layer of an ionic conductive and dielectric material, the ionic conductive layer being in contact with the source electrode and with the drain electrode. The ionic capacitor includes two electrodes. The ionic capacitor includes an ionic conductive layer separating the two electrodes from the ionic capacitor.

Abstract: A solid-state microbattery, including a substrate; a lithium-cobalt-oxide layer forming a cathode having first and second opposite surfaces; a lithium-based solid-state electrolyte formed on the first surface of the cathode; the second surface of the cathode is oriented towards the substrate; an anode formed on the solid-state electrolyte; noteworthy in that the lithium-cobalt-oxide layer possesses a grain size that increases from the first surface to the second surface.

Abstract: The present description concerns a DC-DC converter (100) comprising a first node (N1) and a second node (N2) intended to receive a DC voltage to be converted; a third node (N3) intended to deliver a DC voltage referenced to the second node; at least one first solid electrolyte capacitor (C1); at least one first switching cell (420) formed of four switches (421, 422, 431, 432) respectively coupling a first electrode of the capacitor to the first node and to the third node and a second electrode of the capacitor to the second node and to the third node; the switching frequency of the switches being adapted to the power required at the output and to selecting an operating mode of the first capacitor from among an electrostatic operating mode and an ionic operating mode.

Abstract: A solid-state microbattery, including a substrate; a lithium-cobalt-oxide layer forming a cathode having first and second opposite surfaces; a lithium-based solid-state electrolyte formed on the first surface of the cathode; the second surface of the cathode is oriented towards the substrate; an anode formed on the solid-state electrolyte; noteworthy in that the lithium-cobalt-oxide layer possesses a grain size that increases from the first surface to the second surface.

Abstract: A supercapacitor that includes: a first electrode; a second electrode; and a composite solid electrolyte disposed between the first electrode and the second electrode. The composite solid electrolyte includes a dielectric matrix and an ionic conductor disposed in channels/pores in the dielectric matrix. Methods of fabricating such supercapacitors are also disclosed.

Abstract: A method of fabricating a capacitor that includes: forming a three-dimensional structure over a substrate, the three-dimensional structure having a region with elongated pores extending towards the substrate from a top surface of the three-dimensional structure remote from the substrate or elongated columns extending away from the substrate towards the top surface of the three-dimensional structure remote from the substrate; forming a first electrode layer over a surface of the region of the three-dimensional structure, the first electrode conformal to the surface of the region; forming an intermediate layer over the first electrode layer; and forming a second electrode layer over the intermediate layer, the second electrode layer conformal to the intermediate layer, wherein forming the intermediate layer includes: forming a solid-state electrolyte layer partially conformal to the first electrode layer; and forming a dielectric layer conformal to the first electrode layer.

Abstract: A computer-implemented method for the machine learning of a model for classifying batteries into two categories: functional or defective, the method comprising the following steps: acquiring, on a set of batteries of the same type, a group of measurements characteristic of the operation of a battery, carrying out complete cycling of each battery of the set and measuring at least one curve from among a charge curve or a discharge curve of the battery, determining, for each battery, a label of belonging to the functional or defective category by comparing at least one measured curve with a reference curve characterizing the correct operation of the battery, and carrying out supervised training of a model for classifying a battery according to the two categories based on the groups of measurements and on the label of belonging to one of the two categories.

Abstract: A memory comprising: a resistive-switching element having first and second electrodes separated by a layer of insulator; an energy storage component or load coupled to the resistive-switching element via a first switch; and a control circuit configured: to program the resistive-switching element to have a set state, wherein, in the set state, a filament forms a conducting path between the first and second electrodes; and, following a dissolution of the filament, to recover electrical energy, generated by the dissolution of the filament, from one of the first and second electrodes by activating the first switch.

Abstract: A battery includes, stacked successively above a first face of a support, in a stacking direction, at least a cathode including a lower face, an upper face and a side wall directed in the stacking direction from the lower face to the upper face, a solid electrolyte, an anode, the battery including a coating portion surrounding, and in contact with, all of the side wall of the cathode, without covering the upper face of the cathode.

Abstract: An integrated energy storage component that includes a substrate supporting a contoured layer having a region with a contoured surface such as elongated pores. A stack structure is provided conformally over the contoured surface of this region. The stack is a single or repeated instance of MOIM layers, or MIOM layers, the M layers being metal layers, or a quasi-metal such as TiN, the O layers being oxide layers containing ions, and the I layer being an ionic dielectric. The regions having a contoured surface may be formed of porous anodized alumina.

