Electrode performance of nanostructured La1-aSr aCo1-bFebO3-x on a Ce 0.8Sm0.2O2 electrolyte prepared by citrate nitrate auto-combustion

Francesca Deganello*, Vincenzo Esposito, Enrico Traversa, Masaru Miyayama

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Nanostructured La1-aSraCo1-bFe bO3-x (a=0.3-0.5; b=0-0.2) and Ce0.8Sm 0.2O2 powders were successfully prepared by citrate-nitrate auto-combustion 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-bFe bO3-x as a cathode material for Single Chamber Solid Oxide Fuel Cells. 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°C to 1250°C and the best sintering temperature was found to be 900°C. The best characteristics as cathode around the operating temperature of Single Chamber Fuel Cells were found for the composition with a=0.4 and the minimum iron doping; at 700°C, an Area Specific Resistance of 0.13 Ω-cm2 was measured. copyright The Electrochemical Society.

Original languageEnglish (US)
Title of host publicationSolid State Ionic Devices IV
Pages219-232
Number of pages14
Volume1
Edition7
DOIs
StatePublished - 2005
Externally publishedYes
Event4th International Symposium on Solid-State Ionic Devices - 208th Meeting of the Electrochemical Society - Los Angeles, CA, United States
Duration: Oct 16 2005Oct 21 2005

Other

Other4th International Symposium on Solid-State Ionic Devices - 208th Meeting of the Electrochemical Society
CountryUnited States
CityLos Angeles, CA
Period10/16/0510/21/05

ASJC Scopus subject areas

  • Engineering(all)

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