Fe3O4/carbon nanocomposite: Investigation of capacitive & magnetic properties for supercapacitor applications

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dc.authorid0000-0002-6340-3064en_US
dc.contributor.authorSinan, Neriman
dc.contributor.authorÜnür Yılmaz, Ece
dc.date.accessioned2021-03-20T20:14:23Z
dc.date.available2021-03-20T20:14:23Z
dc.date.issued2016
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Kimya Bölümüen_US
dc.description.abstractFe3O4 nanoparticles with similar to 10 nm diameters were synthesized by an extremely low-cost, scalable and relatively biocompatible chemical co-precipitation method. Magnetic measurements revealed that Fe3O4 nanoparticles have bifunctional superparamagnetic and ferromagnetic character with saturation magnetization (Ms) values of 64 and 71 emu g(-1) at 298 K and 10 K, respectively. Pseudocapacitive Fe3O4 nanoparticles were then integrated into hazelnut shells - an abundant agricultural biomass - by an energy efficient hydrothermal carbonization method. Presence of magnesium oxide (MgO) ceramic template or its precursor in the hydrothermal reactor allowed simultaneous introduction of pores into the composite structure. Hierarchically micro-mesoporous Fe3O4/C nanocomposite possesses a high specific surface area of 344 m(2) g(-1). Electrochemical properties of Fe3O4/C nanocomposite were investigated by cyclic voltammetry and galvanostatic charge-discharge measurements in a conventional three-electrode cell. The Fe3O4/C nanocomposite is able to operate in a large negative potential window in 1 M Na2SO4 aqueous electrolyte (-1.2-0 V vs. Ag/AgCl). Synergistic effect of the Fe3O4 and carbon leads to enhanced specific capacitance, rate capability and cyclability making Fe3O4/C nanocomposite a very promising negative electrode material for asymmetric supercapacitors. (C) 2016 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipTUBITAK (the Scientific and Technological Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [112T570]; Middle East Technical University Central Laboratoryen_US
dc.description.sponsorshipAuthors are grateful to TUBITAK (the Scientific and Technological Research Council of Turkey) for funding this work (Project No: 112T570) and the Middle East Technical University Central Laboratory for their support in material characterizations.en_US
dc.identifier.doi10.1016/j.matchemphys.2016.09.016en_US
dc.identifier.endpage579en_US
dc.identifier.issn0254-0584
dc.identifier.issn1879-3312
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage571en_US
dc.identifier.urihttp://doi.org/10.1016/j.matchemphys.2016.09.016
dc.identifier.urihttps://hdl.handle.net/20.500.12885/1045
dc.identifier.volume183en_US
dc.identifier.wosWOS:000386402100069en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorSinan, Neriman
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofMaterials Chemistry And Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMagnetic nanocompositeen_US
dc.subjectBiomassen_US
dc.subjectHydrothermal treatmenten_US
dc.subjectMgO templatingen_US
dc.subjectSupercapacitoren_US
dc.titleFe3O4/carbon nanocomposite: Investigation of capacitive & magnetic properties for supercapacitor applicationsen_US
dc.typeArticleen_US

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