Aboelazm, Eslam Atef Abdelaziz and Khe, Cheng Seong and Muhammad Fadhlullah, Abd Shukur and Mohamed Saheed, Mohamed Shuaib and Mohammed Ali, Gomaa Abdelgawad and Chong, Kwok Feng (2024) Hollow cobalt carbide cubes / reduced graphene oxide nanocomposite via cyanide coordination polymer for supercapacitor applications. In: Solid State Phenomena. Trans Tech Publications Ltd., Switzerland, pp. 133-140. ISBN 1012-0394
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Abstract
Coordination polymers, a broad class of porous hybrid materials resulting from the connection of metal ions with organic ligands, showcase enduring porosity, well-organised crystalline structures, and open metal active sites that augment their metal ions' redox activity. This investigation focuses on examining a nanocomposite composed of cobalt carbide/reduced graphene oxide (Co3C/rGO) prepared through the copolymer method, serving as an electrode material for supercapacitor devices. The nanocomposite's structure and hollow cubic morphology were confirmed through X-ray diffraction, Raman spectroscopy, and field emission scanning electron microscopy (FESEM) analysis. Electrochemical properties were thoroughly assessed using cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge in 6M KOH with a voltage window of 0 V to 0.5 V. The Co3C/rGO electrode exhibited notable electrochemical performance, displaying a specific capacitance of 486.6 F g-1 at 1 mV s-1 and a low internal resistance of 0.58 Ω, surpassing existing literature due to its porous morphology. Additionally, to evaluate the nanocomposite's cycling stability, 5000 charge/discharge cycles were conducted, revealing a capacitive retention of 82% of its original capacitance after 5000 cycles. This underscores its excellent long-term durability as a high-performance material for supercapacitor applications.
| Item Type: | Book Chapter |
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| Uncontrolled Keywords: | Cobalt Carbide; Graphene; Hybrid Materials; Supercapacitor |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Industrial Sciences And Technology |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 15 Apr 2025 03:31 |
| Last Modified: | 15 Apr 2025 03:31 |
| URI: | http://umpir.ump.edu.my/id/eprint/44303 |
| Download Statistic: | View Download Statistics |
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