Abstract
In this present work, the transition metal oxides of SnO2 and SnO2/rGO nanocomposite were synthesized through a facile hydrothermal method for supercapacitor electrode material applications. The structural, morphological, and elemental analysis of the synthesised samples were characterised by X-ray diffractometer technique (XRD), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray analysis (EDX), and High-resolution transmission electron microscopy (HR-TEM). The morphology of SnO2 was an agglomeration of quasi-spherical-shaped particles with a diameter range of 12–19 nm, as observed using the HR-TEM technique. The optical properties were characterised by UV-vis and Raman spectroscopy. The electrochemical performance of SnO2 and SnO2/rGO nanocomposite electrode was studied in a 3 M KOH electrolyte. A specific capacitance of 346 F g− 1 at a current density of 0.95 A g− 1 for the SnO2/rGO nanocomposite electrode was recorded, which was significantly higher than that of the as-synthesised SnO2 electrode (267 F g− 1). The higher capacitance obtained was due to the synergistic effect of excellent conductivity and a high surface area of rGO within the composite electrode. The exceptional electrochemical properties clearly indicate that the SnO2/rGO nanocomposites are the best for highly efficient pseudocapacitor electrodes in future energy storage device applications.
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The data that supports the findings of this study is not openly available due to ethical reasons.
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Acknowledgements
The authors gratefully acknowledge the postgraduate research committees of PAPUA NEW GUINEA UNIVERSITY OF TECHNONLOGY and THE UNIVERSITY OF GOROKA for their financial assistance.
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Experimental, data curation, Formal analysis, and writing-original draft, H.O.; Experimental, Formal analysis, M.W.; Formal analysis, investigation and visualization, D.K. and G.A.; Conceptualization, data curation, visualization, supervision and Writing-review & editing, S.V.
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Osora, H., Kolkoma, D., Anduwan, G. et al. Hydrothermally Grown SnO2 and SnO2/rGO Nanocomposite and Its Physio-Electrochemical Studies for Pseudocapacitor Electrode Applications. J Clust Sci 35, 891–901 (2024). https://doi.org/10.1007/s10876-023-02517-5
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DOI: https://doi.org/10.1007/s10876-023-02517-5