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Synthesis, structure and protonic conduction of BaSn0.875M0.125O3-d (M [ Sc, Y, In and Gd)

Abstract : The acceptor-substituted BaSn0.875M0.125O3-d (M ¼ Sc, In, Y, and Gd) proton conductors were prepared by a wet chemical method. The effects of dopant nature on the structure, hydration energy and proton conduction have been investigated. Analysis of XRD data showed that all compounds present a cubic perovskite structure (space group: Pm3 m). Thermogravimetry analysis showed that the significant mass of water was gained in wet Ar during measurements, and the most negative hydration energy is observed for Sc-substituted BaSnO3 ( 86 kJ/mol). However, Y-substituted BaSnO3 exhibits the highest proton conductivity at low temperature under wet Ar, such as the total conductivity is 4.8 10 4 S/cm at 600 C.
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https://hal.archives-ouvertes.fr/hal-00594186
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Submitted on : Thursday, May 19, 2011 - 10:31:23 AM
Last modification on : Wednesday, November 17, 2021 - 12:28:18 PM

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Yanzhong Wang, Anthony Chesnaud, Emile Bévillon, Jinlong Yang, Guilhem Dezanneau. Synthesis, structure and protonic conduction of BaSn0.875M0.125O3-d (M [ Sc, Y, In and Gd). International Journal of Hydrogen Energy, Elsevier, 2011, 36, pp.7688-7695. ⟨10.1016/j.ijhydene.2011.03.105⟩. ⟨hal-00594186⟩

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