PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION

This paper describes the preparation of La075Sr0 25Cr02Fe08O3 perovskite oxide, using a polymerization-combustion route, to obtain materials for potential applications like electrodes in solid oxide fuel cells (SOFC). For such purpose, initially the solid precursor was characterized by FT-IR spectro...

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Autores principales:	GÓMEZ-CUASPUD,J. A, VALENCIA-RÍOS,J. S, CARDA-CASTELLÓ,J. B
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2010
Materias:	anodes citrate coordination compounds perovskite
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000400007
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spelling	oai:scielo:S0717-970720100004000072011-05-25PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTIONGÓMEZ-CUASPUD,J. AVALENCIA-RÍOS,J. SCARDA-CASTELLÓ,J. B anodes citrate coordination compounds perovskite This paper describes the preparation of La075Sr0 25Cr02Fe08O3 perovskite oxide, using a polymerization-combustion route, to obtain materials for potential applications like electrodes in solid oxide fuel cells (SOFC). For such purpose, initially the solid precursor was characterized by FT-IR spectroscopy and thermal analysis (TGA-DTA), showing the obtention of polymeric citrate precursors. The thermal analysis (TGA-DTA), X-ray diffraction (XRD) and scanning electronic microscopy (SEM), provides information about the formation of a perovskite phase, while the texture, relief and roughness found are characteristic of the method of synthesis used. The size of crystallites, calculated using the Scherrer calculator software and transmission electron microscopy (TEM), confirmed the presence of nanometric crystallites (< 41.0 nm), whereas the chemical composition and crystallographic structure, indicating a high correlation with respect to proposed system, which was confirmed by X-ray fluorescence (XRF), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Finally the electrical characterization by impedance spectroscopy (IS), determined the capacitance and resistance of the system in order to provide information related to the concentration of charge carriers and the diffusion rate of ions in the material a high conductivity values, related to semiconductor behavior for potential applications.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.55 n.4 20102010-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000400007en10.4067/S0717-97072010000400007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	anodes citrate coordination compounds perovskite
spellingShingle	anodes citrate coordination compounds perovskite GÓMEZ-CUASPUD,J. A VALENCIA-RÍOS,J. S CARDA-CASTELLÓ,J. B PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION
description	This paper describes the preparation of La075Sr0 25Cr02Fe08O3 perovskite oxide, using a polymerization-combustion route, to obtain materials for potential applications like electrodes in solid oxide fuel cells (SOFC). For such purpose, initially the solid precursor was characterized by FT-IR spectroscopy and thermal analysis (TGA-DTA), showing the obtention of polymeric citrate precursors. The thermal analysis (TGA-DTA), X-ray diffraction (XRD) and scanning electronic microscopy (SEM), provides information about the formation of a perovskite phase, while the texture, relief and roughness found are characteristic of the method of synthesis used. The size of crystallites, calculated using the Scherrer calculator software and transmission electron microscopy (TEM), confirmed the presence of nanometric crystallites (< 41.0 nm), whereas the chemical composition and crystallographic structure, indicating a high correlation with respect to proposed system, which was confirmed by X-ray fluorescence (XRF), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Finally the electrical characterization by impedance spectroscopy (IS), determined the capacitance and resistance of the system in order to provide information related to the concentration of charge carriers and the diffusion rate of ions in the material a high conductivity values, related to semiconductor behavior for potential applications.
author	GÓMEZ-CUASPUD,J. A VALENCIA-RÍOS,J. S CARDA-CASTELLÓ,J. B
author_facet	GÓMEZ-CUASPUD,J. A VALENCIA-RÍOS,J. S CARDA-CASTELLÓ,J. B
author_sort	GÓMEZ-CUASPUD,J. A
title	PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION
title_short	PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION
title_full	PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION
title_fullStr	PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION
title_full_unstemmed	PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION
title_sort	preparation and characterization of perovskite oxides by polymerization-combustion
publisher	Sociedad Chilena de Química
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072010000400007
work_keys_str_mv	AT gomezcuaspudja preparationandcharacterizationofperovskiteoxidesbypolymerizationcombustion AT valenciariosjs preparationandcharacterizationofperovskiteoxidesbypolymerizationcombustion AT cardacastellojb preparationandcharacterizationofperovskiteoxidesbypolymerizationcombustion
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PREPARATION AND CHARACTERIZATION OF PEROVSKITE OXIDES BY POLYMERIZATION-COMBUSTION

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