Solid composite fluoropolymer separator
US-10586964-B2 · Mar 10, 2020 · US
Fluoropolymer membrane for electrochemical devices
US11145893B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11145893-B2 |
| Application number | US-201716310410-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 13, 2017 |
| Priority date | Jun 14, 2016 |
| Publication date | Oct 12, 2021 |
| Grant date | Oct 12, 2021 |
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Abstract
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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.
First claim
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The invention claimed is: 1. A membrane for an electrochemical device, said membrane consisting of: at least one polymer (F), wherein polymer (F) is a fluoropolymer, and a liquid medium (L), wherein medium (L) comprises at least one organic carbonate and, optionally, at least one ionic liquid, said membrane being free from one or more metal salts and, optionally, one or more additives. 2. The membrane according to claim 1 , wherein polymer (F) is a fluoropolymer hybrid organic/inorganic composite. 3. The membrane according to claim 1 , wherein the amount of medium (L) is at least 40% by weight, based on the total weight of said medium (L) and the at least one polymer (F). 4. The membrane according to claim 3 , wherein the amount of medium (L) is at least 50% by weight, based on the total weight of said medium (L) and the at least one polymer (F). 5. The membrane according to claim 3 , wherein the amount of medium (L) is at least 60% by weight, based on the total weight of said medium (L) and the at least one polymer (F). 6. The membrane according to claim 1 , wherein medium (L) consists of at least one organic carbonate and, optionally, at least one ionic liquid. 7. An electrochemical device comprising the membrane according to claim 1 . 8. An electrochemical device comprising at least one membrane according to claim 1 between a positive electrode (E) and a negative electrode (E), wherein at least one of the positive electrode (E) and the negative electrode (E) comprises: a current collector, and adhered to said current collector, at least one fluoropolymer layer comprising: at least one polymer (F), wherein polymer (F) is a fluoropolymer, at least one electro-active compound (EA), a liquid medium (L), at least one metal salt (M), optionally, at least one conductive compound (C), and optionally, one or more additives. 9. The electrochemical device according to claim 8 , wherein polymer (F) in any of the positive electrode (E) and the negative electrode (E) is a functional polymer (F) comprising recurring units derived from at least one fluorinated monomer, at least one functional hydrogenated monomer comprising at least one carboxylic acid end group and, optionally, at least one hydrogenated monomer different from said functional hydrogenated monomer comprising at least one carboxylic acid end group. 10. The electrochemical device according to claim 9 , wherein the functional hydrogenated monomer comprising at least one carboxylic acid end group is selected from the group consisting of (meth)acrylic monomers of formula (V): wherein each of R 1 , R 2 and R 3 , equal to or different from each other, is independently a hydrogen atom or a C 1 -C 3 hydrocarbon group. 11. The electrochemical device according to claim 8 , wherein any of the positive electrode (E) and the negative electrode (E) is a flexible electrode (E), wherein the current collector comprises a polymer substrate and, adhered to said polymer substrate, an electrically conductive layer.
Assignees
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Classifications
Moulding; Embossing; Cutting · CPC title
fluorine containing heterogeneous membranes · CPC title
containing fluorine · CPC title
Polyvinylidene fluoride · CPC title
inorganic · CPC title
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Frequently asked questions
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- What does patent US11145893B2 cover?
- 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.
- Who is the assignee on this patent?
- Solvay, Commissariat A L Energie Atomique Et Aux Energies Alternatives, Commissariat A Lenergie Atomique Et Aux Energies Aternatives
- What technology area does this patent fall under?
- Primary CPC classification H01M10/056. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 12 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).