Rhodia Operations

Specialty Operations France

Centre National De La Recherche Scientifique

College De France

Syensqo Sa

Laure Bertry

Marc-David Braida

Valérie Buissette

Thierry Le Mercier

Robin Amisse

Emmanuelle Allain Najman

Pascaline Garbey

Cédric Feral-Martin

Laurent Guy

Thomas Chaussee

Vincent Finsy

Réka Toth

Frédéric Colbeau-justin

Jean-Marie Tarascon

Jiwei Ma

Stéphanie Croyeau

Stéphanie Lesturgez

Frédéric Colbeau-Justin

Luca Merlo

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

A chemically modified precipitated silica characterised by the presence of methyl moieties chemically bound to the silica and a process for its manufacture.

Precipitated silica and process for its manufacture

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

A chemically modified precipitated silica characterised by the presence of alkyl moieties chemically bound to the silica and a process for its manufacture.

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

A precipitated silica suitable for thermal insulation applications and a process for its manufacture.

Growing community of inventors

Aubervilliers, France

Laure Bertry