Ni sulfide nano-sheets as an efficient standalone electrode in direct ethanol fuel cells

Enas Taha Sayed, A.g. Olabi*, Tabbi Wilberforce, Mohammed Al-Murisi, Kyu-jung Chae, Mohammad Ali Abdelkareem*

*Corresponding author for this work

Research output: Contribution to journalCorrection


Background: Direct alcoholic fuel cells such as DEFCs “direct ethanol fuel cells” have a high energy density and can potentially replace secondary batteries in portable applications. Two main challenges of the DEFCs are the low efficiency and the precious/expensive Pt-based electrodes. Methods: In this study, a standalone nickel sulfide electrode was grown on the surface of nickel foam via hydrothermal method followed by hydrothermal ion exchange. Significant findings: The prepared electrodes have a highly porous nanosheet structure demonstrating high ethanol oxidation activity. The electrode showed high stability and excellent mass transfer properties with a constant current density of 100 mAcm−2 at 0.5 V, two times that of the Ni-layered double hydroxide and ten times that of nickel foam. The superior activity was due to the enhanced charge transfer of the nickel sulfide (confirmed by EIS (electrochemical impedance spectroscopy)) and the improved mass transfer of the highly porous nanosheet structure. © 2023 Taiwan Institute of Chemical Engineers
Original languageEnglish
Article number104772
Number of pages8
JournalJournal of the Taiwan Institute of Chemical Engineers
Early online date3 Mar 2023
Publication statusPublished - 1 May 2023


  • Ethanol oxidation
  • Impedance spectroscopy
  • Mass transfer
  • Nanosheet structure
  • Nickel layered double hydroxide
  • Nickel sulfide
  • Standalone electrode


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