Effects of open-circuit operation on membrane and catalyst layer degradation in proton exchange membrane fuel cells

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2009.08.070
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TypeArticle
Journal titleJournal of Power Sources
Volume195
Pages11421148; # of pages: 6
SubjectPEM fuel cell; Membrane; Catalyst layer; Degradation; Open-circuit operation; Open circuit voltage
AbstractDurability issues have been attracting a great deal of attention in hydrogen/air proton exchange membrane (PEM) fuel cell research. In the present work, membrane electrode assembly (MEA) degradation under open circuit (OC) conditions was carried out for more than 250 h. By means of several on-line electrochemical measurements, the performance of the fuel cell was analysed at different times during the degradation process. The results indicate that structural changes in the PEM and catalyst layers (CLs) are the main reasons for the decline in performance during OC operation. The results also show that degradation due to platinum oxidation or catalyst contamination can be partially recovered by a subsequent potential cycling process, whereas the same cycling process cannot recover the membrane degradation.
Publication date
LanguageEnglish
AffiliationNRC Institute for Fuel Cell Innovation; National Research Council Canada
Peer reviewedYes
NPARC number17101722
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Record identifierc58a5475-8e79-4594-b709-cfdcfc54d94f
Record created2011-03-09
Record modified2016-05-09
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