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AssigneeDelphi Technologies, Inc.
InventorsSu-Chee Simon Wang, Kailash Chandra Jain, Joseph M. Keller, Rick D. Kerr
Estimating the term…
A method for improving performance of an SOFC by impregnation of the cathode with metallic silver. A solution of AgNO3 in acetonitrile is imbibed into a perovskite cathode fabricated on a electrolyte layer supported by an anode, defining an SOFC cell. The cathode imbibition may be repeated a plurality of times as may be needed depending upon the thickness of the cathode. The amount of solution soaked into the cathode results a total final weight percent of Ag in the cathode between about 0.5% and about 10%. The cathode is then fired in air at high temperature to drive off the acetonitrile and to reduce the silver ions to metallic silver. In this way, cathode electrical resistance may be reduced by as much as 52%.
A method for reducing electrical resistance in a fuel cell having an anode, an electrolyte, and a cathode, comprising the steps of:
A fuel cell comprising an anode, an electrolyte, and a cathode, wherein said cathode has been impregnated with a solution of a silver salt in a polar organic solvent and subsequently fired to a temperature of at least 600° C. to drive off said polar organic solvent and to reduce said silver salt to metallic silver.
Dependencies are inferred from the claim text.