Composite membrane containing ion transfer polymer and method for preparing same
US-2017309927-A1 · Oct 26, 2017 · US
Ion exchange membrane and flow battery including same
US11309567B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11309567-B2 |
| Application number | US-201916623104-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 3, 2019 |
| Priority date | May 17, 2018 |
| Publication date | Apr 19, 2022 |
| Grant date | Apr 19, 2022 |
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- Title
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- Abstract
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
An ion exchange membrane including a first ion exchange resin layer with a first and a second surface; a second ion exchange resin layer on the first surface of the first ion exchange resin layer; and a third ion exchange resin layer on the second surface of the first ion exchange resin layer, wherein the second ion exchange resin layer and the third ion exchange resin layer each independently include an ionomer having a higher equivalent weight (EW) than an ionomer of the first ion exchange resin layer.
First claim
Opening claim text (preview).
The invention claimed is: 1. An ion exchange membrane comprising: a first ion exchange resin layer having a first and a second surface; a second ion exchange resin layer on the first surface of the first ion exchange resin layer; a third ion exchange resin layer on the second surface of the first ion exchange resin layer; a fourth ion exchange resin layer on a surface of the second ion exchange resin layer which is opposite to the surface in contact with the first surface of the first ion exchange resin layer; and a fifth ion exchange resin layer on a surface of the third ion exchange resin layer which is opposite to the surface in contact with the second surface of the first ion exchange resin layer, wherein the first, second, third, fourth and fifth ion exchange resin layers each independently comprise one or more ionomer, and the one or more ionomer included in each of the second ion exchange resin layer and the third ion exchange resin layer has a higher equivalent weight (EW) than the one or more ionomer of the first ion exchange resin layer; and the one or more ionomer included in each of the fourth ion exchange resin layer and the fifth ion exchange resin layer has a higher EW than the one or more ionomer of the second ion exchange resin layer and the third ion exchange resin layer. 2. The ion exchange membrane of claim 1 , wherein the first, second and third ion exchange resin layers each independently comprise one or more ionomer having an EW of greater than or equal to 500 g/mol and less than or equal to 1,100 g/mol. 3. The ion exchange membrane of claim 1 , wherein the first ion exchange resin layer comprises one or more ionomer having an EW of greater than or equal to 500 g/mol and less than or equal to 900 g/mol; and the second ion exchange resin layer and the third ion exchange resin layer each independently comprise one or more ionomer having an EW of greater than 900 g/mol and less than or equal to 1,100 g/mol. 4. The ion exchange membrane of claim 1 , wherein the first, second and third ion exchange resin layers each have a thickness of greater than or equal to 5 μm and less than or equal to 30 μm. 5. The ion exchange membrane of claim 1 , wherein the first, second, third, fourth and fifth ion exchange resin layers each independently comprise one or more ionomer having an EW of greater than or equal to 500 g/mol and less than or equal to 1,100 g/mol. 6. The ion exchange membrane of claim 1 , wherein the first ion exchange resin layer comprises one or more ionomer having an EW of greater than or equal to 500 g/mol and less than or equal to 750 g/mol; the second ion exchange resin layer and the third ion exchange resin layer each independently comprise one or more ionomer having an EW of greater than 750 g/mol and less than or equal to 900 g/mol; and the fourth ion exchange resin layer and the fifth ion exchange resin layer each independently comprise one or more ionomer having an EW of greater than 900 g/mol and less than or equal to 1,100 g/mol. 7. The ion exchange membrane of claim 1 , wherein the first, second, third, fourth and fifth ion exchange resin layers each have a thickness of greater than or equal to 5 μm and less than or equal to 30 μm. 8. The ion exchange membrane of claim 1 , wherein the ion exchange membrane has a thickness of greater than or equal to 15 μm and less than or equal to 200 μm. 9. A flow battery comprising: a negative electrode; a positive electrode; and the ion exchange membrane of claim 1 provided between the negative electrode and the positive electrode.
Assignees
Inventors
Classifications
Fuel cells · CPC title
- H01M8/1053Primary
consisting of layers of polymers with at least one layer being ionically conductive · CPC title
in the form of layered products, e.g. coatings · CPC title
- H01M8/188Primary
by recharging of redox couples containing fluids; Redox flow type batteries · CPC title
Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US11309567B2 cover?
- An ion exchange membrane including a first ion exchange resin layer with a first and a second surface; a second ion exchange resin layer on the first surface of the first ion exchange resin layer; and a third ion exchange resin layer on the second surface of the first ion exchange resin layer, wherein the second ion exchange resin layer and the third ion exchange resin layer each independently …
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/1053. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 19 2022 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).