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Synthesis and characterization of La0.7Sr0.3Fe0.7Co0.3O3±δ by Sonochemistry

Published online by Cambridge University Press:  19 November 2020

De La Huerta-Hernández G. Elena ,
Castro Cisneros Iván ,
Chávez Carvayar José A.  and
Hernández Pérez Isaías
De La Huerta-Hernández G. Elena*
Affiliation:
Departamento de Ciencias Básicas, UAM-A, Av. San Pablo No. 180, Azcapotzalco, Ciudad de México. C.P. 02200. México.
Castro Cisneros Iván
Affiliation:
Facultad de Ingeniería,Universidad Autónoma del Carmen, Av. Central s/n esq. Con Fracc. Mundo Maya, Ciudad del Carmen. C.P. 24115. México
Chávez Carvayar José A.
Affiliation:
Instituto de Investigaciones en Materiales, UNAM, Circuito exterior, C.U., Ciudad de México. C.P. 04510. México.
Hernández Pérez Isaías
Affiliation:
Departamento de Ciencias Básicas, UAM-A, Av. San Pablo No. 180, Azcapotzalco, Ciudad de México. C.P. 02200. México.
*
*Author for correspondence: [email protected]
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Abstract

Among different possible energy sources, in the search for fossil fuel substitutes, hydrogen and fuel cells are presented as one of the most promising alternatives, with great potential, in the development of devices for the generation of clean electrical energy. Recently, lanthanum based compounds have been studied due to their interesting transport properties, which led these products to be applied as possible cathode materials in a solid oxide fuel cell. In this work, a lanthanum based material with a perovskite structure, La0.7Sr0.3Fe0.7Co0.3O3±δ (LSFC), was synthesized, from nitrates, by sonochemistry. This product was structurally characterized by powder X-ray diffraction and morphological studies were obtained by scanning electron microscopy. Results showed a nanostructured material with a crystal size in de order of 14 nm and a cubic perovskite structure with cell parameters of a = 3.8927 Å. Morphological characterization indicated a porous material formed by grains of homogeneous size, pores had an average length of 17 nm and area of 36 nm2, showing a channel shape distribution.

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Articles
Information
MRS Advances , Volume 5 , Issue 61: International Materials Research Congress XXIX , 2020 , pp. 3163 - 3170
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Copyright
Copyright © The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press

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