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Synthesis, microstructural properties and chemical stability of 3DOM structures of Sr1−xYxTiO3

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Abstract

Yttrium-doped strontium titanate is a perovskite with a great potential to act as an anode material for solid oxide fuel cells. Two different synthesis procedures have been used to modify and optimize perovskite morphology. First way involved usage of surfactant TX-100 and led to obtainment of irregular structure with pore diameter of 150–200 nm, whereas in the second one, spheres of poly (methyl methacrylate) acted as soft templates and led to attainment of highly regular hollow perovskite network with pore diameter of around 110 nm. The discussion concerning the influence of yttrium on thermal properties of material, thermal expansion coefficients and chemical stability (in water–carbon dioxide rich atmosphere) were presented. It was found that introduction of yttrium into the strontium titanate leads to the decrease of SrTiO3 shrinkage temperature. Moreover, coupling TG measurements with mass spectrometry allowed to determinate behavior of pure and yttrium-doped strontium titanate in H2O and CO2 containing atmosphere. It was observed that addition of yttrium into SrTiO3 has no influence on materials stability.

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Acknowledgements

This work was financially supported by the National Science Center of the Republic of Poland, Grant No. 2014/14/EST5/00763.

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Authors and Affiliations

  1. AGH University of Science and Technology, Faculty of Materials Science and Ceramics, al. A. Mickiewicza 30, 30-059, Kraków, Poland

    Ewa Drożdż, Łukasz Łańcucki & Agnieszka Łącz

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  1. Ewa Drożdż
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  2. Łukasz Łańcucki
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  3. Agnieszka Łącz
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Correspondence to Ewa Drożdż.

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Drożdż, E., Łańcucki, Ł. & Łącz, A. Synthesis, microstructural properties and chemical stability of 3DOM structures of Sr1−xYxTiO3 . J Therm Anal Calorim 125, 1225–1231 (2016). https://doi.org/10.1007/s10973-016-5463-1

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  • DOI: https://doi.org/10.1007/s10973-016-5463-1

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