A Study Of In-Situ Multi Layer Tape Casting Ba3ca1.18nb1.82o9-Delta Membrane For Proton Conducting Solid Oxide Fuel Cell

In this study, Ba3Ca1.18Nb1.82O9-delta (BCN18) /BCN18-NiO membrane was prepared by in-situ Multilayer tape casting method. The starting materials were BaCO3, CaCO3 and Nb2O5 for BCN18 Electrolyte and BaCO3, CaCO3, Nb2O5, NiO and starch for BCN18-NiO anode. The perovskite phase of anode and electrolyte were then formed by in-situ solid reaction. The phase characterizations and microstructures were studied by X-ray diffraction (XRD) and Scan Electronic Microscopy (SEM). The anode-electrolyte bi-layers were sintered at 1450 degrees C. The electrolytes were extremely dense with pure perovskite phase and the thickness was about 25 mu m. The anodes were porous and no obvious reaction was found between NiO and BCN18. The open current voltage of cell with BCN18 electrolyte is 1.03V at 700 degrees C and 1.01V at 600 degrees C. With La0.3Sr0.7FeO3-delta as cathode, the cell performance is 33mW/cm(2) at 700 degrees C and 25mW/cm(2) at 600 degrees C.