Fabrication of cathode supported solid oxide fuel cell by multi-layer tape casting and co-firing method

Abstract: La0.3Sr0.7FeO3-δ (LSF)/CeO2 cathode supported Ce0.8Sm0.2O2-δ (SDC) electrolyte was prepared by a simple multilayer tape casting and co-firing method. SDC electrolyte slurry and LSF/CeO2 cathode slurry were optimized and the green bi-layer tapes were co-fired at different temperature. Phase characterizations and microstructures of electrolyte and cathode were studied by X-ray diffraction (XRD) and Scan Electronic Microscopy (SEM). No additional phase peak line was observed in electrolyte and cathode support when the sintering temperature lower was than 1400°C. The electrolytes were extremely dense with the thickness of about 20μm. The cathode support was porous with electrical conductivity of about 4.21S/cm at 750°C. With Ni/SDC as anode, Open Current Voltage and maximum power density reached 0.61V and 233mWcm−2 at 750°C, respectively. [Copyright &y& Elsevier]