Electrochemical performance and stability of nano-particulate and bi-continuous La1-XSrXCoO3 and Ce0.9Gd0.1O1.95 composite electrodes

Per Hjalmarsson, Jonathan Hallinder, Mogens Bjerg Mogensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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
Volume16
Issue number8
Pages (from-to)2759-2766
ISSN1432-8488
DOIs
Publication statusPublished - 2012

Keywords

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

Fingerprint

Dive into the research topics of 'Electrochemical performance and stability of nano-particulate and bi-continuous La<sub>1-X</sub>Sr<sub>X</sub>CoO<sub>3</sub> and Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> composite electrodes'. Together they form a unique fingerprint.

Cite this