Platinum-indium-iron/tungsten/manganese fuel cell electrocatalyst
View Patent ↗A fuel cell electrocatalyst that contains platinum, indium, and at least one of tungsten, iron, and manganese.
1. A catalyst for use in oxidation or reduction reactions, the catalyst comprising platinum in a concentration between about 5 and about 65 atomic percent, indium in a concentration between about 5 and about 80 percent, and at least one of tungsten, iron, and manganese wherein tungsten, iron, manganese, or a combination thereof is at a concentration that is between about 10 and about 85 atomic percent.
2. The catalyst of claim 1 wherein indium is at a concentration that is between about 5 and about 50 atomic percent.
3. The catalyst of claim 1 wherein platinum is at a concentration that is between about 5 and about 60 atomic percent, and indium is at a concentration that is between about 5 and about 50 atomic percent.
4. The catalyst of claim 1 wherein platinum is at a concentration that is between about 10 and about 50 atomic percent, indium is at a concentration that is between about 10 and about 40 atomic percent, and tungsten, iron, manganese, or a combination thereof is at a concentration that is between about 20 and about 70 atomic percent.
5. The catalyst of claim 1 wherein platinum is at a concentration that is between about 10 and about 30 atomic percent, indium is at a concentration that is between about 5 and about 30 atomic percent, and tungsten is present in the catalyst at a concentration that is between about 40 and about 80 atomic percent.
6. The catalyst of claim 1 wherein platinum is at a concentration that is between about 50 and about 60 atomic percent, indium is at a concentration that is between about 20 and about 30 atomic percent, and tungsten is present in the catalyst at a concentration that is between about 15 and about 25 atomic percent.
7. The catalyst of claim 1 wherein platinum is at a concentration that is between about 25 and about 65 atomic percent, indium is at a concentration that is between about 5 and about 50 atomic percent, and iron is at a concentration that is between about 10 and about 60 atomic percent.
8. The catalyst of claim 1 wherein platinum is at a concentration that is between about 30 and about 50 atomic percent, indium is at a concentration that is between about 15 and about 45 atomic percent, and iron is present in the catalyst at a concentration that is between about 15 and about 50 atomic percent.
9. The catalyst of claim 1 wherein platinum is at a concentration that is between about 45 and about 55 atomic percent, indium is at a concentration that is between about 20 and about 30 atomic percent, and iron is present in the catalyst at a concentration that is between about 20 and about 30 atomic percent.
10. The catalyst of claim 1 wherein platinum is at a concentration that is between about 10 and about 50 atomic percent, indium is at a concentration that is between about 5 and about 30 atomic percent, iron is present in the catalyst at a concentration that is between about 15 and about 80 atomic percent, and manganese is present in the catalyst at a concentration that is between about 1 and about 15 atomic percent.
11. The catalyst of claim 1 wherein platinum is at a concentration that is between about 30 and about 45 atomic percent, indium is at a concentration that is between about 15 and about 30 atomic percent, iron is present in the catalyst at a concentration that is between about 20 and about 45 atomic percent, and manganese is present in the catalyst at a concentration that is between about 3 and about 12 atomic percent.
12. The catalyst of claim 1 wherein platinum is at a concentration that is between about 10 and about 50 atomic percent, indium is at a concentration that is between about 10 and about 80 atomic percent, and manganese is present in the catalyst at a concentration that is no more than about 60 atomic percent.
13. The catalyst of claim 1 wherein platinum is at a concentration that is between about 20 and about 40 atomic percent, indium is at a concentration that is between about 40 and about 70 atomic percent, and manganese is present in the catalyst at a concentration that is between about 5 and about 40 atomic percent.
14. The catalyst of claim 1 wherein platinum is at a concentration that is between about 25 and about 35 atomic percent, indium is at a concentration that is between about 50 and about 70 atomic percent, and manganese is present in the catalyst at a concentration that is between about 10 and about 30 atomic percent.
15. The catalyst of claim 1 wherein platinum is at a concentration that is between about 25 and about 65 atomic percent, indium is at a concentration that is no more than about 55 atomic percent, tungsten is present in the catalyst at a concentration that is no more than about 40 atomic percent, and manganese is present in the catalyst at a concentration that is no more than about 40 atomic percent.
16. The catalyst of claim 1 wherein platinum is at a concentration that is between about 35 and about 55 atomic percent, indium is at a concentration that is between about 10 and about 40 atomic percent, tungsten is present in the catalyst at a concentration that is between about 10 and about 30 atomic percent, and manganese is present in the catalyst at a concentration that is between about 10 and about 30 atomic percent.