A–site deficient calcium doped lanthanum ferrite (LCF) powders are synthesized and tested to characterize their electrochemical properties for use as cathode materials in single–step co–fired solid oxide fuel cells (SOFCs). Four–probe conductivity and oxygen permeability tests show superior performance compared to conventional SOFC cathode materials. A point–defect model is applied to interpret the experimental data yielding concentrations of the predominant defects as a function of pO2 and temperature.
Revised: September 28, 2009 |
Published: May 5, 2009
Citation
Yoon K.J., P. Zink, S. Gopalan, U.B. Pal, and L.R. Pederson. 2009.Defect Chemistry and Electrical Properties of (La0.8Ca0.2)(0.95)FeO3-delta.Journal of the Electrochemical Society 156, no. 7:B795-B800.PNNL-SA-62702.