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Gas diffusion layer and membrane electrode assembly including gas diffusion layer, and method of regenerating membrane electrode assembly
US2015024293A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015024293-A1 |
| Application number | US-201314381751-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 28, 2013 |
| Priority date | Mar 2, 2012 |
| Publication date | Jan 22, 2015 |
| Grant date | — |
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Abstract
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Membrane electrode assembly is provided that includes an electrolyte membrane; an electrode catalytic layer including nanostructured elements having acicular micro structured support whiskers bearing acicular nanoscopic catalyst particles; and a gas diffusion layer including a nitrogen-containing compound that includes an anionic ion-exchange group. A method of regenerating the membrane electrode assembly is also provided.
First claim
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1 . A membrane electrode assembly comprising: an electrolyte membrane; an electrode catalytic layer comprising nanostructured elements having acicular microstructured support whiskers bearing acicular nanoscopic catalyst particles; and a gas diffusion layer comprising a nitrogen-containing compound having an anionic ion-exchange group. 2 . The membrane electrode assembly according to claim 1 , wherein the nitrogen-containing compound is crosslinked, thereby being immobilized to the gas diffusion layer. 3 . The membrane electrode assembly according to claim 1 , wherein the nitrogen-containing compound is selected from the group consisting of nitrogen-containing alkoxysilane, a hydrolyzed condensate thereof, and a mixture thereof. 4 . The membrane electrode assembly according to claim 1 , wherein the acicular microstructured support whiskers have a mean diameter of a whisker cross-section of no greater than 100 nm, and a mean aspect ratio of at least 3. 5 . A gas diffusion layer comprising a nitrogen-containing compound having an anionic ion-exchange group, wherein the nitrogen-containing compound is crosslinked, thereby being immobilized to the gas diffusion layer. 6 . The gas diffusion layer according to claim 5 , wherein the nitrogen-containing compound is selected from the group consisting of nitrogen-containing alkoxysilane, a hydrolyzed condensate thereof, and a mixture thereof. 7 . A method of regenerating a membrane electrode assembly, the membrane electrode assembly comprising: an electrolyte membrane; an electrode catalytic layer comprising nanostructured elements having acicular microstructured support whiskers bearing acicular nanoscopic catalyst particles; and a gas diffusion layer comprising a nitrogen-containing compound having an anionic ion-exchange group; the method comprising contacting the gas diffusion layer with an alkaline solution.
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Classifications
Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers · CPC title
on carbon or graphite · CPC title
- H01M8/1004Primary
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
Fuel cells with polymeric electrolytes · CPC title
Organic polymers · CPC title
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- What does patent US2015024293A1 cover?
- Membrane electrode assembly is provided that includes an electrolyte membrane; an electrode catalytic layer including nanostructured elements having acicular micro structured support whiskers bearing acicular nanoscopic catalyst particles; and a gas diffusion layer including a nitrogen-containing compound that includes an anionic ion-exchange group. A method of regenerating the membrane electro…
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- 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 Thu Jan 22 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).