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Razlike u elektrohemijskom ponašanju oksida rutenijuma i iridijuma u elektrokatalitičkim prevlakama aktiviranih titanskih anoda dobijenih sol-gel postupkom

dc.creatorPanić, Vladimir
dc.creatorDekanski, Aleksandar
dc.creatorMišković-Stanković, Vesna
dc.creatorMilonjić, Slobodan K.
dc.creatorNikolić, Branislav Ž.
dc.date.accessioned2021-03-10T11:16:15Z
dc.date.available2021-03-10T11:16:15Z
dc.date.issued2010
dc.identifier.issn0352-5139
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/1597
dc.description.abstractThe electrochemical characteristics of Ti0.6Ir0.4O2/Ti and Ti0.6Ru0.4O2/Ti anodes prepared by the sol-gel procedure from the corresponding oxide sols, obtained by force hydrolysis of the corresponding metal chlorides, were compared. The voltammetric properties in H2SO4 solution indicate that Ti0.6Ir0.4O2/Ti has more pronounced pseudocapacitive characteristics, caused by proton-assisted, solid state surface redox transitions of the oxide. At potentials negative to 0.0 VSCE, this electrode is of poor conductivity and activity, while the voltammetric behavior of the Ti0.6Ru0.4O2/Ti electrode is governed by proton injection/ejection into the oxide structure. The Ti0.6Ir0.4O2/Ti electrode had a higher electrocatalytical activity for oxygen evolution, while the investigated anodes were of similar activity for chlorine evolution. The potential dependence of the impedance characteristics showed that the Ti0.6Ru0.4O2/ /Ti electrode behaved like a capacitor over a wider potential range than the Ti0.6Ir0.4O2/Ti electrode, with fully-developed pseudocapacitive properties at potentials positive to 0.60 VSCE. However, the impedance characteristics of the Ti0.6Ir0.4O2/Ti electrode changed with increasing potential from resistor-like to capacitor-like behavior.en
dc.description.abstractU radu su ispitivane elektrohemijske karakteristike Ti0,6Ir0,4O2/Ti i Ti0,6Ru0,4O2/Ti anoda dobijenih sol-gel postupkom iz oksidnih solova sintetisanih forsiranom hidrolizom odgovarajućih hlorida metala. Voltametrijske karakteristike u rastvoru H2SO4 ukazuju na više izraženo pseudokapacitivno ponašanje Ti0,6Ir0,4O2/Ti elektrode koje je posledica površinskih redoks prelaza u čvrstom stanju uz učešće protona. Na potencijalima negativnijim od 0,0 VZKE ova elektroda pokazuje slabu provodnost i aktivnost, dok voltametrijskim ponašanjem Ti0,6Ru0,4O2/Ti elektrode dominira prodor protona u strukturu oksida. Ti0,6Ir0,4O2/Ti anoda je elektrokatalitički aktivnija za reakciju izdvajanja kiseonika, dok su anode sličnih aktivnosti za reakciju izdvajanja hlora. Impedansne karakteristike formiranih anoda pokazuju da se Ti0,6Ru0,4O2/Ti elektroda ponaša slično kondenzatoru u širem opsegu potencijala nego što je to slučaj sa Ti0,6Ir0,4O2/Ti elektrodom, sa potpuno razvijenim pseudokapacitivnim svojstvima na potencijalima pozitivnijim od 0,60 VZKE. S druge strane, za Ti0,6Ir0,4O2/Ti elektrodu se uočava prelaz sa karakteristika sličnih otporniku na karakteristike slične kondenzatoru sa porastom potencijala elektrode.sr
dc.publisherSerbian Chemical Society, Belgrade
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142048/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142060/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceJournal of the Serbian Chemical Society
dc.subjectactivated titanium anodesen
dc.subjectsol-gel procedureen
dc.subjectruthenium and iridium oxideen
dc.subjectelectrochemical impedance spectroscopyen
dc.subjectpseudocapacitanceen
dc.titleDifferences in the electrochemical behavior of ruthenium and iridium oxide in electrocatalytic coatings of activated titanium anodes prepared by the sol-gel procedureen
dc.titleRazlike u elektrohemijskom ponašanju oksida rutenijuma i iridijuma u elektrokatalitičkim prevlakama aktiviranih titanskih anoda dobijenih sol-gel postupkomsr
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage1420
dc.citation.issue10
dc.citation.other75(10): 1413-1420
dc.citation.rankM23
dc.citation.spage1413
dc.citation.volume75
dc.identifier.rcubconv_678
dc.identifier.scopus2-s2.0-78449281544
dc.identifier.wos000283895200010
dc.type.versionpublishedVersion


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