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| Home > Publications database > Effect of sintering conditions on the phase and microstructure features of Ba1.015Zr0.8-xCe0.2YxO3-δ proton conducting cell components |
| Home > Publications database > Effect of sintering conditions on the phase and microstructure features of Ba1.015Zr0.8-xCe0.2YxO3-δ proton conducting cell components |
| Conference Presentation (After Call) | FZJ-2022-02542 |
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2022
Please use a persistent id in citations: http://hdl.handle.net/2128/31400
Abstract: Ceramic proton conductors of the type Ba1.015Zr0.8-xCe0.2YxO3-δ (BZCY) where x = 0.175 and 0.24 were prepared via a modified reactive solid state synthesis route from stoichiometric mixtures of BaCO3 and the corresponding oxides under addition of minor amount of NiO as a sintering aid. Ba excess of 1.5 mol. % was added to compensate possible Ba evaporation during the thermal treatments as reported previously. From the pre-heated powders half-cell assemblies consisting of a BZCY solid electrolyte layer on BZCY:NiO anode support were prepared via tape casting and compared after sintering at various conditions to reference pellets with equivalent compositions and prepared under similar conditions. The aim was to correlate the phase and microstructure features of the BZCY electrolyte layer to the presence of a supporting NiO rich layer and thus providing optimal parameters for sintering of such bi-layers with homogeneous phase composition, i.e. minimization of the secondary phase shares, and finally, proving the hypothesis that the BZCY:NiO anode composite is potentially much stronger sink for BaO than the gas phase.
Keyword(s): Energy (1st) ; Materials Science (2nd)
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