Solid oxide fuel cells, electrolyzers, and sensors, and methods of making and using the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/1253
C25B-009/08
G01N-027/406
G01N-027/40
C25B-013/04
H01M-008/1246
H01M-008/124
출원번호
US-0093445
(2013-11-30)
등록번호
US-9670586
(2017-06-06)
발명자
/ 주소
Deininger, Mark A.
Budaragin, Leonid V.
Fisher, Paul D.
Pozvonkov, Mikhail
Spears, II, D. Morgan
출원인 / 주소
FCET, Inc.
대리인 / 주소
Thrive IP®
인용정보
피인용 횟수 :
2인용 특허 :
145
초록▼
The present invention provides solid oxide fuel cells, solid oxide electrolyzer cells, solid oxide sensors, components of any of the foregoing, and methods of making and using the same. In some embodiments, a solid oxide fuel cell comprises an air electrode (or cathode), a fuel electrode (or anode),
The present invention provides solid oxide fuel cells, solid oxide electrolyzer cells, solid oxide sensors, components of any of the foregoing, and methods of making and using the same. In some embodiments, a solid oxide fuel cell comprises an air electrode (or cathode), a fuel electrode (or anode), an electrolyte interposed between the air electrode and the fuel electrode, and at least one electrode-electrolyte transition layer. Other embodiments provide novel methods of producing nano-scale films and/or surface modifications comprising one or more metal oxides to form ultra-thin (yet fully-dense) electrolyte layers and electrode coatings. Such layers and coatings may provide greater ionic conductivity and increased operating efficiency, which may lead to lower manufacturing costs, less-expensive materials, lower operating temperatures, smaller-sized fuel cells, electrolyzer cells, and sensors, and a greater number of applications.
대표청구항▼
1. A solid oxide cell comprising: an electrode;an electrolyte comprising a plurality of layers in communication with the electrode, wherein at least some of the layers proximal to the electrode comprise yttria-stabilized zirconia nanoparticles having an average particle size of 50-100 nm, andyttria-
1. A solid oxide cell comprising: an electrode;an electrolyte comprising a plurality of layers in communication with the electrode, wherein at least some of the layers proximal to the electrode comprise yttria-stabilized zirconia nanoparticles having an average particle size of 50-100 nm, andyttria-stabilized zirconia powder having an average particle size of about 1 μm, andyttria-stabilized zirconia powder having an average particle size of about 45 μm, and at least some of the layers distal from the electrode comprise no nanoparticles or powder; and an electrode-electrolyte transition layer having a thickness ranging from 3 nm to 100 nm interposed between the electrode and the electrolyte. 2. The solid oxide cell as claimed in claim 1, wherein the electrode-electrolyte transition layer has a thickness less than about 10 nm. 3. The solid oxide cell as claimed in claim 1, wherein the electrolyte comprises a compositional gradient. 4. The solid oxide cell as claimed in claim 3, wherein the compositional gradient comprises a region of the electrolyte proximal to the electrode and a region of electrolyte distal from the electrode, wherein the region of the electrolyte proximal to the electrode comprises a greater amount of electrode material than the region of the electrolyte distal from the electrode. 5. The solid oxide cell as claimed in claim 1, further comprising at least one catalytic material disposed in the electrode. 6. The solid oxide cell as claimed in claim 5, wherein the at least one catalytic material is chosen from platinum, palladium, rhodium, nickel, cerium, gold, silver, zinc, lead, ruthenium, rhenium, and mixtures thereof. 7. The solid oxide cell as claimed in claim 1, wherein the electrolyte comprises a plurality of metal oxide nanocrystalline grains having an average size of less than about 50 nm and wherein the electrolyte has a porosity less than about 5%. 8. The solid oxide cell as claimed in claim 1, wherein the solid oxide cell is a fuel cell. 9. The solid oxide cell as claimed in claim 1, wherein the solid oxide cell is an electrolyzer cell. 10. The solid oxide cell as claimed in claim 1, wherein the solid oxide cell is a sensor. 11. The solid oxide cell as claimed in claim 1, wherein the electrolyte comprises yttria-stabilized zirconia. 12. The solid oxide cell as claimed in claim 11, wherein the yttria-stabilized zirconia comprises 1-50 molar % yttria. 13. The solid oxide cell as claimed in claim 1, wherein the electrode comprises lanthanum strontium doped manganite. 14. The solid oxide cell as claimed in claim 1, wherein the electrode comprises a porous steel alloy. 15. The solid oxide cell as claimed in claim 13, wherein the electrode has an average pore size of about 15 μm and a porosity of about 30%.
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