公开(公告)号：US20250062399A1

公开(公告)日：2025-02-20

申请号：US18723813

申请日：2022-12-15

Applicant: SPECIALTY OPERATIONS FRANCE

Inventor： Marc-David Braida ,  Réka Toth

IPC: H01M10/0562 ,  C01F17/36

Abstract: The present invention concerns new lithium rare earth halides that may be used as solid electrolytes or in electrochemical devices. The invention refers to a solution based process for the synthesis of such lithium rare earth halides.

公开(公告)号：US12294049B2

公开(公告)日：2025-05-06

申请号：US17625996

申请日：2020-07-29

Applicant: SPECIALTY OPERATIONS FRANCE

Inventor： Réka Toth ,  Laure Bertry ,  Valérie Buissette ,  Thierry Le Mercier ,  Marc-David Braida ,  Robin Amisse

IPC: H01M10/05 ,  C01G25/00 ,  C01G33/00 ,  C01G49/00 ,  H01M10/0525 ,  H01M10/056

Abstract: 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.