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dc.creatorEraković, Sanja
dc.creatorPavlović, Miroslav M.
dc.creatorStopić, Srećko
dc.creatorStevanović, Jasmina
dc.creatorMitrić, Miodrag
dc.creatorFriedrich, Bernd
dc.creatorPanić, Vladimir
dc.date.accessioned2019-11-14T10:17:21Z
dc.date.available2019-11-14T10:17:21Z
dc.date.issued2019
dc.identifier.issn0013-4686
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/3207
dc.description.abstractConsiderable promotion of RuO2 hosted by perovskite-like structure of rare eartheCoO3 composite and vice versa supercapacitive performances is reported. Spherical, sub-mm-sized, regular spheres of La0.6Sr0.4CoO3 (LSCO), were synthesized by ultrasonic spray pyrolysis. The sphere surface was subsequently hydrothermally doped by RuO2. LSCO and LSCO/RuO2 composites were investigated for their supercapacitive performances in alkaline solution. Microstructure and surface morphology were studied by SEM and XRD. It was found that amorphous Ru species decorate LSCO surface, and possibly incorporate partially into B-site of the LSCO lattice. Electrochemical characterization by cyclic voltammetry (CV), galvanostatic charge-discharge (G-C/DC) and electrochemical impedance spectroscopy (EIS) clearly revealed that capacitive performances of LSCO are considerably improved by addition of 20 mass. % of RuO2. The registered capacitance for LSCO/RuO2 reaches the values of pure RuO2, which reveals the promoting influence of LSCO on RuO2 pseudocapacitance. The EIS analysis showed that RuO2 catalyzes the redox transition of Co species, with simultaneous proportional increase in pseudocapacitive RuO2 abilities while being hosted by LSCO. This intrinsic interactive promotion introduces LSCO/RuO2 composite as unique supercapacitive material. G-C/DC curves showed that LSCO/RuO2 is of modest cyclability with respect to pure LSCO and RuO2, although the capacitance losses with cycling are acceptably low.en
dc.language.isoensr
dc.publisherElseviersr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172060/RS//sr
dc.relationMinistry and DAAD, Germany, Project No.:57334757sr
dc.rightsopenAccesssr
dc.sourceElectrochimica Actasr
dc.subjectCapacitor electrodessr
dc.subjectOxide compositessr
dc.subjectRare earthssr
dc.subjectElectrocatalytic interactivitysr
dc.subjectSupercapacitive materialsr
dc.titleInteractive promotion of supercapacitance of rare earth/CoO3-based spray pyrolytic perovskite microspheres hosting the hydrothermal ruthenium oxideen
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractФриедрицх, Бернд; Ераковић, Сања; Стевановић, Јасмина; Панић, Владимир; Павловић, Мирослав М.; Митрић, Миодраг; Стопић, Срећко;
dc.citation.volume321
dc.citation.spage134721
dc.citation.rankM21~
dc.identifier.doi10.1016/j.electacta.2019.134721
dc.identifier.scopus2-s2.0-85071050628
dc.identifier.wos000485837700069
dc.type.versionpublishedVersionsr


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