Application of Low-Cost Me-N-C (Me = Fe or Co) Electrocatalysts Derived from EDTA in Direct Methanol Fuel Cells (DMFCs)

Co-N-C and Fe-N-C electrocatalysts have been prepared by mixing Fe or Co precursors, ethylene diamine tetra acetic acid (EDTA) as a nitrogen source, and an oxidized carbon. These materials were thermally treated at 800 °C or 1000 °C under nitrogen flow to produce four samples, named CoNC8, CoNC10, F...

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Bibliographic Details
Published in:Materials 2018-07, Vol.11 (7), p.1193
Main Authors: Lo Vecchio, Carmelo, Aricò, Antonino Salvatore, Baglio, Vincenzo
Format: Article
Language:English
Subjects:
Acetic acid
Alcohol
Carbon
Catalysis
Catalysts
Cathodes
Cobalt
Electrocatalysts
Electrodes
Ethylenediaminetetraacetic acids
Fuel cells
Heat
Hot pressing
Iron
Low cost
Methanol
Nitrogen
Oxygen reduction reactions
Spectrum analysis
Transmission electron microscopy
X ray photoelectron spectroscopy
X ray spectra
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Summary:Co-N-C and Fe-N-C electrocatalysts have been prepared by mixing Fe or Co precursors, ethylene diamine tetra acetic acid (EDTA) as a nitrogen source, and an oxidized carbon. These materials were thermally treated at 800 °C or 1000 °C under nitrogen flow to produce four samples, named CoNC8, CoNC10, FeNC8, and FeNC10. They have been physicochemically characterized by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Direct methanol fuel cell (DMFC) analyses have been carried out to investigate the performance of the nonprecious cathode catalysts, using a low amount of Pt (0.7 mg/cm²) at the anode side. It appears that FeNC8 is the best performing low-cost cathode catalyst in terms of higher oxygen reduction reaction activity and methanol tolerance.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma11071193