Gas Diffusion Electrodes and Methods for Fabricating and Testing Same
US-2015376803-A1 · Dec 31, 2015 · US
Ternary platinum alloy catalyst
US9960430B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9960430-B2 |
| Application number | US-201013148792-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 3, 2010 |
| Priority date | Feb 11, 2009 |
| Publication date | May 1, 2018 |
| Grant date | May 1, 2018 |
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Abstract
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A platinum alloy catalyst PtXY, wherein X is nickel, cobalt, chromium, copper, titanium or manganese and Y is tantalum or niobium, characterised in that in the alloy the atomic percentage of platinum is 46-75 at %, of X is 1-49 at % and of Y is 1-35 at %; provided that the alloy is not 66 at % Pt20 at % Cr14 at % Ta or 50 at % Pt, 25 at % Co, 25 at % Ta is disclosed. The catalyst has particular use as an oxygen reduction catalyst in fuel cells, and in particular in phosphoric acid fuel cells.
First claim
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The invention claimed is: 1. A ternary platinum alloy catalyst PtXY, wherein X is nickel and Y is tantalum, and wherein in the alloy the atomic percentage of platinum is 46-75 at %, of X is 25-40 at % and of Y is 1-20 at %. 2. The ternary platinum alloy catalyst according to claim 1 , wherein the catalyst is unsupported or supported on a dispersed support material. 3. The ternary platinum alloy catalyst according to claim 2 , wherein the catalyst is supported on a dispersed support material. 4. The ternary platinum alloy catalyst according to claim 3 , wherein the support material is a corrosion resistant carbon. 5. An electrode comprising a catalyst according to claim 1 . 6. The electrode according to claim 5 , wherein the electrode is a cathode. 7. A fuel cell comprising an electrode according to claim 5 . 8. The fuel cell according to claim 7 , wherein the fuel cell is a phosphoric acid fuel cell. 9. A catalyst coated membrane comprising a catalyst according to claim 1 . 10. A fuel cell comprising a catalyst coated membrane according to claim 9 . 11. The fuel cell according to claim 10 , wherein the fuel cell is a proton exchange membrane fuel cell.
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- What does patent US9960430B2 cover?
- A platinum alloy catalyst PtXY, wherein X is nickel, cobalt, chromium, copper, titanium or manganese and Y is tantalum or niobium, characterised in that in the alloy the atomic percentage of platinum is 46-75 at %, of X is 1-49 at % and of Y is 1-35 at %; provided that the alloy is not 66 at % Pt20 at % Cr14 at % Ta or 50 at % Pt, 25 at % Co, 25 at % Ta is disclosed. The catalyst has particular…
- Who is the assignee on this patent?
- Ball Sarah, Ralph Thomas Robertson, Theobald Brian Ronald, and 2 more
- 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 May 01 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).