Prediction of infiltrated solid oxide fuel cell cathode polarization resistance

Megna Shah*, Jason D. Nicholas, Scott A. Barnett

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

The polarization resistance of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF)-infiltrated Ce0.9Gd0.1O1.95 cathodes was quantitatively explained using a simple model where the resistance scaled directly with the LSCF surface area, as estimated from cross-sectional fracture surfaces. The Tanner, Fung, Virkar composite cathode model was also applied and showed that ionic transport in these 25-μm-thick cathodes was not a significant limitation at 600 °C, but became more limiting at 700 °C. Calculated polarization resistances were within ∼40% (without fitting parameters) of reported values.

Original languageEnglish (US)
Pages (from-to)2-5
Number of pages4
JournalElectrochemistry Communications
Volume11
Issue number1
DOIs
StatePublished - Jan 2009

Keywords

  • Cathode
  • Infiltration
  • Model
  • Polarization resistance
  • SOFC

ASJC Scopus subject areas

  • Electrochemistry

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