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Title: Study of Ln{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} (Ln=La, Gd, Sm or Nd) as the cathode materials for intermediate temperature SOFC

Abstract

Perovskite type oxides Ln{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} (Ln=La, Gd, Sm, or Nd) have been prepared by the solid state reaction of corresponding oxides. The crystal parameters of the compositions were determined by XRD powder diffraction, which revealed that all the compositions have orthorhombic structure. The reaction test of all samples with Ce{sub 0.8}Gd{sub 0.2}O{sub 1.9} was carried out at 1200 deg. C for 48 h, and no reaction product was detected by XRD. The change in mass of La{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} as a function of temperature was determined by thermogravimetric analysis (TGA). The electrical conductivity of the sintered samples were measured as a function of temperature from 200 to 1000 deg. C. The highest conductivity of about 1400 S cm{sup -1} was found in La{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}}. The cathodic polarization of these oxides electrodes deposited on Ce{sub 0.8}Gd{sub 0.2}O{sub 1.9} tablet was studied at 500-800 deg. C in air.

Authors:
; ; ;
Publication Date:
OSTI Identifier:
20887987
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 38; Journal Issue: 8; Other Information: DOI: 10.1016/S0025-5408(03)00143-0; PII: S0025540803001430; Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CATHODES; ELECTRIC CONDUCTIVITY; LATTICE PARAMETERS; ORTHORHOMBIC LATTICES; OXIDES; PEROVSKITE; POLARIZATION; POWDERS; SOLID OXIDE FUEL CELLS; TEMPERATURE DEPENDENCE; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION

Citation Formats

Wenxia, Chen, Tinglian, Wen, Huaiwen, Nie, and Rui, Zheng. Study of Ln{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} (Ln=La, Gd, Sm or Nd) as the cathode materials for intermediate temperature SOFC. United States: N. p., 2003. Web. doi:10.1016/S0025-5408(03)00143-0.
Wenxia, Chen, Tinglian, Wen, Huaiwen, Nie, & Rui, Zheng. Study of Ln{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} (Ln=La, Gd, Sm or Nd) as the cathode materials for intermediate temperature SOFC. United States. https://doi.org/10.1016/S0025-5408(03)00143-0
Wenxia, Chen, Tinglian, Wen, Huaiwen, Nie, and Rui, Zheng. Mon . "Study of Ln{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} (Ln=La, Gd, Sm or Nd) as the cathode materials for intermediate temperature SOFC". United States. https://doi.org/10.1016/S0025-5408(03)00143-0.
@article{osti_20887987,
title = {Study of Ln{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} (Ln=La, Gd, Sm or Nd) as the cathode materials for intermediate temperature SOFC},
author = {Wenxia, Chen and Tinglian, Wen and Huaiwen, Nie and Rui, Zheng},
abstractNote = {Perovskite type oxides Ln{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} (Ln=La, Gd, Sm, or Nd) have been prepared by the solid state reaction of corresponding oxides. The crystal parameters of the compositions were determined by XRD powder diffraction, which revealed that all the compositions have orthorhombic structure. The reaction test of all samples with Ce{sub 0.8}Gd{sub 0.2}O{sub 1.9} was carried out at 1200 deg. C for 48 h, and no reaction product was detected by XRD. The change in mass of La{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}} as a function of temperature was determined by thermogravimetric analysis (TGA). The electrical conductivity of the sintered samples were measured as a function of temperature from 200 to 1000 deg. C. The highest conductivity of about 1400 S cm{sup -1} was found in La{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Mn{sub 0.2}O{sub 3-{delta}}. The cathodic polarization of these oxides electrodes deposited on Ce{sub 0.8}Gd{sub 0.2}O{sub 1.9} tablet was studied at 500-800 deg. C in air.},
doi = {10.1016/S0025-5408(03)00143-0},
url = {https://www.osti.gov/biblio/20887987}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 8,
volume = 38,
place = {United States},
year = {2003},
month = {7}
}