Sintered electrode for solid oxide fuel cells
Abstract
A solid oxide fuel cell fuel electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, which is then dried. An overlayer is applied to the underlayer and then dried. The dried underlayer and overlayer are then sintered to form a fuel electrode. Both the underlayer and the overlayer comprise a combination of electrode metal such as nickel, and stabilized zirconia such as yttria-stabilized zirconia, with the overlayer comprising a greater percentage of electrode metal. The use of more stabilized zirconia in the underlayer provides good adhesion to the electrolyte of the fuel cell, while the use of more electrode metal in the overlayer provides good electrical conductivity. The sintered fuel electrode is less expensive to produce compared with conventional electrodes made by electrochemical vapor deposition processes. The sintered electrodes exhibit favorable performance characteristics, including good porosity, adhesion, electrical conductivity and freedom from degradation.
- Inventors:
-
- Pittsburgh, PA
- Bryan, TX
- Issue Date:
- Research Org.:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- OSTI Identifier:
- 872310
- Patent Number(s):
- 5908713
- Assignee:
- Siemens Westinghouse Power Corporation (Orlando, FL)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- FC21-91MC28055
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- sintered; electrode; solid; oxide; fuel; cells; cell; produced; sintering; process; underlayer; applied; electrolyte; form; slurry; dried; overlayer; comprise; combination; metal; nickel; stabilized; zirconia; yttria-stabilized; comprising; percentage; provides; adhesion; electrical; conductivity; expensive; produce; compared; conventional; electrodes; electrochemical; vapor; deposition; processes; exhibit; favorable; performance; characteristics; including; porosity; freedom; degradation; performance characteristics; fuel cell; layer comprising; chemical vapor; fuel cells; oxide fuel; solid oxide; vapor deposition; electrical conductivity; deposition process; fuel electrode; stabilized zirconia; layer provides; deposition processes; sintering process; electrode metal; electrochemical vapor; yttria-stabilized zirconia; performance characteristic; conventional electrodes; cell fuel; /429/29/427/
Citation Formats
Ruka, Roswell J, and Warner, Kathryn A. Sintered electrode for solid oxide fuel cells. United States: N. p., 1999.
Web.
Ruka, Roswell J, & Warner, Kathryn A. Sintered electrode for solid oxide fuel cells. United States.
Ruka, Roswell J, and Warner, Kathryn A. Fri .
"Sintered electrode for solid oxide fuel cells". United States. https://www.osti.gov/servlets/purl/872310.
@article{osti_872310,
title = {Sintered electrode for solid oxide fuel cells},
author = {Ruka, Roswell J and Warner, Kathryn A},
abstractNote = {A solid oxide fuel cell fuel electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, which is then dried. An overlayer is applied to the underlayer and then dried. The dried underlayer and overlayer are then sintered to form a fuel electrode. Both the underlayer and the overlayer comprise a combination of electrode metal such as nickel, and stabilized zirconia such as yttria-stabilized zirconia, with the overlayer comprising a greater percentage of electrode metal. The use of more stabilized zirconia in the underlayer provides good adhesion to the electrolyte of the fuel cell, while the use of more electrode metal in the overlayer provides good electrical conductivity. The sintered fuel electrode is less expensive to produce compared with conventional electrodes made by electrochemical vapor deposition processes. The sintered electrodes exhibit favorable performance characteristics, including good porosity, adhesion, electrical conductivity and freedom from degradation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
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