Carbon-Nickel Oxide Nanofiber based Supercapacitors for Improvement of Electrochemical Performance

Abstract:

Now a days, demand for electrical energy is increasing because most of our gadgets and devices based on electricity. Due to the depletion of fossil fuel much more attention is given to renewable energy sources and devices to store that energy. Between these energy storage devices electrochemical energy storage devices has got more attention and among electrochemical energy storage devices, batteries are dominant, but they experience some safety issue, slow charge transfer and cannot meet high power requirement for numerous applications. Thus, as compare to batteries supercapacitor have high power density and fast charge transfer. So much more attention is going on to increase the performance of supercapacitors. In this study, hydrothermal method is used to synthesis rGO/NiO composite and electrospinning to fabricate rGO/NiO composite nanofibers. Scanning electron microscopy (SEM) and x-ray diffraction (XRD) is performed to study morphological and structural properties. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) are performed to study the electrochemical behavior. Reduced graphene oxide shows specific capacitance as low as 91.6 F/g. NiO nanostructures, rGO/NiO composite and rGO/NiO composite nanofibers shows specific capacitance of 256.4 F/g, 537.8 F/g and 663.8 F/g respectively.

• Periodical: Key Engineering Materials (Volume 992)
• Pages: 13-20
• DOI: https://doi.org/10.4028/p-4pLm4G
• Online since: October 2024
• Authors: Zunair Arslan, Zeeshan Abdullah*, Abdul Waheed Anwar, Inam Ul Haq, Muhammad Awais Raza
• Keywords: Electrochemical Impedance, Electrospinning Technique, Energy Storage Devices

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