Non-destructuve delamination detection in solid oxide fuel cells

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2007.02.042
AuthorSearch for: ; Search for:
TypeArticle
Journal titleJournal of Power Sources
Volume167
Issue2
Pages430441; # of pages: 12
SubjectSolid oxide fuel cell; Delamination; Impedance spectroscopy; Modeling; Degradation; Diagnostics
AbstractA finite element model has been developed to simulate the steady state and impedance behaviour of a single operating solid oxide fuel cell (SOFC). The model results suggest that electrode delamination can be detected minimally-invasively by using electrochemical impedance spectroscopy. The presence of cathode delamination causes changes in the cell impedance spectrum that are characteristic of this type of degradation mechanism. These changes include the simultaneous increase in both the series and polarization resistances, in proportion to the delaminated area. Parametric studies show the dependence of these changes on the extent of delamination, on the operating point, and on the kinetic characteristics of the fuel cell under study.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Fuel Cell Innovation
Peer reviewedNo
NPARC number8901052
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Record identifier85b00dce-d235-4942-9b57-84055f0567ba
Record created2009-04-22
Record modified2016-05-09
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