A Study of In-Situ Multilayer Tape Casting Ba3Ca1.18 Nb1.82O9-δ Membrane for Proton Conducting Solid Oxide Fuel CellReport as inadecuate




A Study of In-Situ Multilayer Tape Casting Ba3Ca1.18 Nb1.82O9-δ Membrane for Proton Conducting Solid Oxide Fuel Cell - Download this document for free, or read online. Document in PDF available to download.

In this study, Ba3Ca1.18Nb1.82O9-δ 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℃. The electrolytes were extremely dense with pure perovskite phase and the thickness was about 25μm. 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°C and 1.01V at 600°C. With La0.3Sr0.7FeO3-δ as cathode, the cell performance is 33mW-cm2 at 700°C and 25mW-cm2 at 600°C.

KEYWORDS

tape casting, proton conducting ceramics, slurry, co-firing

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Author: Shang-quan Zhang

Source: http://www.scirp.org/



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