SORFC system with non-noble metal electrode compositions
First Claim
Patent Images
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.
4 Assignments
0 Petitions
Accused Products
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.
-
Citations
48 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A solid oxide regenerative fuel cell, comprising:
-
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)
-
-
28. A solid oxide regenerative fuel cell, comprising:
-
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)
-
-
36. A method of operating a solid oxide regenerative fuel cell, comprising:
-
operating the solid oxide regenerative fuel cell in a fuel cell mode by providing a fuel to a negative electrode and providing an oxidizer to a positive electrode to generate electricity and water vapor at the negative electrode;
operating the solid oxide regenerative fuel cell in an electrolysis mode by providing electricity to the fuel cell and providing water vapor to the negative electrode to generate fuel at the negative electrode and oxygen at the positive electrode; and
providing a sufficient reducing atmosphere to the negative electrode when the solid oxide regenerative fuel cell operates in the electrolysis mode to prevent the negative electrode from oxidizing, wherein the negative electrode comprises less than 1 mg/cm2 of noble metal. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
-
Specification