Reduced graphene oxide as efficient carbon support for Pd-based ethanol oxidation catalysts in alkaline media

Sigrid Wolf*, Michaela Roschger, Boštjan Genorio, Nejc Hodnik, Matija Gatalo, Francisco Ruiz-Zepeda, Viktor Hacker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The sluggish kinetics of the ethanol oxidation reaction (EOR) and the related development of low-cost, highly active and stable anode catalysts still remains the major challenge in alkaline direct ethanol fuel cells (ADEFCs). In this respect, we synthesized a PdNiBi nanocatalyst on reduced graphene oxide (rGO) via a facile synthesis method. The prepared composite catalyst was physicochemically characterized by SEM, STEM, EDX, ICP-OES and XRD to analyze the morphology, particle distribution and size, elemental composition and structure. The electrochemical activity and stability towards EOR in alkaline media were examined using the thin-film rotating disk electrode technique. The results reveal well-dispersed and strongly anchored nanoparticles on the rGO support,providing abundant active sites. The PdNiBi/rGO presents a higher EOR activity and stability compared to a commercial Pd/C ascribed to a high ECSA and synergistic effects between Pd, Ni and Bi and the rGO material. These findings suggest PdNiBi/rGO as a promising anode catalyst in ADEFC applications.
Original languageEnglish
Number of pages12
JournalJournal of Electrochemical Science and Engineering
Publication statusPublished - 8 Feb 2023
Event8th Regional Symposium on Electrochemistry of South-East Europe and 9th Kurt Schwabe Symposium: RSE-SEE 2022 - TU Graz, Graz, Austria
Duration: 11 Jul 202215 Jul 2022
Conference number: 8

Fields of Expertise

  • Advanced Materials Science
  • Mobility & Production


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