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dc.creatorElezović, Nevenka R.
dc.creatorLović, Jelena
dc.creatorJović, Borka M.
dc.creatorZabinski, Piotr
dc.creatorWloch, Grzegorz
dc.creatorJović, Vladimir D.
dc.date.accessioned2019-04-17T16:08:07Z
dc.date.available2019-04-17T16:08:07Z
dc.date.issued2019
dc.identifier.issn0013-4686
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/2653
dc.description.abstractThe Ag, Pd and AgPd alloys of different morphologies and compositions were electrodeposited onto Au and glassy carbon (GC) disc electrodes from the solution containing 0.001 M PdCl2 þ 0.04 M AgCl þ 0.1 M HCl þ 12 M LiCl under the conditions of non-stationary (RPM ¼ 0, samples AgPd1 and AgPd2) and convective diffusion (RPM ¼ 1000, sample AgPd3). Electrodeposited alloy layers were characterized by the scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). Oxygen reduction reaction (ORR) was investigated on all coatings in 0.1 M NaOH solution saturated with oxygen. The j-E curves for the ORR were recorded by two proced- ures: (1) samples were cycled with 5 mV s 1 from open circuit potential (OCP) to 0.8 V for Ag and AgPd alloys (or 0.6 V for pure Pd) and back; (2) samples were cycled with 5 mV s 1 from open circuit po- tential to 0.45 V (formation of Ag2O, in the case of Pd formation of PdO and PdO2), from 0.45 V to 0.60 V and back to the OCP. Significant catalytic activity for the Ag and AgPd alloys was detected after cycling electrodes in the potential region of Ag2O formation and reduction. Increase of the catalytic activity for AgPd alloys was, for the first time in the literature, ascribed to the presence of a certain amount of Ag2O which could not be completely reduced during the reverse sweep from 0.45 V to 0.6 V. Catalytic activity of AgPd alloys was found to be closely related to the amount of non-reduced Ag2O (most probably in the form of Ag-hydroxide). In the absence of such treatment, the catalytic activity for the ORR on electro- deposited Ag and AgPd alloy coatings was not detected.sr
dc.language.isoensr
dc.publisherElsevier Ltd.sr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172054/RS//sr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172060/RS//sr
dc.relationCOST Action - COST-STSM-MP1407-35830sr
dc.rightsrestrictedAccesssr
dc.sourceElectrochimica Actasr
dc.subjectAgPd alloysr
dc.subjectElectrodepositionsr
dc.subjectSEM-EDSsr
dc.subjectXPSsr
dc.subjectOxygen reductionsr
dc.titleSynthesis and characterization of AgPd alloy coatings as beneficial catalysts for low temperature fuel cells applicationsr
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractWлоцх, Грзегорз; Забински, П.; Ловић, Јелена; Елезовић, Невенка Р.; Јовић, Борка М.; Јовић, Владимир Д.;
dc.rights.holderElseviersr
dc.citation.volume307
dc.citation.spage360
dc.citation.epage368
dc.citation.rankM21~
dc.identifier.doi10.1016/j.electacta.2019.03.177
dc.identifier.scopus2-s2.0-85064213315
dc.identifier.wos000464956000039
dc.type.versionpublishedVersionsr


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