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Title: Method and apparatus for forming electrode interconnect contacts for a solid-oxide fuel cell stack

Abstract

An electrical interconnect for a solid-oxide fuel cell stack assembly, including a novel sintering paste and an improved manufacturing process for an anode and cathode electrical contacts is disclosed. On the anode side, the paste contains a metallic oxide such as NiO, and an amount of sacrificial pore-forming particles, such as carbon particles or polymer spheres, which are vaporized during sintering of the paste, resulting in a very porous connection having good electrical conductivity and good adhesion. A preferred level of pore-former in the paste is about 40 volume percent. On the cathode side, the paste contains a noble metal such as for example, gold, platinum, palladium or rhodium, and an amount of the sacrificial pore-forming particles. The paste may be applied to the surfaces in a grid pattern or, because the resulting contact is porous after sintering, it may be applied as a continuous layer.

Inventors:
; ; ; ; ; ;
Issue Date:
Research Org.:
Delphi Technologies, Inc., Troy, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531648
Patent Number(s):
7,781,123
Application Number:
11/145,647
Assignee:
Delphi Technologies, Inc. (Troy, MI)
DOE Contract Number:  
FC26-02NT41246
Resource Type:
Patent
Resource Relation:
Patent File Date: 2005-06-06
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 30 DIRECT ENERGY CONVERSION

Citation Formats

Keller, Joseph M., Haltiner, Jr., Karl J., Mukerjee, Subhasish, England, Diane M., Reisdorf, Gary F., Cooper, Steven L., and Vilders, III, Willem. Method and apparatus for forming electrode interconnect contacts for a solid-oxide fuel cell stack. United States: N. p., 2010. Web.
Keller, Joseph M., Haltiner, Jr., Karl J., Mukerjee, Subhasish, England, Diane M., Reisdorf, Gary F., Cooper, Steven L., & Vilders, III, Willem. Method and apparatus for forming electrode interconnect contacts for a solid-oxide fuel cell stack. United States.
Keller, Joseph M., Haltiner, Jr., Karl J., Mukerjee, Subhasish, England, Diane M., Reisdorf, Gary F., Cooper, Steven L., and Vilders, III, Willem. Tue . "Method and apparatus for forming electrode interconnect contacts for a solid-oxide fuel cell stack". United States. https://www.osti.gov/servlets/purl/1531648.
@article{osti_1531648,
title = {Method and apparatus for forming electrode interconnect contacts for a solid-oxide fuel cell stack},
author = {Keller, Joseph M. and Haltiner, Jr., Karl J. and Mukerjee, Subhasish and England, Diane M. and Reisdorf, Gary F. and Cooper, Steven L. and Vilders, III, Willem},
abstractNote = {An electrical interconnect for a solid-oxide fuel cell stack assembly, including a novel sintering paste and an improved manufacturing process for an anode and cathode electrical contacts is disclosed. On the anode side, the paste contains a metallic oxide such as NiO, and an amount of sacrificial pore-forming particles, such as carbon particles or polymer spheres, which are vaporized during sintering of the paste, resulting in a very porous connection having good electrical conductivity and good adhesion. A preferred level of pore-former in the paste is about 40 volume percent. On the cathode side, the paste contains a noble metal such as for example, gold, platinum, palladium or rhodium, and an amount of the sacrificial pore-forming particles. The paste may be applied to the surfaces in a grid pattern or, because the resulting contact is porous after sintering, it may be applied as a continuous layer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {8}
}

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Works referenced in this record:

Electrode substrate for fuel cell
patent, April 2000