Measurements and modeling of Sm0.5 Sr0.5 CoO 3-x - Ce0.9 Gd0.1 O1.95 SOFC cathodes produced using infiltrate solution additives

Jason D. Nicholas, Scott A Barnett

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

Nanocomposite Sm0.5 Sr0.5 CoO3-x (SSC)- Ce0.9 Gd0.1 O1.95 (GDC) solid oxide fuel cell (SOFC) cathodes were produced by infiltrating SSC nitrate solutions into GDC scaffolds. A single infiltration of a concentrated solution resulted in a low polarization resistance of 0.1 cm2 at 600°C. Infiltrate solution additives slightly improved the SSC phase purity but did not significantly alter the SSC particle morphology/size or the infiltrated cathode polarization resistance. Polarization resistance predictions made using microstructural observations and a simple model were found to be within 35% of the experimentally measured values without the use of fitting parameters.

Original languageEnglish (US)
JournalJournal of the Electrochemical Society
Volume157
Issue number4
DOIs
StatePublished - Mar 26 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Electrochemistry

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