Ceria‐doped scandia‐stabilized zirconia (10Sc 2 O 3 ·1CeO 2 ·89ZrO 2 ) as electrolyte for SOFC s: Sintering and ionic conductivity of thin, flat sheets

In this study, thin, flat sheets, about 90 μm thick, were prepared from ceria‐doped scandia‐stabilized zirconia with molecular formula 10Sc 2 O 3 ·1CeO 2 ·89 ZrO 2 (10Sc1Ce SZ ) by tape casting and subsequent sintering at different thermal cycles. A sintering thermal cycle was selected that yielded...

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Bibliographic Details
Published in:International journal of applied ceramic technology 2017-07, Vol.14 (4), p.532-542
Main Authors: Escardino, Agustín, Belda, Adriana, Orts, Maria‐Jose, Gozalbo, Ana
Format: Article
Language:English
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Summary:In this study, thin, flat sheets, about 90 μm thick, were prepared from ceria‐doped scandia‐stabilized zirconia with molecular formula 10Sc 2 O 3 ·1CeO 2 ·89 ZrO 2 (10Sc1Ce SZ ) by tape casting and subsequent sintering at different thermal cycles. A sintering thermal cycle was selected that yielded defect‐free flat sheets, with practically negligible porosity (between 0.35% and 0.10%) and average grain diameters ranging from 1.32 to 6.30 μm. Ionic conductivity at 600°C was as high as 21  mS /cm. Ionic conductivity increased with average grain diameters up to 2.7 μm. At higher average grain diameters, conductivity remained practically constant.
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.12675