公开(公告)号：US20230021479A1

公开(公告)日：2023-01-26

申请号：US17786774

申请日：2020-12-18

申请人： ARKEMA FRANCE ,  JOHNSON MATTHEY PLC

发明人： Samuel LAWTON ,  James DIBDEN ,  Dominique PLEE

IPC分类号： H01M4/04 ,  H01M4/134 ,  H01M4/1395

摘要： A method for modifying an electrode comprising an alkali metal is disclosed, the method comprising casting a salt solution comprising at least one salt comprising an alkaline ion and a solvent on the electrode; casting a fluoropolymer solution comprising at least one fluoropolymer and a solvent on the electrode; and drying the electrode. Also disclosed is an electrode comprising an alkali metal at least partly covered by a solid electrolyte interphase, said solid electrolyte interphase having atomic ratios of carbon, fluorine and sulfur atoms of 1 C:0.15 to 0.80 F:0.02 to 0.30 S.

公开(公告)号：US20210376329A1

公开(公告)日：2021-12-02

申请号：US17263721

申请日：2019-07-25

申请人： Arkema France

发明人： Dominique PLEE ,  Fabrice DOMINGUES DOS SANTOS ,  Gregory SCHMIDT

IPC分类号： H01M4/62 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/1395 ,  H01M4/04 ,  H01M10/0525 ,  C08F214/22 ,  C08L27/16

摘要： The invention relates to an anode for a Li-ion rechargeable battery, said anode being covered with a protective film based on fluorinated copolymer(s). The invention also relates to the processes for preparing this anode. The invention also relates to a Li-ion rechargeable battery comprising an anode according to the invention. The invention lastly relates to the use of fluorinated copolymer(s) as film for covering an anode for a lithium-ion battery comprising a negative electrode active material.

公开(公告)号：US20220029198A1

公开(公告)日：2022-01-27

申请号：US17298145

申请日：2019-11-28

申请人： Arkema France

发明人： Manuel HIDALGO ,  Dominique PLEE

IPC分类号： H01M10/0565 ,  H01M10/0525 ,  C08J5/18 ,  H01M50/497 ,  H01M50/431 ,  C08L27/18

摘要： The present invention relates to a solid polymer electrolyte in the form of an organic-organic composite material, intended to be used in a lithium-polymer battery. The invention also relates to a process for manufacturing such an electrolyte. This electrolyte is notably intended for making a lithium-polymer battery or an “all-solid” battery, notably as regards the ion-conducting separator. The invention thus also relates to a battery separator comprising such a polymer electrolyte, to processes for manufacturing same and to the battery incorporating this electrolyte.