Ion exchange membrane and method for manufacturing same
US-2019022634-A1 · Jan 24, 2019 · US
Electrolyte membrane of membrane-electrode assembly comprising plasma-treated filler and manufacturing method thereof
US12315974B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12315974-B2 |
| Application number | US-202117518434-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 3, 2021 |
| Priority date | Feb 9, 2021 |
| Publication date | May 27, 2025 |
| Grant date | May 27, 2025 |
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- Title
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Abstract
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Disclosed are an electrolyte membrane of a membrane-electrode assembly comprising a plasma-treated filler and a manufacturing method thereof. The electrolyte membrane includes an ionomer having a membrane form and a filler dispersed in the ionomer and having a hydrophobic surface.
First claim
Opening claim text (preview).
What is claimed is: 1. An electrolyte membrane of a membrane-electrode assembly for fuel cells, comprising: an ionomer having a membrane form and comprising a moisture channel which is a path through which moisture existing in the membrane moves; a filler comprising polytetrafluoroethylene (PTFE) and having hydrophobic surfaces, wherein the filler is plasma-treated to be temporarily hydrophilic and then admixed with the ionomer such that the filler is located in the moisture channel and the filler is to be hydrophobic surfaces after being located in the moisture channel to prevent or inhibit gas from moving through the moisture channel, wherein the filler has a particle form, and wherein the ionomer comprises one or more selected from the group consisting of a perfluorinated sulfonic acid (PFSA) ionomer, a sulfonated poly(arylene ether sulfone) (SPAES) ionomer, and a sulfonated poly(ether ether ketone) (SPEEK) ionomer. 2. The electrolyte membrane of claim 1 , wherein the filler has an average particle diameter (D50) of about 20 nm or less. 3. The electrolyte membrane of claim 1 , wherein the electrolyte membrane comprises an amount of about 5% to 10% by weight of the filler based on the total weight of the electrolyte membrane.
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Classifications
starting from solutions, dispersions or slurries exclusively of polymers · CPC title
halogenated, e.g. sulfonated polyvinylidene fluorides · CPC title
Fuel cells with polymeric electrolytes · CPC title
- H01M8/1004Primary
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
having sulfur, e.g. sulfonated-polyethersulfones [S-PES] · CPC title
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- What does patent US12315974B2 cover?
- Disclosed are an electrolyte membrane of a membrane-electrode assembly comprising a plasma-treated filler and a manufacturing method thereof. The electrolyte membrane includes an ionomer having a membrane form and a filler dispersed in the ionomer and having a hydrophobic surface.
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M8/1004. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 27 2025 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).