Abstract
In this work, platinum (Pt), Pt–Cr, Pt–Co, and Pt–Cr–Co nanoparticles were synthesized on single-walled carbon nanotubes, and their effects on electrocatalytic activity for methanol and ethanol oxidations were investigated using cyclic voltammetry and electrochemical impedance spectroscopy. In comparison to Pt, Pt–Cr, and Pt–Co, Pt–Cr–Co nanoparticles demonstrate better catalytic characteristics for methanol and ethanol oxidations, such as forward peak current density, resistance to carbon monoxide poisoning, peak potential for oxidation, and charge transfer resistance. This study indicates that Pt-trimetallic nanoparticles could be desirable catalyst candidates for both direct methanol and ethanol fuel cells.
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