Dilute alloy catalysts for electrochemical CO2 reduction
A product includes a dilute alloy catalyst for carbon dioxide reduction. The catalyst has a majority component and at least one minority component. The majority component is present in a concentration of greater than 90 atomic percent of the catalyst. The majority component is copper, and each minority component is selected from the group consisting of: a transition metal, a main group metal, a lanthanide, and a semimetal. A method includes forming a product on a cathode. The product includes a dilute alloy catalyst for carbon dioxide reduction. The catalyst has a majority component and at least one minority component. The majority component is present in a concentration of greater than 90 atomic percent of the catalyst. The majority component is copper, and each minority component is selected from the group consisting of: a transition metal, a main group metal, a lanthanide, and a semimetal.
1. A product, the product comprising:
a dilute alloy catalyst for carbon dioxide reduction, the catalyst having a majority component and at least one minority component; and a cathode, the catalyst being coupled to the cathode,
wherein the majority component of the catalyst is present in a concentration of greater than 90 atomic percent of the catalyst,
wherein the majority component is copper,
wherein each minority component of the catalyst is selected from the group consisting of: a transition metal, a main group metal, a lanthanide, and a semimetal.
2. The product as recited in claim 1 , wherein the catalyst is porous, wherein at least 50% of the catalyst by volume is void space.
3. The product as recited in claim 1 , wherein the at least one minority component includes aluminum in a concentration of 0.1 to less than 10 atomic percent of the catalyst.
4. The product as recited in claim 1 , wherein the at least one minority component includes gallium in a concentration of 0.1 to less than 10 atomic percent of the catalyst.
5. The product as recited in claim 1 , wherein the at least one minority component is selected from the group consisting of: gold and silver.
6. The product as recited in claim 1 , wherein the at least one minority component includes an element selected from the group consisting of: titanium, calcium, and magnesium.
7. The product as recited in claim 1 , wherein the at least one minority component includes boron.
8. The product as recited in claim 1 , wherein the at least one minority component is present in a concentration of less than 6 atomic percent of the catalyst.
9. The product as recited in claim 1 , wherein the catalyst is configured to catalyze the reduction of carbon dioxide to methane.
10. The product as recited in claim 1 , wherein the catalyst is configured to catalyze the reduction of carbon dioxide to ethylene.
11. The product as recited in claim 1 , wherein the catalyst is a single phase alloy of the majority component and the at least one minority component.
12. The product as recited in claim 11 , wherein the catalyst includes ball milled single phase particles of the majority component and the at least one minority component.
13. The product as recited in claim 1 , comprising a cathode, the catalyst being coupled to the cathode.
14. The product as recited in claim 13 , comprising a vessel and an anode, the cathode and the anode being positioned in the vessel and spaced apart from one another, the vessel having a membrane positioned between the cathode and the anode.
15. A method for forming the product of claim 1 , the method comprising: forming the catalyst on the cathode.
16. The method as recited in claim 15 , wherein forming the catalyst on the cathode includes applying the catalyst directly to the cathode.
17. The method as recited in claim 16 , wherein applying the catalyst directly to the cathode includes magnetron sputtering.
18. The method as recited in claim 16 , wherein applying the catalyst directly to the cathode includes e-beam evaporation.
19. The method as recited in claim 16 , wherein applying the catalyst directly to the cathode includes electrodeposition.
20. The method as recited in claim 15 , wherein the catalyst is integrated into an ink, wherein forming the catalyst on the cathode includes ink jetting.
21. The method as recited in claim 15 , comprising positioning the cathode in a vessel and positioning an anode in the vessel, the vessel having a membrane positioned between the cathode and anode.