Reinforced composite membranes and method for manufacturing the same
US-10355299-B2 · Jul 16, 2019 · US
Method for manufacturing reinforced separator, reinforced separator manufactured using the same and redox flow battery
US11309564B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11309564-B2 |
| Application number | US-201916489665-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 8, 2019 |
| Priority date | Jan 10, 2018 |
| Publication date | Apr 19, 2022 |
| Grant date | Apr 19, 2022 |
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Abstract
Official abstract text for this publication.
A method for manufacturing a reinforced separator including pretreating a porous support using a first solution including a first ionic polymer and ethanol; and impregnating a second solution including a second ionic polymer and a solvent into the pretreated porous support, wherein a concentration of the first ionic polymer in the first solution is lower than a concentration of the second ionic polymer in the second solution, a reinforced separator manufactured using the same, and a redox flow battery.
First claim
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The invention claimed is: 1. A method for manufacturing a reinforced separator comprising: pretreating a porous support with a first solution comprising a first ionic polymer and ethanol to form a pretreated porous support; and impregnating a second solution comprising a second ionic polymer and a solvent into the pretreated porous support, wherein a concentration of the first ionic polymer in the first solution is lower than a concentration of the second ionic polymer in the second solution. 2. The method for manufacturing the reinforced separator of claim 1 , wherein a content of the first ionic polymer of the first solution is from 1% by weight to 5% by weight with respect to a total weight of the first solution, and a content of the second ionic polymer of the second solution is from 10% by weight to 40% by weight with respect to a total weight of the second solution. 3. The method for manufacturing the reinforced separator of claim 1 , wherein a difference between a percent concentration of the first ionic polymer of the first solution and a percent concentration of the second ionic polymer of the second solution is from 5% by weight to 39% by weight. 4. The method for manufacturing the reinforced separator of claim 1 , wherein the first ionic polymer included in the first solution is in a powder state. 5. The method for manufacturing the reinforced separator of claim 1 , wherein the pretreating is performed by spraying the first solution on the porous support or dipping the porous support into the first solution. 6. The method for manufacturing the reinforced separator of claim 1 , wherein the impregnating of the second solution is performed by dipping the pretreated porous support into the second solution. 7. The method for manufacturing the reinforced separator of claim 1 , wherein the solvent included in the second solution is a hydrophilic solvent. 8. The method for manufacturing the reinforced separator of claim 1 , wherein the first and second ionic polymers are independently a fluorine-based polymer, a hydrocarbon-based polymer or a partial fluorine-based polymer. 9. The method for manufacturing the reinforced separator of claim 1 , wherein the first ionic polymer included in the first solution and the second ionic polymer included in the second solution are the same as each other or different from each other. 10. The method for manufacturing the reinforced separator of claim 1 , further comprising: after the impregnating of the second solution into the pretreated porous support, drying the pretreated porous support.
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Classifications
Fuel cells · CPC title
Energy storage using batteries · CPC title
Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells · CPC title
- H01M8/1044Primary
Mixtures of polymers, of which at least one is ionically conductive · CPC title
- H01M8/0239Primary
Organic resins; Organic polymers · CPC title
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- What does patent US11309564B2 cover?
- A method for manufacturing a reinforced separator including pretreating a porous support using a first solution including a first ionic polymer and ethanol; and impregnating a second solution including a second ionic polymer and a solvent into the pretreated porous support, wherein a concentration of the first ionic polymer in the first solution is lower than a concentration of the second ionic…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/1044. 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).