Optimized lanthanum ferrite-based cathodes for anode-supported SOFCs

Simner SP; Bonnett JF; Canfield NL; Meinhardt KD; Sprenkle VL; Stevenson JW

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Electrochemical and Solid State Letters, Vol.5, No.7, A173-A175, 2002

Optimized lanthanum ferrite-based cathodes for anode-supported SOFCs

Simner SP, Bonnett JF, Canfield NL, Meinhardt KD, Sprenkle VL, Stevenson JW

Three cathode compositions (La0.8Sr0.2FeO3-delta,La0.7Sr0.3 Fe0.8Ni0.2O3-delta, and LaNi0.6Fe0.4O3-delta) have been tested as solid oxide fuel cell (SOFC) cathodes at operating temperatures from 650 to 750degrees C. Sintering temperatures were established for each cathode composition to provide optimized cell performance. La0.8Sr0.2FeO3-delta exhibited the highest power density (>900 mW/cm(2) at 750degrees C and 0.7 V), and indicated excellent performance stability over a 300 h period. (C) 2002 The Electrochemical Society.