Electrochemical methods for post-mortem failure analysis of commercial PEM fuel cell stacks

dc.creatorMASCHA AFRA SMIT
dc.creatorH. Basak Y?ld?r?m
dc.creatorMartijn Mulder
dc.creatorFrank A. de Bruijn
dc.date2013
dc.date.accessioned2023-07-21T19:18:47Z
dc.date.available2023-07-21T19:18:47Z
dc.identifierhttp://cicy.repositorioinstitucional.mx/jspui/handle/1003/1608
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7737168
dc.descriptionA combination of electrochemical methods was used to determine failure modes of commercial stacks, run under unknown customer-dependent operational conditions. In this specific case, post-mortem analysis was applied to a commercial 4 kW PEM fuel cell stack. Selected MEAs from this stack were characterized in a test stack by polarization curves, AC impedance spectroscopy and anode and cathode cyclic voltammetry, in order to determine general performance for each cell, ohmic resistance and catalyst layer characteristics. Specific sections from selected MEAs were characterized by the same techniques, in order to determine flowfield dependent variations. It was found that MEAs from the failed stack had increased ohmic resistance together with a strongly reduced anode catalyst surface area, indicating that very fast hydrogen starvation had occurred, causing degradation of the anode catalyst layer. Damage occurred homogeneously over the MEA surface, indicating damage was not related to the flowfield. No degradation was observed at the cathode or the membrane. The combination of electrochemical methods forms a powerful tool to provide detailed insight into cell parameters and degradation for used commercial stacks
dc.formatapplication/pdf
dc.languageeng
dc.relationcitation:Smit, M. A., Yildirim, H., Mulder, M. J. J., & de Bruijn, F. A. (2013). Electrochemical methods for post-mortem failure analysis of commercial PEM fuel cell stacks. Int. J. Electrochem. Sci, 8, 12116-12131.
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.sourceInt. J. Electrochem. Sci, 8, 12116-12131, 2013.
dc.subjectinfo:eu-repo/classification/Autores/HYDROGEN
dc.subjectinfo:eu-repo/classification/Autores/PEM FUEL CELL STACK
dc.subjectinfo:eu-repo/classification/Autores/COMMERCIAL STACK
dc.subjectinfo:eu-repo/classification/Autores/MEA DEGRADATION
dc.subjectinfo:eu-repo/classification/Autores/FAILURE ANALYSIS
dc.subjectinfo:eu-repo/classification/cti/7
dc.subjectinfo:eu-repo/classification/cti/33
dc.subjectinfo:eu-repo/classification/cti/3322
dc.subjectinfo:eu-repo/classification/cti/531205
dc.subjectinfo:eu-repo/classification/cti/531205
dc.titleElectrochemical methods for post-mortem failure analysis of commercial PEM fuel cell stacks
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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