Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Method of making a fuel cell – fuel cell stack – or...
Reexamination Certificate
2011-06-21
2011-06-21
Conley, Helen O (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Method of making a fuel cell, fuel cell stack, or...
C429S523000, C429S400000, C429S219000
Reexamination Certificate
active
07964324
ABSTRACT:
A method for improving performance of an SOFC by impregnation of the cathode with metallic silver. A solution of AgNO3in 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%.
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Jain Kailash Chandra
Keller Joseph M.
Kerr Rick D.
Wang Su-Chee Simon
Conley Helen O
Delphi Technologies Inc.
Twomey Thomas N.
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