Abstract: An electrolyte-based field effect transistor includes a dielectric layer; a source electrode and a drain electrode located on top of the dielectric layer; the electrolyte-based transistor further including an electrolyte layer between and on top of the source electrode and the drain electrode, the part of the electrolyte layer located between the source electrode and the drain electrode being in direct contact with the dielectric layer; and a gate electrode on top of the electrolyte layer, the orthogonal projection of the gate electrode in a plane including the source and drain electrodes being located, at least in part, between the source and the drain electrodes.

Abstract: A method for testing at least one energy micro-storage device includes an anode made of metallic lithium formed by electrodeposition of ions on a metal inert to lithium ions, the method comprising a succession of steps during the manufacture of said anode: a step of measuring the initial voltage OCV of the energy micro-storage device; a first charging step, comprising applying a current, measuring the voltage and the internal resistance of the device in order to verify the compliance of the measurements on a very low lithium layer thickness formed at the anode; a second charging stabilization step, comprising applying a current and measuring the voltage of the device in order to verify the compliance of the measurements on a low lithium layer thickness formed at the anode; a retention step with a zero current applied and measuring the voltage in order to confirm the compliance of the energy micro-storage device. A system for implementing the method is also provided.

Abstract: A device for converting an input DC voltage into an output DC voltage having a predetermined value, includes a set of elementary components comprising: an input voltage source; two output nodes; and a plurality of energy-storing elements, each consisting of one battery or of a plurality of batteries connected in series or in parallel. The converting device further comprises a switching matrix, configured to connect the elementary components to one another in a periodic cycle composed of a plurality of phases so that, for each cycle: Each phase is associated with one different connection configuration chosen so that, in each energy-storing element, the amount of charge at the start of the cycle is equal to the amount of charge at the end of the cycle.

Abstract: A method of fabricating a capacitor that includes: forming a three-dimensional structure over a substrate, the three-dimensional structure having a region with elongated pores extending towards the substrate from a top surface of the three-dimensional structure remote from the substrate or elongated columns extending away from the substrate towards the top surface of the three-dimensional structure remote from the substrate; forming a first electrode layer over a surface of the region of the three-dimensional structure, the first electrode conformal to the surface of the region; forming an intermediate layer over the first electrode layer; and forming a second electrode layer over the intermediate layer, the second electrode layer conformal to the intermediate layer, wherein forming the intermediate layer includes: forming a solid-state electrolyte layer partially conformal to the first electrode layer; and forming a dielectric layer conformal to the first electrode layer.

Abstract: An energy storage device includes a substrate having a portion that is optically transparent in a predefined range of wavelengths, and at least one electrochemical energy storage system comprising, as from a face of the transparent portion, a stack having successively a first current collector, a first electrode, an electrolyte, a second electrode and a second current collector, the stack being covered partially by a cover characterised in that wherein at least one part of the cover has a coefficient of light absorbance greater than or equal to 80%, and preferably greater than 90%.

Abstract: An electrode, in particular for micro-batteries, produced in a plurality of layers with intermediate steps of masking a first layer leaving some parts of the latter exposed in order next to produce a removal of material eliminating defects. After removal of the masking layer, the second layer can be formed. Other layers can then follow in the same way.

Abstract: An electrochemical device including, stacked successively on a face of a substrate, at least: a first current collector including at least one metal layer, a first electrode, an electrolyte, a second electrode. The first current collector includes a first portion covered by the first electrode and a second portion protruding laterally beyond the first electrode, and the electrolyte includes a surface covered by the second electrode. The second portion of the first collector extends under the electrolyte in a region of the electrolyte located outside the surface covered by the second electrode.

Abstract: A method for testing at least one energy micro-storage device includes an anode made of metallic lithium formed by electrodeposition of ions on a metal inert to lithium ions, the method comprising a succession of steps during the manufacture of said anode: a step of measuring the initial voltage OCV of the energy micro-storage device; a first charging step, comprising applying a current, measuring the voltage and the internal resistance of the device in order to verify the compliance of the measurements on a very low lithium layer thickness formed at the anode; a second charging stabilization step, comprising applying a current and measuring the voltage of the device in order to verify the compliance of the measurements on a low lithium layer thickness formed at the anode; a retention step with a zero current applied and measuring the voltage in order to confirm the compliance of the energy micro-storage device. A system for implementing the method is also provided.