A new route for the electrodeposition of platinum–nickel alloy nanoparticles on multi-walled carbon nanotubes

descriptionPublicationkeyboard_double_arrow_right Article 01 May 2007 China (People's Republic of) English Publisher:Elsevier BVJournal:Electrochimica Acta, volume 52, pages 5,873-5,878 (issn: 0013-4686,

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Authors: Zhao, Yue; E, Yifeng; Fan, Louzhen; Qiu, Yongfu; Yang, Shihe;

doi: 10.1016/j.electacta.2007.03.020

A new route for the electrodeposition of platinum–nickel alloy nanoparticles on multi-walled carbon nanotubes

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Abstract

An electrochemical method was developed to deposit platinum (Pt) and nickel (Ni) nanoparticles on multi-walled carbon nanotubes (MWCNTs) through a three-step process. X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX) show the alloy formation for Pt and Ni with a ratio of 1:1. The presence of Pt(0), Ni(0), Ni(OH)2, NiOOH and slight NiO was deduced from XPS data. Electrocatalytic properties of the resulting PtNi/MWCNT electrode for methanol oxidation reaction were investigated. Compared with Pt/MWCNT, an appreciably improved resistance to CO poisoning was observed for the PtNi/MWCNT electrode, which was interpreted by a mechanism based on the bifunctional catalysis. The successful preparation of PtNi/MWCNT nanocomposites opens a new path for an efficient dispersion of the promising electrocatalysts in the direct methanol fuel cells.

Country

China (People's Republic of)

Related Organizations

Beijing Normal University
China (People's Republic of)
Hong Kong Polytechnic University
China (People's Republic of)
Hong Kong University of Science and Technology (香港科技大學)
China (People's Republic of)

Keywords

Electrodeposition, 660, MWCNT, Platinum-nickel alloy, Electrocatalyst, Methanol oxidation

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