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

Keller, Joseph M.; Haltiner, Jr., Karl J.; Mukerjee, Subhasish; England, Diane M.; Reisdorf, Gary F.; Cooper, Steven L.; Vilders, III, Willem

DOE OSTI · 1531648

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

Keller, Joseph M.·Haltiner, Jr., Karl J.·Mukerjee, Subhasish·England, Diane M.·Reisdorf, Gary F.·Cooper, Steven L.·Vilders, III, Willem

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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.

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30 DIRECT ENERGY CONVERSION 36 MATERIALS SCIENCE 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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Keller, Joseph M., Haltiner, Jr., Karl J., Mukerjee, Subhasish, England, Diane M., Reisdorf, Gary F., Cooper, Steven L., Vilders, III, Willem. 2010-08-24. Method and apparatus for forming electrode interconnect contacts for a solid-oxide fuel cell stack. https://www.osti.gov/biblio/1531648

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