performance of cubic-(la,sr)tio3+δ as sofc anodes

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ID: 229332
2007
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Abstract
The performance and potential application of the cubic members of the La4Srn-4TinO3n+2 series of compounds, i.e. n≥12, prepared by solid state reaction are discussed. Although these phases can be indexed as cubic perovskites by X-ray diffraction (XRD), there exists some oxygen beyond the ABO3 stoichiometry accommodated in linear defects reminiscent to the oxygen rich layers in La2Ti2O7. In the present work, we report preliminary fuel cell tests of the n=12,14 and 16 of the La4Srn-4TinO3n+2 series, which reveal moderate responses under hydrogen, but also some promising results implying activation favouring methane oxidation.

En este trabajo se presentan las prestaciones y el potencial uso de las fases cúbicas de la serie homóloga con fórmula La4Srn-4TinO3n+2 (n≥12) preparadas por reacción en el estado sólido. A pesar de que estas fases pueden describirse como perovskitas cúbicas mediante difracción de rayos-X (DRX), existe una cantidad de oxígeno superestequiométrico respecto a la composición ideal de la perovskita ABO3 localizado en defectos lineales análogos a las capas ricas en oxígeno en La2Ti2O7. En el presente trabajo, se muestran ensayos en pilas de combustible realizados en las composiciones n=12,14 and 16 de la serie La4Srn-4TinO3n+2 , donde se muestran respuestas moderadas en hidrógeno, así como una cierta activación que favorece la oxidación del metano.
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Authors ;Marrero-López, D.;Irvine, J. T. S.;Ballesteros, B.;Ruiz-Morales, J. C.;Canales-Vázquez, J.
Journal medicinal chemistry (shariqah (united arab emirates))
Year 2007
DOI
DOI not found
URL
http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/217/232
Keywords
solid oxide fuel cell anodes composites glass Ceramics

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