Electrochemical Chararterization of Air Plasma Sprayed LSM/YSZ Composite Cathodes on Metallic Interconnects

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DOIResolve DOI: http://doi.org/10.1149/1.2729208
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TypeArticle
Journal titleECS Transactions
Volume7
Issue1
Pages11071114; # of pages: 7
AbstractPorous composite cathodes composed of (La0.8Sr0.2)0.98MnO3-y(LSM) and yttria stabilized zirconia (YSZ) have been produced byaxial air plasma spraying on porous metal interconnectsubstrates and characterized by scanning electron microscopy(SEM). Cathodes with different microstructures were produced byvarying the input parameters of the APS process to determine theeffect of this variation on cathode microstructure andperformance. Symmetrical double-cathode cells with YSZelectrolytes produced by plasma spraying were also fabricatedfor comparison of electrochemical performance at temperaturesranging from 650{degree sign}C to 900{degree sign}C, usingelectrochemical impedancespectroscopy (EIS) to correlate the microstructural quality withthe cathode polarization resistance. Values of the APS processparameters most suitable for the deposition of LSM/YSZ compositecathodes were identified, and post-testing analysis of thesymmetrical cells was carried out to examine the degradation ofthe metal substrate and cathodes.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Fuel Cell Innovation
Peer reviewedYes
NPARC number8901075
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Record identifierd11c463a-1648-4053-affd-9cb217cfc22f
Record created2009-04-22
Record modified2016-05-09
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