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Physicochemical and electrochemical properties of carbon nanotube/graphite nanofiber hybrid nanocomposites for supercapacitor


Talalah Ramli, Nurul Infaza and Abdul Rashid, Suraya and Sulaiman, Yusran and Mamat, Md Shuhazlly and Mohd Zobir, Syazwan Afif and Krishnan, Shutesh (2016) Physicochemical and electrochemical properties of carbon nanotube/graphite nanofiber hybrid nanocomposites for supercapacitor. Journal of Power Sources, 328. pp. 195-202. ISSN 0378-7753; ESSN: 1873-2755


This work reports the combination of graphitic nanofibers (GNF) and carbon nanotubes (CNT) as the electrode material for supercapacitors. The hybrid CNT/GNF was prepared via a synthesis route that involved simple sonication and stirring. The loading of CNT was varied from 5 to 40% weight percentages. A specific capacitance of 174 Fg−1 has been obtained for 20 wt% CNT loading at 50 mV F g−1th 1 M H2SO4 aqueous solution as the electrolyte. The addition of 20 wt% CNT raised the specific capacitance by 87% more than the GNF electrodes. Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscope (TEM) reveals the random entanglement of CNT and GNF that create diffusion paths for ion transportation. Conformational changes were monitored by Raman spectroscopy, where two dominant peaks (D and G) showed strong intensities and sharp profiles. X-ray Diffraction spectroscopy (XRD) confirmed the purity of CNT/GNF hybrid nanocomposites. 20 wt% of CNT addition also shows an outstanding thermal stability. The marked improvement of the hybrid performance was attributed to the high conductivity of the two constituent materials, coupled with sufficient accessible active sites for electrochemical reactions that resulted in a synergistic behavior of the materials.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.jpowsour.2016.07.110
Publisher: Elsevier
Keywords: Carbon nanotube; Graphite nanofiber; Supercapacitors; Physicochemical; Electrochemical characterization
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 08 Nov 2017 04:31
Last Modified: 08 Nov 2017 04:31
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.jpowsour.2016.07.110
URI: http://psasir.upm.edu.my/id/eprint/53574
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