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A bi-continuous porous cathode consisting of nano-particles of strontium substituted lanthanum cobaltite (LSC) covering the surface of a Ce0.9Gd0.1O1.95 (CGO10) backbone has been produced. The polarization resistance (R (P)) of this cathode was measured to similar to 35 m Omega cm(2) at 650 A degrees C. The area-specific resistance at 650 A degrees C (ASR) when applied onto an anode supported cell (ASC) was found to increase from 540 to 730 m Omega cm(2) when subjected to a thermal cycle to 850 A degrees C. This effect was attributed to particles coarsening but also to a reaction with the electrolyte. The results imply that a CGO10 barrier is required for this type of nano-structured cathode.
Original languageEnglish
JournalJournal of Solid State Electrochemistry
Publication date2012
Volume16
Journal number8
Pages2759-2766
ISSN1432-8488
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2

Keywords

  • ELECTROCHEMISTRY, OXIDE FUEL-CELLS, GD-DOPED CERIA, IMPEDANCE SPECTROSCOPY, OXYGEN REDUCTION, LA1-XSRXMN1-YCOYO3+/-DELTA PEROVSKITES, SURFACE EXCHANGE, THIN-FILM, CATHODES, INFILTRATION, DIFFUSION
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