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Fabrication PEDOT coated PVA-GO nanofiber for supercapacitor


Mohd Abdah, Muhammad Amirul Aizat and Zubair, Nur Afifah and Azman, Nur Hawa Nabilah and Sulaiman, Yusran (2017) Fabrication PEDOT coated PVA-GO nanofiber for supercapacitor. Journal of Electroanalytical Chemistry, 192. pp. 161-169. ISSN 1572-6657; ESSN: 1873-2569


Conducting nanofibers comprised of poly(vinyl alcohol) (PVA)-graphene oxide (GO) nanofiber coated with poly(3,4-ethylenedioxythiophene) (PEDOT) for supercapacitor application was prepared through integrated techniques i.e. electrospinning and electrodeposition. The formation of smooth cross-linking nanofibers without beads proved that GO has uniformly distributed into PVA with an average diameter of 117 ± 32 nm. Field emission scanning electron microscopy (FESEM) images revealed that cauliflower-like structure of PEDOT grew well on the surface of PVA-GO nanofibers with high porosity. Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy proved the existence of PVA, GO, and PEDOT. PVA-GO/PEDOT nanocomposite showed the highest specific capacitance (224.27 F/g) compared to PEDOT (167.92 F/g) and PVA/PEDOT (182.73 F/g). PVA-GO/PEDOT nanocomposite exhibited 1.8 V wide operating potential windows which significantly can enhance its capacitive behaviour. PVA-GO/PEDOT nanocomposite has also demonstrated superior performance with the energy density and power density of 9.58 Wh/kg and 304.37 W/kg, respectively at 1.0 A/g current density. PVA-GO/PEDOT nanocomposite revealed the smallest resistance of charge transfer (Rct) and equivalent series resistance (ESR) indicating excellent charge propagation behaviour at the interfacial region. The composite exhibits a good capacity retention of 82.41% after 2000 CV cycles and further drops 11.27% after 5000 cycles caused by the swelling and shrinkage of the electrode material during the charging and discharging processes.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.matchemphys.2017.01.058
Publisher: Elsevier
Keywords: PVA nanofibers; Graphene; Poly(3,4-ethylenedioxythiophene); Electrospinning; Supercapacitor
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 20 Feb 2019 03:36
Last Modified: 20 Feb 2019 03:36
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.matchemphys.2017.01.058
URI: http://psasir.upm.edu.my/id/eprint/61838
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