Synthesis, microstructural properties and chemical stability of 3DOM structures of Sr1−xYxTiO3
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- 作者：Ewa Drożdż ; Łukasz Łańcucki ; Agnieszka Łącz
- 刊名：Journal of Thermal Analysis and Calorimetry
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：125
- 期：3
- 页码：1225-1231
- 全文大小：1,280 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Sciences
Polymer Sciences
Physical Chemistry
Inorganic Chemistry
Measurement Science and Instrumentation - 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
- ISSN：1572-8943
- 卷排序：125
文摘
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.KeywordsPorous materialsSrTiO33DOM structureSOFC