Composite (La, Sr)MnO3–YSZ cathode for SOFC

(La, Sr)MnO3 (LSM)–Y doped ZrO2 (YSZ) composite was prepared using YSZ colloidal suspension (initial YSZ particle size ¨100 nm), YSZ and LSM polymer precursors on dense substrates at 800 -C annealing temperature. The results of a symmetrical LSM–YSZ composite cell test showed the area specific resistance for overpotential of 0.14 V cm 2 at 800 -C, which indicated that the LSM–YSZ composite could be a potential candidate for cathode in SOFCs. The performance of the cell with the LSM–YSZ composite cathode and Ni-YSZ anode was investigated and the power density of about 0.26 W cm 2 was obtained at 850 -C using hydrogen fuel.