Fluoropolymer membrane for electrochemical devices

A fluoropolymer, electrochemical technology, applied in the direction of electrochemical generators, chemical instruments and methods, circuits, etc., can solve the problem of not properly ensuring the manufacture of safe secondary batteries, etc.

Active Publication Date: 2019-03-15
SOLVAY SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Thus, it has been found that the use of electrolyte media containing LiTFSI dissolved in organic carbonates or ionic liquids does not adequately ensure the fabrication of safe secondary batteries in which a high voltage cathode is associated with a graphite based anode

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  • Fluoropolymer membrane for electrochemical devices
  • Fluoropolymer membrane for electrochemical devices
  • Fluoropolymer membrane for electrochemical devices

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[0113] According to a first embodiment of the invention, polymer (F) may be a functional polymer (F) comprising recurring units derived from at least one fluorinated monomer, at least one and optionally at least one hydrogenated monomer different from said functional hydrogenated monomer comprising at least one hydroxyl end group.

[0114] The functional polymer (F) according to this first embodiment of the invention is particularly suitable for use in films obtainable by the process according to the second embodiment of the invention.

[0115] According to a second embodiment of the invention, polymer (F) may be a functional polymer (F) comprising recurring units derived from at least one fluorinated monomer, at least one group, and optionally at least one hydrogenated monomer different from said functional hydrogenated monomer comprising at least one carboxylic acid end group.

[0116] The functional polymer (F) according to this second embodiment of the invention is partic...

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Abstract

The present invention pertains to a membrane for an electrochemical device, to a process for manufacturing said membrane and to use of said membrane in a process for manufacturing an electrochemical device.

Description

[0001] This application claims priority from European Application No. EP 16305722.7 filed on June 14, 2016, the entire content of which is hereby incorporated by reference for all purposes. technical field [0002] The invention relates to a membrane for an electrochemical device, a method for producing the membrane and the use of the membrane in a method for producing an electrochemical device. Background technique [0003] Fluoropolymers and particularly vinylidene fluoride polymers are used in a wide variety of applications including electrochemical applications. [0004] For example, due to their chemical resistance and thermal aging resistance, fluoropolymers are advantageously used as raw materials for the manufacture of electrodes or membranes suitable for use in electrochemical devices such as secondary batteries. [0005] Alkali metal or alkaline earth metal secondary batteries are typically formed by assembling a positive electrode (cathode), an ion-conducting memb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14B01D71/34C08F214/18C08F214/22C08J5/22H01M2/16H01M10/0525H01M50/406
CPCC08F214/225H01M10/0525B01D67/0079B01D69/148B01D71/32C08J5/225C08J2327/16H01M50/446H01M50/406C08J5/2281H01M10/056C08F14/22C08F20/06H01M4/668H01M2004/028H01M2004/029Y02E60/10Y02P70/50
Inventor J.A.阿布斯勒梅M-D.布拉伊达C.哈蒙H.鲁奥D.莫尔扎克G.贝斯那D.托马西
Owner SOLVAY SA
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