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dc.contributor.authorStrahl, Stephan
dc.contributor.authorGasamans Rodríguez, Noemí
dc.contributor.authorLlorca Piqué, Jordi
dc.contributor.authorHusar, Attila Peter
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut de Tècniques Energètiques
dc.date.accessioned2014-07-17T12:52:34Z
dc.date.available2014-07-17T12:52:34Z
dc.date.created2014
dc.date.issued2014
dc.identifier.citationStrahl, S. [et al.]. Experimental analysis of a degraded open-cathode PEM fuel cell stack. "International journal of hydrogen energy", 2014, vol. 39, núm. 10, p. 5378-5387.
dc.identifier.issn0360-3199
dc.identifier.urihttp://hdl.handle.net/2117/23542
dc.description.abstractThe well-known challenges to overcome in PEM fuel cell research are their relatively low durability and the high costs for the platinum catalysts. This work focuses on degradation mechanisms that are present in open-cathode PEM fuel cell systems and their links to the decaying fuel cell performance. Therefore a degraded, open-cathode, 20 cell, PEM fuel cell stack was analyzed by means of in-situ and ex-situ techniques. Voltage transients during external perturbations, such as changing temperature, humidity and stoichiometry show that degradation affects individual cells quite differently towards the end of life of the stack. Cells located close to the endplates of the stack show the biggest performance decay. Electrochemical impedance spectroscopy (EIS) data present non-reversible catalyst layer degradation but negligible membrane degradation of several cells. Post-mortem, ex-situ experiments, such as cyclic voltammetry (CV), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) show a significant active area loss of the first cells within the stack due to Pt dissolution, oxidation and agglomeration. Scanning electron microscope (SEM) images of the degraded cells in comparison with the normally working cells in the stack show severe carbon corrosion of the cathode catalyst layers.
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Informàtica::Automàtica i control
dc.subjectÀrees temàtiques de la UPC::Energies
dc.subject.lcshPEM fuel cells
dc.subject.otherpower system control
dc.subject.otherPEMFC
dc.subject.otheropen-cathode
dc.subject.otherdegradation
dc.subject.otherin-situ and ex-situ experiments
dc.titleExperimental analysis of a degraded open-cathode PEM fuel cell stack
dc.typeArticle
dc.subject.lemacEnergia -- Gestió
dc.subject.lemacPiles de combustible -- Control electrònic
dc.contributor.groupUniversitat Politècnica de Catalunya. ACES - Control Avançat de Sistemes d'Energia
dc.contributor.groupUniversitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
dc.identifier.doi10.1016/j.ijhydene.2013.12.115
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ijhydene.2013.12.115
dc.rights.accessOpen Access
local.identifier.drac13712064
dc.description.versionPreprint
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/303419/EU/Physical bottom Up Multiscale Modelling for Automotive PEMFC Innovative performance and Durability optimization/PUMA MIND
local.citation.authorStrahl, S.; Gasamans, N.; Llorca, J.; Husar, A.
local.citation.publicationNameInternational journal of hydrogen energy
local.citation.volume39
local.citation.number10
local.citation.startingPage5378
local.citation.endingPage5387


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