公开(公告)号：WO2023078891A1

公开(公告)日：2023-05-11

申请号：PCT/EP2022/080495

申请日：2022-11-02

Applicant: SOLVAY SA

Inventor： GUILLAUME, Maxime ,  GRANDFILS, Didier ,  MERLO, Luca ,  CHOI, Ji-Ae ,  FINSY, Vincent

IPC: H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

Abstract: The present invention relates to a secondary battery comprising a) a negative electrode comprising an alkali metal; b) a protective layer on a surface of the negative electrode; and c) a liquid electrolyte comprising a solvent mixture and at least one metal salt, wherein the protective layer comprises at least one (per)fluoroelastomer, and the solvent mixture comprises i) at least one fluorinated ether compound and ii) at least one non-fluorinated ether compound. The present invention also relates to use of a (per)fluoroelastomer as a protective layer for a negative electrode comprising an alkali metal in a secondary battery, wherein the secondary battery comprises a solvent mixture comprising i) at least one fluorinated ether compound and ii) at least one non-fluorinated ether compound.

公开(公告)号：WO2021043493A1

公开(公告)日：2021-03-11

申请号：PCT/EP2020/070530

申请日：2020-07-21

Applicant: SOLVAY SA

Inventor： FINSY, Vincent ,  GAUTHY, Fernand ,  MERLO, Luca ,  BRAIDA, Marc-David

IPC: H01M10/0562 ,  H01M10/0568

Abstract: The present invention relates to a process for manufacturing a free-standing solid composite electrolyte film, comprising the steps of a) mixing (i) at least one sulfide-based solid ionic conducting inorganic particle and (ii) at least one tetrafluoroethylene (TFE) (co)polymer to form a paste and b) calendaring or extruding the paste to produce a film. The invention also relates to a free-standing solid composite electrolyte film comprising (i) at least one sulfide-based solid ionic conducting inorganic particle and (ii) at least one TFE (co)polymer, wherein an amount of the (ii) at least one TFE (co)polymer is from 1.0 to 20.0 wt%, preferably from 2.0 to 15.0 wt% and more preferably from 3.0 to 10.0 wt%, based on the total weight of the film.

公开(公告)号：WO2022012889A1

公开(公告)日：2022-01-20

申请号：PCT/EP2021/067275

申请日：2021-06-24

Applicant: SOLVAY SA

Inventor： FINSY, Vincent ,  MERLO, Luca

IPC: H01M10/056

Abstract: The present invention relates to a solid composite electrolyte comprising i) at least one polymer; ii) at least one sulfide-based solid ionic conducting inorganic particle; and iii) at least one lithium salt, wherein the i) at least one polymer is selected from the group consisting of (co)polymers having recurring units derived from vinylidene fluoride (VDF), alkylene carbonate, acrylonitrile, silane, fluorosilane, acrylate, caprolactone and blends thereof, and wherein an amount of the ii) at least one sulfide-based solid ionic conducting inorganic particle is from 40.0 to 98.0% by weight (wt%), preferably from 60.0 to 97.0 wt%, and more preferably from 70.0 to 96.0 wt%, based on the total weight of the solid composite electrolyte. The invention also relates to a slurry for manufacturing a solid composite electrolyte comprising i) at least one polymer, ii) at least one sulfide- based solid ionic conducting inorganic particle, iii) at least one lithium salt, and iv) at least one polar aprotic solvent, to a solid state battery comprising the solid composite electrolyte and to use of the solid composite electrolyte in an electrolyte or an electrode of a solid state battery for improving ionic conductivity and mechanical properties.

公开(公告)号：WO2020126751A1

公开(公告)日：2020-06-25

申请号：PCT/EP2019/084682

申请日：2019-12-11

Applicant: SOLVAY SA

Inventor： FINSY, Vincent ,  MERLO, Luca ,  BRAIDA, Marc-David ,  BERTRY, Laure

IPC: H01M10/056 ,  H01M10/052 ,  H01M2/16

Abstract: 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 i) at least one solid inorganic particle is ionic conductive and is blended with the ii) at least one ionic liquid electrolyte. 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.