Sulfur-tolerant anode material for direct hydrocarbon solid oxide fuel cells
In one aspect, the present subject matter is directed to a composite anode for a hydrocarbon solid oxide fuel cell, the anode comprising a layered perovskite ceramic and a bi-metallic alloy.
1. A composite anode for a hydrocarbon solid oxide fuel cell, the anode comprising a layered perovskite ceramic and a bi-metallic alloy, wherein the layered perovskite comprises Pr 0.8 Sr 1.2 (Co,Fe) 0.8 Nb 0.2 O 4 .
2. The anode of claim 1 , wherein the bi-metallic alloy comprises Co—Fe.
3. The anode of claim 1 , wherein the anode is configured to be oxidized and comprise a cubic perovskite.
4. The anode of claim 1 , wherein the layered perovskite ceramic has a lattice spacing of less than 0.5 nanometers.
5. The anode of claim 1 , wherein the layered perovskite ceramic has a lattice spacing of less than 0.3 nanometers.
6. A hydrocarbon solid oxide fuel cell comprising: an anode, the anode comprising layered perovskite ceramic and a bi-metallic alloy, wherein the anode comprises Pr 0.8 Sr 1.2 (Co,Fe) 0.8 Nb 0.2 O 4 ; a cathode; and an electrolyte.
7. The fuel cell of claim 6 , wherein the bi-metallic alloy comprise Co—Fe.
8. The fuel cell of claim 6 , wherein the cathode comprises Ba 0.9 Co 0.7 Fe 0.2 Nb 0.1 O 3 .
9. The fuel cell of claim 6 , wherein the electrolyte comprises La 0.8 Sr 0.2 Ga 0.83 Mg 0.17 O 3 .
10. The fuel cell of claim 6 , wherein the cathode comprises Ba 0.9 Co 0.7 Fe 0.2 Nb 0.1 O 3 and the electrolyte comprises La 0.8 Sr 0.2 Ga 0.83 Mg 0.17 O 3 .
11. A method of forming a composite anode for a hydrocarbon solid oxide fuel cell, the method comprising: printing electrode ink on an electrolyte surface, the electrode ink comprising a layered perovskite ceramic and a bi-metallic alloy, wherein the layered perovskite comprises Pr 0.8 Sr 1.2 (Co,Fe) 0.8 Nb 0.2 O 4 .
12. The method of claim 11 , wherein the bi-metallic alloy comprise Co—Fe.
13. The method of claim 11 , further comprising oxidizing the anode to form a cubic perovskite.