Intermediate Temperature Solid Oxide Fuel Cells With Bi2O3–Eu2O3 Infiltrated La0.8Sr0.2MnO3 Cathodes

Abstract

The fuel cell performance of the anode supported cell with Eu2O3 doped Bi2O3 infiltrated La0.8Sr0.2MnO3(LSM)–Zr0.92Y0.16O2.08(YSZ) composite cathode, Ni-YSZ anode, and YSZ electrolyte was examined in the temperature range 850–650°C. The cell performance was improved by infiltrating the nanoparticle Bi2O3–Eu2O3 solid solution into the porous LSM-YSZ cathode. The power density of the cell with the LSM-LSZ cathode was enhanced from 0.28 W/cm2 to 0.52 W/cm2 at 0.7 V and 750°C by infiltration of (Bi2O3)0.7(Eu2O3)0.3. The improvement of the power density was explained by decreasing the electrode resistance for oxygen reduction on the cathode. No significant degradation of the power density was observed within 200 h at 750°C and 0.7 V.