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Characterization of Sc2O3&CeO2-Stabilized ZrO2 Powders Via Co-Precipitation or Hydrothermal Synthesis

Published online by Cambridge University Press:  06 August 2013

Justyna Grzonka ,
Victor Vereshchak ,
Oleksiy Shevchenko ,
Oleksandr Vasylyev  and
Krzysztof J. Kurzydłowski
Justyna Grzonka*
Affiliation:
Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland
Victor Vereshchak
Affiliation:
Laboratory for Chemistry & Technology of Powder Materials, Ukrainian State University of Chemical Engineering, Dnipropetrovs'k, 49005, Ukraine
Oleksiy Shevchenko
Affiliation:
Frantcevych Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine
Oleksandr Vasylyev
Affiliation:
Frantcevych Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv 03680, Ukraine
Krzysztof J. Kurzydłowski
Affiliation:
Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland
*
*Corresponding author. E-mail: j.grzonka@inmat.pw.edu.pl
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Abstract

As the presence of Sc2O3 and CeO2 is known to largely enhance the ionic conductivity in the temperature range of 600–800°C, compared with the conventional yttria-stabilized ZrO2, Sc2O3&CeO2-stabilized ZrO2 provide its applicability as electrolytes in solid oxide fuel cells. The current study introduces the methodology to synthesize Sc2O3&CeO2-stabilized ZrO2 powders by using co-precipitation technique or high-temperature hydrothermal reaction, and further describes the structural characterization of the zirconia powders synthesized by the above-mentioned two methods. The co-precipitation technique was found to allow obtaining powders of cubic phase, whereas high-temperature hydrothermal synthesis results in the presence of a monoclinic phase as well. The scanning transmission electron microscope observations also confirm that the size of the synthesized ZrO2 powders in this study is found to be much smaller than that of commercially available powders.

Keywords

Scandia ceria co-stabilized zirconia powdersnanocrystalline materialsgrain sizesolid oxide fuel cellsscanning transmission electron microscopy
Type
Research Article
Information
Microscopy and Microanalysis , Volume 19 , Supplement S5: IUMAS , August 2013 , pp. 29 - 32
Copyright
Copyright © Microscopy Society of America 2013 

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