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Fuel cell electrode interconnect contact material encapsulation and method

United States Patent

May 31, 2016
View the Complete Patent at the US Patent & Trademark Office
A fuel cell stack includes a plurality of fuel cell cassettes each including a fuel cell with an anode and a cathode. Each fuel cell cassette also includes an electrode interconnect adjacent to the anode or the cathode for providing electrical communication between an adjacent fuel cell cassette and the anode or the cathode. The interconnect includes a plurality of electrode interconnect protrusions defining a flow passage along the anode or the cathode for communicating oxidant or fuel to the anode or the cathode. An electrically conductive material is disposed between at least one of the electrode interconnect protrusions and the anode or the cathode in order to provide a stable electrical contact between the electrode interconnect and the anode or cathode. An encapsulating arrangement segregates the electrically conductive material from the flow passage thereby, preventing volatilization of the electrically conductive material in use of the fuel cell stack.
Derose; Anthony J. (Rochester, NY), Haltiner, Jr.; Karl J. (Fairport, NY), Gudyka; Russell A. (Rochester, NY), Bonadies; Joseph V. (Clarkston, MI), Silvis; Thomas W. (Flushing, MI)
Delphi Technologies, Inc. (Troy, MI)
14/ 036,342
September 25, 2013
GOVERNMENT-SPONSORED STATEMENT This invention was made with the United States Government support under Contract DE-NT003894 awarded by the U.S. Department of Energy. The Government has certain rights in this invention.