公开(公告)号：US20220278362A1

公开(公告)日：2022-09-01

申请号：US17637467

申请日：2020-07-21

Applicant: SOLVAY SA

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

IPC: H01M10/0562

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：US20220029193A1

公开(公告)日：2022-01-27

申请号：US17312023

申请日：2019-12-11

Applicant: SOLVAY SA

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

IPC: H01M10/0562 ,  H01M10/0563 ,  H01M10/0525

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 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.