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https://doi.org/10.5562/cca3452

Reduced Graphene Oxide/α-Fe2O3 Fibres as Active Material for Supercapacitor Application

Gabrijela Radić ; University of Zagreb, Faculty of Chemical Engineering and Technology, Department of Electrochemistry, Marulićev trg 19, HR-10000 Zagreb, Croatia
Ivan Šajnović ; University of Zagreb, Faculty of Chemical Engineering and Technology, Department of Electrochemistry, Marulićev trg 19, HR-10000 Zagreb, Croatia
Željka Petrović orcid id orcid.org/0000-0001-7609-7863 ; Ruđer Bošković Institute, Division of Materials Chemistry, Bijenička cesta 54, P.O. Box 180, HR-10002, Zagreb, Croatia
Marijana Kraljić Roković ; University of Zagreb, Faculty of Chemical Engineering and Technology, Department of Electrochemistry, Marulićev trg 19, HR-10000 Zagreb, Croatia


Puni tekst: engleski pdf 9.706 Kb

str. 481-490

preuzimanja: 1.028

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Sažetak

The composite hydrogel, composed of reduced graphene oxide and α-Fe2O3 fibres (rGO/α-Fe2O3), was successfully prepared by the hydrothermal procedure starting from GO and α-Fe2O3 nanofibres. According to the SEM and XRD results, α-Fe2O3 fibres are distributed between rGO sheets increasing the inter-sheet space. The rGO/α-Fe2O3 composite was tested as an active material in supercapacitor by means of cyclic voltammetry, galvanostatic charging/discharging and electrochemical impedance spectroscopy in 0.5 mol dm–3 Na2SO4. The obtained results confirmed a positive effect of the α-Fe2O3 addition on capacitive properties. Improved capacitive properties of the composite make this material suitable for supercapacitor application.

This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

composite, hematite fibres, hydrothermal method, reduced graphene oxide, supercapacitor

Hrčak ID:

217644

URI

https://hrcak.srce.hr/217644

Posjeta: 1.628 *