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A new route for the electrodeposition of platinum–nickel alloy nanoparticles on multi-walled carbon nanotubes
- Source :
-
Electrochimica Acta . May2007, Vol. 52 Issue 19, p5873-5878. 6p. - Publication Year :
- 2007
-
Abstract
- 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. [Copyright &y& Elsevier]
- Subjects :
- *PLATINUM
*NICKEL
*NANOPARTICLES
*X-ray spectroscopy
Subjects
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 52
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 24971290
- Full Text :
- https://doi.org/10.1016/j.electacta.2007.03.020