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dc.creatorBrković, Snežana M.
dc.creatorNikolić, Vladimir M.
dc.creatorMarčeta Kaninski, Milica
dc.creatorPašti, Igor A.
dc.date.accessioned2019-07-01T08:57:09Z
dc.date.available2019-07-01T08:57:09Z
dc.date.issued2019
dc.identifier.issn0360-3199 (print)
dc.identifier.issn1879-3487 (electronic)
dc.identifier.urihttps://linkinghub.elsevier.com/retrieve/pii/S0360319919313576
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/8150
dc.description.abstractHydrogen Oxidation Reaction (HOR) is anode reaction in Proton exchange membrane fuel cells (PEMFCs) and it has very fast kinetics. However, the purity of fuel (H 2 ) is very important and can slow down HOR kinetics, affecting the overall PEMFC performance. The performance of commercial Pt/C catalyst impregnated with WO x, as a catalyst for HOR, was investigated using a set of electrochemical methods (cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry). In order to deepen the understanding how WO x species can contribute CO tolerance of Pt/C, a particular attention was paid to CO poisoning. In the absence of CO, HOR is under diffusion limitations and HOR kinetics is not affected by WO x species. Appreciable HOR current on the electrodes pre-saturated with CO ads at potentials above 0.3 V vs. RHE, which is not observed for pure Pt/C, was discussed in details. HOR liming diffusion currents for higher concentrations of W are reached at high anodic potentials. The obtained results were explained by donation of OH ads by WO x phase for CO ads removal in the mid potential region and reduced reactivity of Pt surface sites in the vicinity of the Pt|WO x interface. The obtained results can provide guidelines for development of novel CO tolerant PEMFC anode catalysts. © 2019 Hydrogen Energy Publications LLCen
dc.language.isoen
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172045/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45014/RS//
dc.rightsrestrictedAccess
dc.sourceInternational Journal of Hydrogen Energy
dc.subjectPt/C catalystsen
dc.subjectTungsten oxideen
dc.subjectCO toleranceen
dc.subjectHydrogen oxidation reactionen
dc.subjectPEMFCen
dc.titlePt/C catalyst impregnated with tungsten-oxide – Hydrogen oxidation reaction vs. CO toleranceen
dc.typearticleen
dc.rights.licenseARR
dcterms.abstractПашти, Игор A.; Марчета Канински, Милица; Брковић, Снежана М.; Николић, Владимир М.;
dc.citation.volume44
dc.citation.issue26
dc.citation.spage13364
dc.citation.epage13372
dc.identifier.wos000470051300043
dc.identifier.doi10.1016/j.ijhydene.2019.03.270
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-85064432544


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