Commissariat À L'énergie Atomique Et Aux Énergies Alternatives

Solvay Sa

Rhodia Operations

Specialty Operations France

Centre National De La Recherche Scientifique

Other

UniversitÉ De Picardie Jules Verne

College De France

Syensqo Sa

Le Centre National De La Recherche Scientifique

Solvay France

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Marc-David Braida

Thierry Le Mercier

Julio A Abusleme

Hélène Rouault

Gaëlle Besnard

Christine Hamon

Valérie Buissette

Laure Bertry

Djamel Mourzagh

Daniel Tomasi

Robin Amisse

Christian Masquelier

Dominique Guyomard

Bernard Lestriez

Ségolène Brusseau

Lauriane D'Alencon

Olivier Pras

Jean Le Bideau

Philippe Barboux

Dominique Bascour

Vincent Finsy

Aurélie Guyomard-Lack

Réka Toth

Cyril Chomette

Jules Valente

Léo Merchat

Jean-Marie Tarascon

Benjamin Amestoy

Benoit Fleutot

Jiwei Ma

Elise Gutel

Ömer Ulas Kudu

Luca Merlo

Frédéric Colbeau-Justin

Mathilde Mignard

Stéphanie Lesturgez

Jérémie Salomon

Jacinthe Gamon

Jean-Daniel Compain

Val Rie Buissette

An accumulator with a bipolar architecture that comprises two terminal current collectors, between which a stack of n electrochemical cells is disposed, with n being an integer at least equal to 2, wherein: —each electrochemical cell comprises a positive electrode, a negative electrode and an ion conducting membrane that is interposed between the positive electrode and the negative electrode and comprises a liquid electrolyte included in the electrodes and the ion conducting membrane; —the n electrochemical cells are separated from each other by n−1 bipolar current collectors; wherein the positive electrode and the negative electrode of each electrochemical cell are gel electrodes comprising a composite material comprising a polymeric matrix made of at least one gelling polymer (FF), an active electrode material and optionally one or more electronic conductive additives, the polymeric matrix trapping the liquid electrolyte.

Electrochemical accumulator with bipolar architecture including a specific structure

The present invention relates to a method of preparation of a garnet-type inorganic material. It also relates to the garnet-type inorganic material itself. The process comprises the following steps: (1) bringing an aqueous solution S comprising (i) a salt of zirconium, (ii) a salt of lanthanum and (iii) a salt of the element A or a precursor of an oxide of element A into contact with an aqueous solution of a basic compound, as a result of which a precipitate suspended in the reaction medium is obtained; (2) stirring the reaction medium obtained at the end of step (1) for at least 30 min; (3) bringing the precipitate obtained at the end of step (2) into contact with an additive selected in the group consisting of: anionic surfactants; nonionic surfactants; polyethylene glycols; carboxylic acids and their salts; and surfactants of the carboxymethylated fatty alcohol ethoxylate type; (4) calcining in air the precipitate recovered at the end of the previous step at a temperature which is at least 400° C.; (5) bringing into contact the product obtained at the end of step (4) with a salt of lithium; (6) calcining in air the product obtained at the end of step (5) at a temperature between 700° C. and 1100° C.; 20 the inorganic compound M comprising or consisting essentially of a garnet oxide or garnet-type oxide containing, as constituent elements, the elements Li, La, Zr and at least one element A selected in the group consisting of Al, Ga, Nb, Fe, W, Ta, or a mixture thereof.

Method of preparation of a garnet-type inorganic material

The present invention concerns a new method for the preparation of a Li—P—S product, as well as the products obtainable by said methods, and uses thereof especially as solid electrolytes.

Method for the preparation of a Li-P-S product and corresponding products

The invention relates to a solid composite electrolyte comprising: i) at least one solid inorganic particle, ii) at least one ionic liquid electrolyte, and iii) at least one ionically non-conductive polymer, wherein the at least one solid inorganic particle i) is ionic conductive and is blended with the at least one ionic liquid electrolyte ii). The invention also relates to a process for manufacturing the solid composite electrolyte, to a solid state battery comprising the solid composite electrolyte, and to the use of said solid composite electrolyte in a solid state battery for improving ionic conductivity and mechanical properties.

Solid composite electrolyte

The present invention relates to the new process of preparation of a Li-rich layered oxide based on Mn and optionally on Ni and/or Co in which F is incorporated within the crystal of the oxide (or 'fluorinated oxide'). It also relates to the new fluorinated oxide its use as a component in a cathode of a battery.

Fluorinated oxide based on Li and Mn

The present invention pertains to a membrane for an electrochemical device, to a process for manufacturing said membrane and to use of said membrane in a process for manufacturing an electrochemical device.

Membrane including fluoropolymer hybrid organic/inorganic composite, and electrochemical device having the same

Stable suspensions of silica particles in water-immiscible polar organic liquids are provided.

Silica suspensions

The present invention relates to a process for preparing an ammonium vanadium phosphate of formula (NH)(VO)(HPO). It also relates to a process for preparing a vanadium orthophosphate VPO.

Method for preparing a vanadium phosphate

The invention relates to an NVPF-based composition and the use thereof in the field of batteries as an electrochemically active material. The invention also relates to a conductive composition comprising said composition as well as to a method for obtaining said composition.

Positive electrode composition

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.

Flexible battery

The present invention pertains to a process for preparing particles of rare earth sulfide comprising the steps of:&#x2014;preparing a reaction mixture comprising at least one compound comprising at least one rare earth element (A) and at least one alkali metal sulfide (B),&#x2014;submitting said reaction mixture to a mechanical stress so as to cause a chemical reaction that produces the particles of rare earth sulfide.

Mechanochemical synthesis of rare earth sulfides

Fluoropolymer membrane for electrochemical devices

The present invention pertains to an electrode-forming composition, to use of said electrode-forming composition in a process for the manufacture of an electrode, to said electrode and to an electrochemical device comprising said electrode. The electrode-forming composition comprises at least one partially fluorinated fluoropolymer comprising recurring units derived from at least one fluorinated monomer and at least one functional hydrogenated monomer comprising at least one carboxylic acid end group, at least one electro-active compound, at least one liquid medium comprising at least one organic carbonate or at least one ionic liquid, and at least one metal salt.

Electrode-forming composition

The present invention provides a solid-liquid electrolyte in the form of a gel which comprises an organic carbonate-based solvent, precipitated silica, at least one ionically conducting salt and optionally additives. The invention also relates to batteries containing said solid-liquid electrolyte. The solid-liquid electrolyte according to the present invention can improve the electrochemical properties of batteries and prevent electrolyte leakage thus reducing the risk of corrosion of the batteries.

Solid-liquid electrolyte for use in a battery

Growing community of inventors

Bry-sur-Marne, France

Marc-David Braida