Ex situ study of chloride contamination on carbon supported Pt catalyst

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2012.01.063
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TypeArticle
Journal titleJournal of Power Sources
ISSN03787753
Volume205
Pages235238
SubjectPolymer electrolyte membrane; Fuel cell; Chloride contamination; Electrochemical quartz crystal microbalance
AbstractThe effect of ppm levels of chloride ions on a carbon supported platinum catalyst was examined using an ex situ electrochemical quartz crystal microbalance (EQCM) method. The dissolution of Pt as chloride complexes and the adsorption of chloride ions resulted in a loss of electrochemical surface area (ECSA) by 4%, 7% and 13% for the respective chloride concentrations of 500 ppm, 1000 ppm and 2000 ppm. Catalyst durability was examined by cyclic voltammetry (CV) and scanning electron microscopy (SEM) in the presence of 1000 ppm chloride. The beginning of life (BOL) ECSA of 8.1 cm² cm−² was significantly reduced to an end of life (EOL) ECSA of 3.2 cm² cm−² after cycling in the presence of 1000 ppm chloride.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS0378775312001620
NPARC number21268798
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Record identifier60e9dd8b-ba9f-41ac-aaaf-6faf4338a1c3
Record created2013-11-13
Record modified2016-05-09
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