Solid oxide fuel cell device with a component having a protective coatings and a method for making such
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/10
H01M-002/00
H01M-002/02
출원번호
US-0648415
(2003-08-25)
등록번호
US-7314678
(2008-01-01)
발명자
/ 주소
Badding,Michael E
Kalal,Peter J
Wusirika,Raja R
출원인 / 주소
Corning Incorporated
대리인 / 주소
Short,Svetlana Z.
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A solid oxide fuel cell device comprises: (a) zirconia based electrolyte; (b) at least one ectrode situated on the electrolyte; (c) a component situated in close proximity to the electrolyte, the component comprising at least one metal or metal oxide capable, at temperatures of above 625�� C., of: (
A solid oxide fuel cell device comprises: (a) zirconia based electrolyte; (b) at least one ectrode situated on the electrolyte; (c) a component situated in close proximity to the electrolyte, the component comprising at least one metal or metal oxide capable, at temperatures of above 625�� C., of: (i) migrating to the surface of this component, and (ii) being re-deposited on said at least one electrode; and (d) a protective coating situated on at least one surface of this component. The protective coating substantially prevents the at least one metal or metal oxide from leaving the surface of the component, which is situated under said protective coating. The protective coating is also being substantially impermeable to oxygen.
대표청구항▼
What is claimed is: 1. A solid oxide fuel cell device comprising: (a) zirconia based electrolyte; (b) at least one electrode situated on said electrolyte; (c) a non-electrically active component wherein the component is not in contact with electrodes and thereby not conductive and said component co
What is claimed is: 1. A solid oxide fuel cell device comprising: (a) zirconia based electrolyte; (b) at least one electrode situated on said electrolyte; (c) a non-electrically active component wherein the component is not in contact with electrodes and thereby not conductive and said component comprising at least one metal or metal oxide capable of, at temperatures of above 625�� C., (i) migrating to the surface of said component, and (ii) being re-deposited on said at least one electrode; and (d) the electrolyte comprises an edge, said electrolyte edge situated over the non-electrically active component (e) a protective coating situated on at least one surface of said component, said coating substantially preventing said at least one metal or metal oxide from leaving the surface, of said component, which is situated under said protective coating, said protective coating also being substantially impermeable to oxygen, wherein said protective coating is less than 100 μm thick. 2. The solid oxide fuel cell device of claim 1, wherein said at least one metal is Cr and said protective coating is Al2O3. 3. The solid oxide fuel cell device of claim 1, wherein said protective coating is 1 μm to 30 μm thick. 4. The solid oxide fuel cell device of claim 1, wherein said protective coating is 5 μm to 100 μm thick. 5. A solid oxide fuel cell device comprising: (a) zirconia based electrolyte; (b) at least one electrode situated on said electrolyte; (c) a non-electrically active component wherein the component is not in contact with electrodes and thereby not conductive and said component comprising at least one metal or metal oxide capable of at temperatures of above 625�� C., (i) migrating to the surface of said component, and (ii) being re-deposited on said at least one electrode; and (d) the electrolyte comprises an edge, said electrolyte edge situated over the non-electrically active component (e) a protective coating situated on at least one surface of said component, said coating substantially preventing said at least one metal or metal oxide from leaving the surface, of said component, which is situated under said protective coating, said protective coating also being substantially impermeable to oxygen wherein said at least one metal is Cr and said protective coating is selected from a group consisting of glass, zirconia and yttria-stabilized zirconia, oxides of magnesium, titanium and zinc wherein said protective coating is less than 100 μm thick. 6. The solid oxide fuel cell device of claim 5, wherein said coating is 1 μm to 100 μm, thick. 7. The solid oxide fuel cell device of claim 1, wherein at least 90% of the electrode surface area is not covered by the oxide of said at least one metal. 8. The solid oxide fuel cell device of claim 1, wherein said protective coating is a non-electrically conductive coating. 9. A solid oxide fuel cell device comprising: (a) zirconia based electrolyte; (b) at least one electrode situated on said electrolyte; (c) a non-electrically active component, wherein said component is a stainless steel metal frame not in contact with any electrodes and thereby not conductive, said metal frame comprising at least one metal which at temperatures of above 625�� C., is capable of: (i) migrating to the surface of said frame, (ii) oxidizing; and (iii) being re-deposited in the oxide form on said at least one cathode; (d) the electrolyte comprises an edge, said electrolyte edge situated over the non-electrically act component wherein said protective coating is situated on said stainless steel frame, said coating substantially preventing said metal from leaving said metal frame, said protective coating being less than 100 μm thick and being substantially impermeable to oxygen. 10. The solid oxide fuel cell device of claim 9, wherein said coating is 1 μm to 100 μm thick. 11. The solid oxide fuel cell device of claim 9, said at least one metal is Cr. 12. The solid oxide fuel cell device of claim 11, wherein said coating is an electrically non-conductive coating with a thickness of 1 μm to 100 μm. 13. The solid oxide fuel cell device of claim 11, wherein at least 70% of the coating surface of said frame is not covered by chrome or Cr2O3. 14. The solid oxide fuel cell device of claim 11, wherein at least 85% of the coating surface of said frame is not covered by chrome or Cr2O3. 15. The solid oxide fuel cell device of claim 11, wherein at least 90% of the coating surface of said frame is not covered by chrome or Cr2O3. 16. The solid oxide fuel cell device of claim 9, wherein said metal frame has a coefficient of thermal expansion CTE of 10��10-6/�� C. to 12.5��10-6/�� C. 17. The solid oxide fuel cell device of claim 16, wherein said metal frame has a CTE of 11��10-6/�� C. to 12��10-6/�� C. 18. The solid oxide fuel cell device of claim 17, wherein said metal frame has a coefficient of thermal expansion CTE of 11.2��10-6/�� C. to 11.7��10-6/�� C. 19. The solid oxide fuel cell device of claim 9, wherein said protective coating is a non-electrically conductive coating and said metal frame is not an electrical connector. 20. A solid oxide fuel cell device according to claim 1 wherein said protective nonconductive coating situated on at least one surface of said component is covering at least one surface of said component and substantially preventing said at least one metal or metal oxide from leaving the surface of said component, which is situated under said protective coating. 21. The solid oxide fuel cell device of claim 1, wherein said solid oxide fuel cell device does not comprise a bipolar plate.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (6)
Donald Jaffrey AU, Electrical conductivity in a fuel cell assembly.
Ketcham Thomas D. (Big Flats NY) St. Julien Dell J. (Watkins Glen NY) Cutler Willard A. (Goleta CA), Fluid heater utilizing laminar heating element having conductive layer bonded to flexible ceramic foil substrate.
Quadakkers Willem,NLX ; Baumanns Ferdinand,DEX ; Nickel Hubertus,DEX, Metallic bipolar plate for high-temperature fuel cells and method of making same.
Aitken Bruce G. (Corning NY) Faber Margaret K. (Corning NY) Ketcham Thomas D. (Big Flats NY) St. Julien Dell J. (Watkins Glen NY), Solid electrolyte fuel cells.
Ketcham Thomas D. (Big Flats NY) Sanderson ; deceased Wayne B. (Corning NY by Stuart R. Sanderson ; administrator) St. Julien Dell J. (Watkins Glen NY) Wexell Kathleen A. (Corning NY), Thin flexible sintered structures.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.