International Journal of Electrochemical Science · 2015 · 25 citations · 16 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemical EngineeringEnergy MaterialsNanomaterialsElectrode MaterialsEnergy Storage MaterialsMetal Oxide NanomaterialsNanomaterials For Energy StorageSupercapacitor MaterialsSupercapacitorsCapacitanceCycling StabilityElectrospinningElectrospun NanofibersMicroscopySupercapacitors Based On Metal Oxide NanomaterialsTitanium OxidesX-ray Diffraction Analysis
In this study, novel Fe-doped amorphous TiO2/C nanofibers were successfully synthesized using a simple electrospinning technique. Typically, calcination of electrospun mats composed of titanium isopropoxide, iron acetate and polyvinylpyrrolidone (PVP) in argon atmosphere resulted in producing the introduced nanofibers. Scanning electronic microscopy (SEM), X-ray diffraction (XRD), transmission electron microscope (TEM), and X-ray photoelectron spectroscopy (XPS) were used for characterization of the produced nanofibers. The obtained nanofibers exhibit good electrochemical properties, presenting enhanced capacitive behavior with maximum specific capacitance of 137 F/g at a scan rate of 5mV/s in 1M KOH aqueous solution. The enhancement in the capacitance property of these materials could be attributed to the increased conductivity of TiO2. Remarkably, it exhibits an excellent cycling stability.
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