Comparison activity of Fe-Co/NG and Fe-Co/MWCNT Bimetallic Catalysts for Oxygen Reduction Reaction in Fuel Cell Cathode

Document Type : Research Article


School of Chemical Engineering, Iran University of Science and Technology, Tehran, I.R. IRAN


In this work, the electrocatalytic performance of nitrogen-doped graphene (NG)-based catalyst for Oxygen Reduction Reaction (ORR) has been compared with its counterpart while supported on MultiWall Carbon NanoTubes (MWCNTs).Nanoflower-like NG with designed nitrogen types is directly synthesized using a low-temperature solvothermal process Fe and Co nanoparticles were precipitated on NG and for comparison on MWCNTs using a modified polyol method.
The morphology of the NG is studied using scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The synthesized electrocatalysts are characterized using transmission electron microscopy and energy-dispersive X-ray spectroscopy.The electrocatalytic properties of NG, Fe-Co/NG, and Fe-Co/MWNT catalysts are investigated for ORR in 0.1 M KOH. Cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance spectroscopy are used to measure electrocatalytic activity. The Fe-Co/NG catalyst exhibited higher ORR activity than NG and Fe-Co/MWNT catalysts.


Main Subjects

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