Energies (Nov 2021)

Influence of the Hydrophilic Surface of Nanofiber Support on the Performance of Hybrid Supercapacitors

  • Hyo-Young Kim,
  • Seon-Yeong Lee,
  • In-Yup Jeon,
  • Jeeyoung Shin,
  • Young-Wan Ju

DOI
https://doi.org/10.3390/en14227621
Journal volume & issue
Vol. 14, no. 22
p. 7621

Abstract

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Concerns associated with global warming and the depleting reserves of fossil fuels have highlighted the importance of high−performance energy storage systems (ESSs) for efficient energy usage. ESSs such as supercapacitors can contribute to improved power quality of an energy generation system, which is characterized by a slow load response. Composite materials are primarily used as supercapacitor electrodes because they can compensate for the disadvantages of carbon or metal oxide electrode materials. In this study, a composite of oxide nanoparticles loaded on a carbon nanofiber support was used as an electrode material for a hybrid supercapacitor. The addition of a small amount of hydrophilic FeN@GnP (Fe− and N−doped graphene nanoplates) modified the surface properties of carbon nanofibers prepared by electrospinning. Accordingly, the effects of the hydrophobic/hydrophilic surface properties of the nanofiber support on the morphology of Co3O4 nanoparticles loaded on the nanofiber, as well as the performance of the supercapacitor, were systematically investigated.

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