Synthesis and Electrochemical Characterization of rGO/CoFe2O4 Nanocomposite Material
Main Article Content
Abstract
The rGO material was modified with CoFe2O4 nanoparticles by a combination of aqueous precipitation at various pH conditions and reduction at high temperatures. The obtained rGO/CoFe2O4 composite has a porous structure with a substantial surface area and pore volume. At pH 10, the synthesized composite has a specific surface area of 270 m2/g, and the CoFe2O4 particle size is approximately 50 nm. As an electrode material in a supercapacitor system, the material has a specific capacitance of 383 F/g at a current density of 0.1 A/g, and after 1000 cycles, its specific capacitance remains at 91.5%. The obtained results demonstrate that the modification of rGO with CoFe2O4 nanoparticles is an advanced and effective approach to enhancing the electrochemical properties of materials.
Keywords:
rGO aerogel, CoFe2O4, composite material, supercapacitor.
References
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https://doi.org/10.1039/C7RA07056J.
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Vol. 442, 2018, pp. 138-147, https://doi.org/10.1016/j.apsusc.2018.02.152.
[12] J. Pan, S. Li, F. Li, T. Yu, Y. Liu, L. Zhang, L. Ma, M. Sun, X. Tian, The NiFe2O4/NiCo2O4/GO Composites Electrode Material Derived from Dual-MOF for High Performance Solid-state Hybrid Supercapacitors, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 609, 2021, pp. 125650,
https://doi.org/10.1016/j.colsurfa.2020.125650.
[13] L. Zheng, L. Guan, G. Yang, C. Sanming, H. Zheng, One-pot synthesis of CoFe2O4 /rGO hybrid Hydrogels with 3D Networks for High Capacity Electrochemical Energy Storage Devices, RSC Advances, Vol. 8, 2018, pp. 8607-8614, https://doi.org/10.1039/C8RA00285A.
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https://doi.org/10.1007/s11581-019-03114-1.
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https://doi.org/10.1016/j.proeng.2017.04.118.
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[18] A. Shanmugavani, R. K. Selvan, S. Layek, L. Vasylechko, S. Chinnappanadar, Influence of pH and Fuels on the Combustion Synthesis, Structural, Morphological, Electrical and Magnetic Properties of CoFe2O4 Nanoparticles, Materials Research Bulletin, Vol. 71, 2015, pp. 122-132, https://doi.org/10.1016/j.materresbull.2015.04.008.
[19] J. Thomas, N. Thomas, F. Girgsdies, M. Beherns, X. Huang, V. D. Sudheesh, V. Sebastian, Synthesis of Cobalt Ferrite Nanoparticles by Constant pH Co-precipitation and Their High Catalytic Activity in CO Oxidation, New Journal of Chemistry, Vol. 41, 2017, pp. 7356-7363, https://doi.org/10.1039/C7NJ00558J.
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https://doi.org/10.1016/j.jssc.2010.10.019.
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https://doi.org/10.4209/aaqr.2018.10.0372.