SORFC system with non-noble metal electrode compositions
First Claim
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1. A solid oxide regenerative fuel cell, comprising:
- a ceramic electrolyte;
a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode; and
a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode;
wherein the second electrode comprises less than 1 mg/cm2 of noble metal.
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Abstract
A solid oxide regenerative fuel cell includes a ceramic electrolyte, a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode, and a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode. The second electrode comprises less than 1 mg/cm2 of noble metal.
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Citations
35 Claims
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1. A solid oxide regenerative fuel cell, comprising:
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a ceramic electrolyte;
a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode; and
a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode;
wherein the second electrode comprises less than 1 mg/cm2 of noble metal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A solid oxide regenerative fuel cell, comprising:
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a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode;
a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode, wherein the second electrode comprises less than 1 mg/cm2 of noble metal; and
a first means for conducting oxygen ions from the first electrode to the second electrode when the fuel cell operates in the fuel cell mode and for conducting oxygen ions from the second electrode to the first electrode when the fuel cell operates in the electrolysis mode. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A solid oxide regenerative fuel cell, comprising:
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a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode;
a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode, wherein the second electrode comprises less than 1 mg/cm2 of noble metal;
a first means for conducting oxygen ions from the first electrode to the second electrode when the fuel cell operates in the fuel cell mode and for conducting oxygen ions from the second electrode to the first electrode when the fuel cell operates in the electrolysis mode; and
a second means for providing a sufficient reducing atmosphere to the second electrode when the fuel cell operates in the electrolysis mode to prevent the second electrode from oxidizing. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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Specification