Air plasma spray processing and electrochemical characterization of SOFC composit cathodes

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2007.11.061
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of Power Sources
Volume178
Issue1
Pages334343; # of pages: 10
AbstractAir plasma spraying has been used to produce porous composite cathodes containing (La0.8Sr0.2)0.98MnO3−y (LSM) and yttria-stabilized zirconia (YSZ) for use in solid oxide fuel cells (SOFCs). Preliminary investigations focused on determining the range of plasma conditions under which each of the individual materials could be successfully deposited. A range of conditions was thereby determined that was suitable for the deposition of a composite cathode from pre-mixed LSM and YSZ powders. A number of composite cathodes were produced using different combinations of parameter values within the identified range according to a Uniform Design experimental grid. Coatings were then characterized for composition and microstructure using EDX and SEM. As a result of these tests, combinations of input parameter values were identified that are best suited to the production of coatings with microstructures appropriate for use in SOFC composite cathodes. A selection of coatings representative of the types of observed microstructures were then subjected to electrochemical testing to evaluate the performance of these cathodes. From these tests, it was found that, in general, the coatings that appeared to have the most suitable microstructures also had the highest electrochemical performances, provided that the deposition efficiency of both phases was sufficiently high.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Fuel Cell Innovation
Peer reviewedYes
NPARC number9722881
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Record identifier985130ef-7fff-4fe2-b53b-fc4125be4ae1
Record created2009-07-17
Record modified2016-05-09
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