Carboxylic Graphene-Supported Platinum and Platinum-Palladium Nanoparticles with High Electrocatalytic Activity for Methanol Oxidation

Abstract:

Pt, Pd and Pt-Pd nanoparticles (NPs) were synthesized on carboxylic graphene (CGR) sheets. The nanocomposites were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectra (FTIR) and UVvis absorption spectroscopy. Their electrocatalytic activity for methanol oxidation was also investigated. The results showed the peak current density of methanol oxidation of Pt NPs-Graphite oxide (GO), Pd NPs-CGR, Pt NPs-CGR and Pt-Pd NPs-CGR is 12.2μA/cm², 14.1μA/cm², 15.1μA/cm² and 21.5μA/cm² respectively. The nanocomposite of CGR as catalyst supports and Pt-Pd NPs as catalyzers is promising for direct methanol fuel cells.

• Periodical: Applied Mechanics and Materials (Volume 320)
• Pages: 670-674
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.320.670
• Online since: May 2013
• Authors: Qing Zhou, Guang Can Wang, Long Yang, Yun Yang, Yang Xu
• Keywords: Carboxylic Graphene, Electrocatalytic Activity, Fuel Cell (FC), Methanol Oxidation, Platinum-Palladium Nanoparticles

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