Multimetallic core/interlayer/shell nanoparticles
US-2016288102-A1 · Oct 6, 2016 · US
Catalyst
US10991952B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10991952-B2 |
| Application number | US-201716344769-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2017 |
| Priority date | Oct 26, 2016 |
| Publication date | Apr 27, 2021 |
| Grant date | Apr 27, 2021 |
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Abstract
Official abstract text for this publication.
Catalysts comprising nanostructured elements comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material having the formula PtxNiyAuz, wherein x is in a range from 27.3 to 29.9, y is in a range from 63.0 to 70.0, and z is in a range from 0.1 to 9.6. Catalyst described herein are useful, for example, in fuel cell membrane electrode assemblies.
First claim
Opening claim text (preview).
What is claimed is: 1. A catalyst comprising nanostructured element comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material having the formula Pt x Ni y Au z , wherein x is in a range from 27.3 to 29.9, y is in a range from 63.0 to 70.0, and z is in a range from 0.1 to 9.6. 2. The catalyst of claim 1 , wherein x is in a range from 29.4 to 29.9, y is in a range from 68.6 to 70.0, and z is in a range from 0.1 to 2.0. 3. The catalyst of claim 1 , wherein the catalyst material comprises a layer comprising platinum and nickel and a layer comprising gold on the layer comprising platinum and nickel. 4. The catalyst of claim 3 , wherein each layer independently has a planar equivalent thickness up to 25 nm. 5. The catalyst of claim 1 , wherein the catalyst material comprises alternating layers comprising platinum and nickel and layers comprising gold. 6. The catalyst of claim 5 , wherein each layer independently has a planar equivalent thickness up to 25 nm. 7. The catalyst of claim 1 , wherein the catalyst material comprises a layer comprising platinum, a layer comprising nickel on the layer comprising platinum, and a layer comprising gold on the layer comprising nickel. 8. The catalyst of claim 1 , wherein the catalyst material comprises a layer comprising nickel, a layer comprising platinum on the layer comprising nickel, and a layer comprising gold on the layer comprising platinum. 9. The catalyst of claim 1 having an exposed gold surface layer. 10. The catalyst of claim 1 , wherein the weight ratio of platinum to gold is in a range from 3:1 to 250:1. 11. A fuel cell membrane electrode assembly comprising the catalyst of claim 1 . 12. A method comprising annealing the catalyst of claim 1 . 13. A method of making the catalyst of claim 1 , the method comprising depositing platinum and nickel from a target comprising platinum and nickel and depositing gold from a target comprising gold. 14. A method of making the catalyst of claim 1 , the method comprising depositing platinum from a target comprising platinum, depositing nickel from a target comprising nickel, and depositing gold from a target comprising gold.
Assignees
Inventors
Classifications
- H01M4/921Primary
Alloys or mixtures with metallic elements · CPC title
Sputtering · CPC title
via the gaseous phase-sublimation · CPC title
in several steps · CPC title
- B01J23/892Primary
Nickel and noble metals · CPC title
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Frequently asked questions
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- What does patent US10991952B2 cover?
- Catalysts comprising nanostructured elements comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material having the formula PtxNiyAuz, wherein x is in a range from 27.3 to 29.9, y is in a range from 63.0 to 70.0, and z is in a range from 0.1 to 9.6. Catalyst described herein are useful, for example, in fuel cell membrane electrode assemblies.
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- What technology area does this patent fall under?
- Primary CPC classification H01M4/921. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 27 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).