Cathode performance of nanostructured La(1-a) Sr(a) Co (1-b)Fe(b)O(3-x) on a Ce0.8Sm0.2O2 electrolyte prepared by citrate-nitrate auto-combustion (Articolo in rivista)

Type
Label
  • Cathode performance of nanostructured La(1-a) Sr(a) Co (1-b)Fe(b)O(3-x) on a Ce0.8Sm0.2O2 electrolyte prepared by citrate-nitrate auto-combustion (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • F. Deganello; V. Esposito; M. Miyayama; E. Traversa (2007)
    Cathode performance of nanostructured La(1-a) Sr(a) Co (1-b)Fe(b)O(3-x) on a Ce0.8Sm0.2O2 electrolyte prepared by citrate-nitrate auto-combustion
    in Journal of the Electrochemical Society
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Deganello; V. Esposito; M. Miyayama; E. Traversa (literal)
Pagina inizio
  • 154 (literal)
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  • A89 (literal)
Rivista
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  • Institute for the Study of Nanostructured Materials, Italian National Research Council, Palermo, Italy Department of Chemical Science and Technology, University of Rome \"Tor Vergata,\" Rome, Italy Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan (literal)
Titolo
  • Cathode performance of nanostructured La(1-a) Sr(a) Co (1-b)Fe(b)O(3-x) on a Ce0.8Sm0.2O2 electrolyte prepared by citrate-nitrate auto-combustion (literal)
Abstract
  • Nanostructured La1-aSraCo1-bFebO3-x à = 0.3-0.5; b = 0-0.2? and Ce0.8Sm0.2O2 powders were successfully prepared by citratenitrate autocombustion synthesis and were characterized by scanning electron microscopy and X-ray diffraction analysis. Electrochemical impedance spectroscopy measurements on symmetric cells were performed to evaluate the applicability of La1-aSraCo1-bFebO3-x as a cathode material for intermediate temperature solid oxide fuel cells based on Sm doped-ceria electrolytes. Our results demonstrated that strontium has a positive effect while iron shows a slightly negative effect on the interfacial resistance. The effect of the electrode sintering temperature was investigated by varying the temperature from 850 to 1250°C, and the best sintering temperature was found to be 900°C. The best characteristics as cathode at intermediate operating temperatures were found for the composition with a = 0.4 and the minimum iron doping, b = 0.05; at 700°C, an area specific resistance of 0.13 ? cm2 was measured. (literal)
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