公开(公告)号：US20220407106A1

公开(公告)日：2022-12-22

申请号：US17771287

申请日：2020-10-15

Applicant: SAFT

Inventor： Julien DEMEAUX ,  Marlène OSWALD ,  Apoline GILOT

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/485 ,  H01M4/58

Abstract: A gel-type electrolyte comprising a matrix which is a poly(vinylidene fluoride-co-hexafluoropropylene) polymer in which is embedded a liquid mixture comprising at least one lithium salt and a solvent comprising at least one linear carbonate, the poly(vinylidene fluoride-co-hexafluoropropylene) polymer matrix representing 5 to 95% by weight in relation to the weight of the gel-type electrolyte and the liquid mixture representing 95 to 5% by weight in relation to the weight of the gel-type electrolyte. This electrolyte exhibits increased stability with respect to oxidation and reduction.

公开(公告)号：US20210376384A1

公开(公告)日：2021-12-02

申请号：US16772060

申请日：2018-12-21

Applicant: SAFT

Inventor： Julien DEMEAUX ,  Marlène OSWALD

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/0569 ,  H01M10/0567 ,  H01M4/133 ,  H01M4/583 ,  H01M4/505 ,  H01M4/525

Abstract: An electrolyte composition for a lithium-ion electrochemical element, comprising: —at least one lithium tetrafluoride or hexafluoride salt, —the salts of lithium bis(fluorosulfonyl)imide LiFSI, —vinylene carbonate, —ethylene sulfate, —at least one organic solvent chosen from the group consisting of cyclic or linear carbonates, cyclic or linear esters, cyclic or linear ethers and a mixture of same. The use of this composition in a lithium-ion electrochemical element increases the service life of the element, in particular under low and high temperature cycling conditions.

公开(公告)号：US20250118807A1

公开(公告)日：2025-04-10

申请号：US18985359

申请日：2024-12-18

Applicant: SAFT

Inventor： Julien DEMEAUX ,  Marlène OSWALD

IPC: H01M10/0568 ,  H01M4/02 ,  H01M4/505 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

Abstract: An electrolyte composition for a lithium-ion electrochemical element, comprising: at least one lithium tetrafluoride or hexafluoride salt, the salts of lithium bis(fluorosulfonyl)imide LiFSI, vinylene carbonate, ethylene sulfate, at least one organic solvent chosen from the group consisting of cyclic or linear carbonates, cyclic or linear esters, cyclic or linear ethers and a mixture thereof. The use of this composition in a lithium-ion electrochemical element increases the service life of the element, in particular under low and high temperature cycling conditions.

公开(公告)号：US20230006257A1

公开(公告)日：2023-01-05

申请号：US17638442

申请日：2020-08-21

Applicant: SAFT

Inventor： Julien DEMEAUX ,  Marlène OSWALD

IPC: H01M10/0569 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567

Abstract: Disclosed is an electrolyte composition comprising: a) a solvent comprising: i) either a mixture of 1,1,1,3,3,3-hexaflu-oro-2-methoxypropane (HFMP) or of 1,1,1,3,3,3-hexafluoro-2-(fluoromethoxy)propane (HFMFP), of monofluoroethylene carbonate (F1EC) and of 2,2,2-trifluoroethyl methyl carbonate (F3EMC), ii) or a mixture of 1,1,1,3,3,3-hexafluoro-2-methoxypropane (HFMP) or of 1,1,1,3,3,3-hexafluoro-2-(fluoromethoxy)propane (HFMFP), of monofluoroethylene carbonate (F1EC) and of 2,2,2-trifluoroethyl acetate (F3EA), b) at least one lithium salt, the cation of which is the cation of an alkali metal.