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Incorporation of iron oxide into CNT/GNF as a high performance supercapacitor electrode


Ramli, Nurul Infaza Talalah and Abdul Rashid, Suraya and Mamat, Md Shuhazlly and Sulaiman, Yusran and Krishnan, Shutesh (2018) Incorporation of iron oxide into CNT/GNF as a high performance supercapacitor electrode. Materials Chemistry and Physics, 212. 318 - 324. ISSN 0254-0584; ESSN: 1879-3312


CNT/GNF/Fe₂O₃ ternary composites were synthesized via a simple hydrothermal route. The electrochemical findings reveal that the incorporation of iron oxide (Fe₂O₃) into CNT/GNF (174 F g⁻ˡ) boosts the specific capacitance (Cs) to 307 F g⁻ˡ at 10 mV s⁻ˡ. The system also shows good capacity retention, as it maintained 92% of its original capacitance after 200 cyclic voltammetry cycles. Physicochemical characterization shows that Fe₂O₃ was anchored randomly on the CNT/GNF sidewalls, forming a network for facile ion diffusion. The improved supercapacitance of CNT/GNF/Fe₂O₃ can be ascribed to the synergistic effect of the double-layer capacitance of CNT/GNF and the pseudocapacitance of Fe₂O₃.

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Additional Metadata

Item Type: Article
Divisions: Centre for Extension, Entrepreneurship and Professional Advancement
Centre of Excellence for Catalysis Science and Technology
Faculty of Engineering
Faculty of Science
DOI Number: https://doi.org/10.1016/j.matchemphys.2018.03.044
Publisher: Elsevier
Keywords: CNT; GNF; Iron oxide; Supercapacitors; Physicochemical; Electrochemical
Depositing User: Mr. Sazali Mohamad
Date Deposited: 26 Feb 2020 09:06
Last Modified: 26 Feb 2020 09:06
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=/10.1016/j.matchemphys.2018.03.044
URI: http://psasir.upm.edu.my/id/eprint/74639
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