2026-06-28T10:38:48Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/943372024-12-06T00:51:27Zcom_20.500.14352_14col_20.500.14352_15

Influence of the synthesis conditions on the crystal structure and properties of GdBaCo2 xFexO5+d oxides as air-electrodes for intermediate temperature solid oxide fuel cells Muñoz Gil, Daniel Pérez-Coll, Domingo Urones Garrote, Esteban Amador, Ulises García Martín, Susana The influence of the synthesis conditions on the crystal structure and properties of the oxides of the system GdBaCo2-xFexO5+d is reported in this article. The materials are prepared by a ceramic method either in air or in an argon atmosphere. Crystal structure characterization is carried out by a combination of powder X-ray diffraction (PXRD) with advanced methods of high resolution transmission electron microscopy (HRTEM), scanning-transmission electron microscopy (STEM) and electron energy-loss spectroscopy (EELS). Thermal expansion coefficients of the oxides decrease with increasing substitution of Co by Fe. Impedance spectroscopy analysis of symmetrical cells using these materials as electrodes reveals areaspecific polarization resistance (ASR) values low enough for the use of the oxides as air electrodes in intermediate temperature solid oxide fuel cells (IT-SOFCs). 2024-01-22T11:55:00Z 2024-01-22T11:55:00Z 2017 journal article Muñoz-Gil, Daniel, et al. «Influence of the Synthesis Conditions on the Crystal Structure and Properties of GdBaCo 2−x Fe x O 5+δ Oxides as Air-Electrodes for Intermediate Temperature Solid Oxide Fuel Cells». Journal of Materials Chemistry A, vol. 5, n.o 24, 2017, pp. 12550-56. https://doi.org/10.1039/C7TA02671D. 2050-7488 10.1039/c7ta02671d https://hdl.handle.net/20.500.14352/94337 https://doi.org/10.1039/c7ta02671d eng VoR MAT2013-46452-C4-4-R, MAT2016-78362-C4-4-R, MAT2016- 78362-C4-1-R and ENE2015-66183-R MATERYENER3CM-S2013/MIT-2753 restricted access Royal Society of Chemistry