Hydrothermal growth of FeMoO4 nanosheets on electrospun carbon nanofibers as freestanding supercapacitor electrodes

Ashwin Khadka, Edmund Samuel, Shrayas Pradhan, Bhavana Joshi, Ali Aldalbahi, Mohamed El-Newehy, Hae Seok Lee, Sam S. Yoon

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this study, an electrospinning method was used to produce highly conductive freestanding carbon nanofibers (CNFs). The freestanding CNFs are compatible with hierarchical growth techniques, such as hydrothermal processes, for the nanostructure engineering of supercapacitor electrodes with enhanced electrochemically active sites. Therefore, the flower-like FeMoO4@CNF nanosheets were investigated to improve the electrochemical performance using aqueous and neutral electrolytes (Na2SO4 and K2SO4). The optimized FeMoO4@CNF electrode exhibits areal capacitances of 252 and 220 mF·cm−2 at a high current density of 2.5 mA·cm−2 with Na2SO4 and K2SO4 electrolytes, respectively. The wide potential window (1.6 V) of the symmetric supercapacitor delivered maximum energy densities of 22.4 and 19.6 μWh·cm−2 at a power density of 2 mW·cm−2 for Na2SO4 and K2SO4 electrolytes, respectively.

Original languageEnglish
Pages (from-to)9398-9406
Number of pages9
JournalCeramics International
Issue number6
Publication statusPublished - 2024 Mar 15

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.


  • Carbon nanofiber
  • Electrospinning
  • FeMoO
  • Freestanding electrode
  • Supercapacitor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry


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