Abstract: The present invention pertains to a continuous process for the manufacture of an electrode, to the electrode obtained therefrom and to an electrochemical device comprising said electrode.

Abstract: A battery with a bipolar architecture that comprises two terminal current collectors between which a stack of n electrochemical cells is arranged, n being an integer at least equal to 2, wherein: each electrochemical cell comprises a positive electrode, a negative electrode and an electrolytic component arranged between the positive electrode and the negative electrode; the n electrochemical cells are separated from one another by (n1) bipolar current collectors; and wherein the positive electrode and the negative electrode of each electrochemical cell comprise a common active material as active material, which is a redox-active organic compound comprising, respectively, at least one group able to capture electrons and at least one group able to donate electrons.

Abstract: The invention relates to a separator for an electrochemical accumulator comprising a substrate provided with cavities, said substrate consisting of one or more polymers, at least one of which is a polymer from the family of polyaryletherketones, all or part of said cavities being filled in whole or in part by a gelled polymer electrolyte.

Abstract: The present invention relates to an electrochemical device comprising a) a positive electrode, b) a negative electrode, c) a separator, and d) a liquid electrolyte, wherein at least one of said positive electrode and said negative electrode is a gelled electrode comprising an electronic conductive substrate and directly adhered onto the electronic conductive substrate, at least one layer of a gelled electrode-forming composition, and wherein the d) liquid electrolyte comprises at least one organic carbonate and/or at least one ionic liquid, and at least one metal salt. The present invention also relates to a process for manufacturing an electrochemical device comprising at least one gelled electrode.

Abstract: The present invention pertains to a flexible electrode, to a process for the manufacture of said flexible electrode and to uses of said flexible electrode in electrochemical devices, in particular in secondary batteries.

Abstract: A method for manufacturing an electrode comprising a polymer matrix trapping an electrolyte, the method comprising the following steps: a) a step of preparing a composition comprising the ingredients intended to be included in the constitution of the electrode; b) a step of forming the electrode, from the composition, on a support; wherein the composition prepared in step a) is a composition in paste form having a dynamic viscosity greater than 5000. Pa·s measured at a shear gradient of 0.1 s-1 and at ambient temperature; and wherein the preparation step consists in introducing the ingredients intended to be included in the constitution of the electrode into a mixer with two co-rotating interpenetrating screws rotating in a closed sleeve, and mixing the ingredients therein, the preparation step being implemented at a temperature less than 100° C.

Abstract: A process for manufacturing a flow guide for an electrochemical reactor, including providing a substrate; on a first face of the substrate, printing a layer of electrically conductive ink by applying a shear stress to this layer, the viscosity of the printed ink being comprised between 70 and 500 Pa·s for a shear rate of 0.1 s?1, and the viscosity of the printed ink being comprised between 2.5 and 7 Pa·s for a shear rate of 100 s1, the layer of ink being printed to form a pattern including ribs delineating flow channels.

Abstract: A substantially planar device intended to be secured to the skin of a user is disclosed. The device includes components and electrical connection means defining at least one rigid zone of the device. The electrical connection means have, in the plane of the device, a surface corresponding to at least one component and the means are disposed such as to cover the at least one component in order to protect the component mechanically.

Abstract: The present invention pertains to a flexible electrode, to a process for the manufacture of said flexible electrode and to uses of said flexible electrode in electrochemical devices, in particular in secondary batteries.

Abstract: A method for cutting an electrode of an electrochemical generator including a metal sheet with a laser beam of a power lower than or equal to 600 W, one face of the metal sheet being partially coated with a thinly layered band called the cutting band, the optical absorption factor of which for an emission wavelength of the laser beam is higher than or equal to 0.5 and preferably higher than or equal to 0.8, and extends so as to define a cutting path, in which the laser beam is focused on the cutting band and the laser beam is animated with a relative movement with respect to the electrode so as to travel the cutting path.

Abstract: A process for manufacturing a flow guide for an electrochemical reactor, including providing a substrate; on a first face of the substrate, printing a layer of electrically conductive ink by applying a shear stress to this layer, the viscosity of the printed ink being comprised between 70 and 500 Pa·s for a shear rate of 0.1 s?1, and the viscosity of the printed ink being comprised between 2.5 and 7 Pa·s for a shear rate of 100 s1, the layer of ink being printed to form a pattern including ribs delineating flow channels.

Abstract: A leaktight electrochemical system, comprising a packaging, a porous electrically conductive substrate, forming a current collector and supporting, on at least one of its main faces, at least one continuous pattern of active material of an electrode, and at least one dense electrically conductive tab, connected to the substrate at at least one electrically conductive junction obtained by sewing using at least one electrically conductive thread, the tab supporting, on each of its main faces, at least one sealing tape sealed to the packaging to ensure the leaktight closure thereof.

Abstract: The invention relates to a bipolar lithium-ion battery comprising n electrochemical cells (C1, C2, C3) connected in series, n being an integer greater than or equal to 2. Each cell comprises a positive electrode (P1, P2, P3), a current collector (2) supporting the positive electrode, a negative electrode (N1, N2, N3), a current collector (8) supporting the negative electrode, and an electrolyte placed between each pair of positive and negative electrodes. In said battery, a so-called “common” current collector (4, 6) from each cell is integral with the current collector from an adjacent cell, the common current collector (4, 6) supporting an electrode of each polarity, and at least the n?1 common current collectors are made of a material formed of carbon fibers.

Abstract: A substantially planar device intended to be secured to the skin of a user is disclosed. The device includes components and electrical connection means defining at least one rigid zone of the device. The electrical connection means have, in the plane of the device, a surface corresponding to at least one component and the means are disposed such as to cover the at least one component in order to protect the component mechanically.

Abstract: A method for cutting an electrode of an electrochemical generator including a metal sheet with a laser beam of a power lower than or equal to 600 W, one face of the metal sheet being partially coated with a thinly layered band called the cutting band, the optical absorption factor of which for an emission wavelength of the laser beam is higher than or equal to 0.5 and preferably higher than or equal to 0.8, and extends so as to define a cutting path, in which the laser beam is focused on the cutting band and the laser beam is animated with a relative movement with respect to the electrode so as to travel the cutting path.

Abstract: The invention relates to the preparation of a crosslinked polymeric film bearing ionic groupings. The process consists in extruding a material comprising at least one prepolymer, in polymerizing said material after extrusion, and in subjecting the extruded material to a chemical reaction for grafting ionic groupings. The prepolymer comprises repeating units each comprising at least one aromatic group GA and at least one functional group GF; it bears at least one group GP which is polymerizable thermally at a temperature greater than the extrusion temperature, or photochemically, and also at least one reactive group GR which allows the grafting of ionic groupings. The films are useful as a membrane for fuel cells or electrodialysis, as an electrolyte of a lithium battery, of a supercapacitor or of an electrochromic device, or as an ion exchange membrane.

Abstract: The invention relates to the preparation of a crosslinked polymeric film bearing ionic groupings. The process consists in extruding a material comprising at least one prepolymer, in polymerizing said material after extrusion, and in subjecting the extruded material to a chemical reaction for grafting ionic groupings. The prepolymer comprises repeating units each comprising at least one aromatic group GA and at least one functional group GF; it bears at least one group GP which is polymerizable thermally at a temperature greater than the extrusion temperature, or photochemically, and also at least one reactive group GR which allows the grafting of ionic groupings. The films are useful as a membrane for fuel cells or electrodialysis, as an electrolyte of a lithium battery, of a supercapacitor or of an electrochromic device, or as an ion exchange membrane.