Method of making sulfur tolerant composite cermet electrodes for solid oxide electrochemical cells
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-005/12
H01M-008/10
출원번호
US-0072834
(1987-07-13)
발명자
/ 주소
Isenberg Arnold O. (Pittsburgh PA)
출원인 / 주소
Westinghouse Electric Corp. (Pittsburgh PA 02)
인용정보
피인용 횟수 :
19인용 특허 :
11
초록▼
An electrochemical apparatus is made containing an exterior electorde bonded to the exterior of a tubular, solid, oxygen ion conducting electrolyte where the electrolyte is also in contact with an interior electrode, said exterior electrode comprising particles of an electronic conductor contacting
An electrochemical apparatus is made containing an exterior electorde bonded to the exterior of a tubular, solid, oxygen ion conducting electrolyte where the electrolyte is also in contact with an interior electrode, said exterior electrode comprising particles of an electronic conductor contacting the electrolyte, where a ceramic metal oxide coating partially surrounds the particles and is bonded to the electrolyte, and where a coating of an ionic-electronic conductive material is attached to the ceramic metal oxide coating and to the exposed portions of the particles.
대표청구항▼
A method of bonding a separate, porous, active layer on an electronically conductive fuel cell electrode attached to a solid electrolyte, oxygen ion transporting oxide layer comprising the steps: (A) forming a coating of particles of an electronic conductor selected from the group consisting of nick
A method of bonding a separate, porous, active layer on an electronically conductive fuel cell electrode attached to a solid electrolyte, oxygen ion transporting oxide layer comprising the steps: (A) forming a coating of particles of an electronic conductor selected from the group consisting of nickel, cobalt, and mixtures thereof on a first surface of an oxygen ion transporting, solid oxide electrolyte layer comprising zirconia; (B) applying a source of oxygen to a second surface of said solid oxide electrolyte layer; (C) applying a metal halide vapor to said first surface of said solid oxide electrolyte layer; (D) heating said oxygen transporting, solid oxide electrolyte layer to a temperature sufficient to induce oxygen to diffuse through said oxide layer and react with said metal halide vapor, whereby essentially only an ion conductive metal oxide skeletal structure, comprising zirconia, grows partially around said particles of said electronic conductor, embedding them, and forming an electrode attached to the electrolyte; (E) coating both the particles and the ion conducting metal oxide skeletal structure with a separate, salt coating which upon heating will form an oxide selected from the group consisting of ceria, doped ceria, uranium oxide, doped uranium oxide, and mixtures thereof; and then (F) heating the salt coated structure at a temperature of from about 500°C. to about 1400°C., to form a separate, porous, ionic-electronic conductive, active coating comprising an oxide selected from the group consisting of ceria, doped ceria, uranium oxide, doped uranium oxide, and mixtures thereof, where the ionic-electronic conductive coating formed in step (F) is effective to provide electrochemically active sites over its entire surface, and where the heating in step (F) is effective to diffuse elements from the salt coating into the skeletal structure, introducing increased electronic conduction into the skeletal structure.
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이 특허에 인용된 특허 (11)
Trocciola John C. (Glastonbury CT) Schroll Craig R. (West Hartford CT) Vine Raymond W. (Avon CT), Ceria matrix material for molten carbonate fuel cell.
Isenberg Arnold O. (Forest Hills Boro PA) Ruka Roswell J. (Churchill Boro PA), Protective interlayer for high temperature solid electrolyte electrochemical cells.
Lehmann,Dieter; Heimann,Detlef; Oehler,Gudrun; Thiemann Handler,Sabine, Cermet electrodes containing platinum for the electrochemical reduction of oxygen.
Hong,Seong Ahn; Oh,In Hwan; Lim,Tae Hoon; Nam,Suk Woo; Ha,Heung Yong; Yoon,Sung Pil; Han,Jonghee, Electrode having microstructure of extended triple phase boundary by porous ion conductive ceria film coating and method to manufacture the said electrode.
Shen Yousheng (Salt Lake City UT) Joshi Ashok V. (Salt Lake City UT) Taylor Dale M. (Salt Lake City UT) Boettcher Michael J. (West Jordan UT) Krist Kevin (Palatine IL) Virkar Anil V. (Salt Lake City , Enhancement of mechanical properties of ceramic membranes and solid electrolytes.
Lucas, Thomas M.; Zhu, Weizhong; Vailionis, Thomas, Method and manufacturing assembly for sintering fuel cell electrodes and impregnating porous electrodes with electrolyte powders by induction heating for mass production.
Shen Yousheng (Salt Lake City UT) Joshi Ashok V. (Salt Lake City UT) Krist Kevin (Palatine IL) Liu Meilin (Norcross GA) Virkar Anil V. (Salt Lake City UT), Mixed ionic-electronic conducting composites for oxygen separation and electrocatalysis.
Liu Meilin (Salt Lake City UT) Joshi Ashok V. (Salt Lake City UT) Shen Yousheng (Salt Lake City UT) Krist Kevin (Palatine IL), Mixed ionic-electronic conductors for oxygen separation and electrocatalysis.
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.
Wachsman Eric D. ; Jayaweera Palitha ; Lowe David M. ; Pound Bruce G., Stable high conductivity functionally gradient compositionally layered solid state electrolytes and membranes.
Wachsman Eric D. ; Jayaweera Palitha ; Lowe David M. ; Pound Bruce G., Stable high conductivity functionally gradient compositionally layered solid state electrolytes and membranes.
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