Method and apparatus for gasketing a fuel cell
Abstract
In a solid-oxide fuel cell assembly comprising a plurality of components having electrically-conductive mating surfaces therebetween, the surfaces are sealed by gasket elements that include first and second silver braze alloy layers and a dielectric layer, formed preferably of yttrium-stabilized zirconia (YSZ), disposed between the alloy layers. The alloy is capable of bonding to many ceramics, including YSZ, and is readily brazed to the oxide layer formed on many metals at elevated temperatures. Because the braze alloy is electrically conductive, a dielectric layer must be included to break conductivity in bonding applications where electrical insulation is required. YSZ functions as a reliable insulator and will not crystallize or fracture as do prior art glass insulators. The assembly is useful as an auxiliary power unit in a vehicle.
- Inventors:
- Issue Date:
- Research Org.:
- Delphi Technologies, Inc., Troy, MI (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1531529
- Patent Number(s):
- 7217300
- Application Number:
- 10/607,609
- Assignee:
- Delphi Technologies, Inc. (Troy, MI)
- 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:
- FC26-02NT41246
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2003-06-27
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE
Citation Formats
Haltiner, Jr., Karl J., and Reisdorf, Gary F. Method and apparatus for gasketing a fuel cell. United States: N. p., 2007.
Web.
Haltiner, Jr., Karl J., & Reisdorf, Gary F. Method and apparatus for gasketing a fuel cell. United States.
Haltiner, Jr., Karl J., and Reisdorf, Gary F. Tue .
"Method and apparatus for gasketing a fuel cell". United States. https://www.osti.gov/servlets/purl/1531529.
@article{osti_1531529,
title = {Method and apparatus for gasketing a fuel cell},
author = {Haltiner, Jr., Karl J. and Reisdorf, Gary F.},
abstractNote = {In a solid-oxide fuel cell assembly comprising a plurality of components having electrically-conductive mating surfaces therebetween, the surfaces are sealed by gasket elements that include first and second silver braze alloy layers and a dielectric layer, formed preferably of yttrium-stabilized zirconia (YSZ), disposed between the alloy layers. The alloy is capable of bonding to many ceramics, including YSZ, and is readily brazed to the oxide layer formed on many metals at elevated temperatures. Because the braze alloy is electrically conductive, a dielectric layer must be included to break conductivity in bonding applications where electrical insulation is required. YSZ functions as a reliable insulator and will not crystallize or fracture as do prior art glass insulators. The assembly is useful as an auxiliary power unit in a vehicle.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
Works referenced in this record:
Series planar design for solid electrolyte oxygen pump
patent, May 1998
- Carolan, Michael Francis; Dyer, Paul N.; Minford, Eric
- US Patent Document 5,750,279