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A highly active PtNi/C electrocatalyst for methanol electro-oxidation in alkaline media

Paper ID Volume ID Publish Year Pages File Format Full-Text
51367 46840 2010 4 PDF Available
Title
A highly active PtNi/C electrocatalyst for methanol electro-oxidation in alkaline media
Abstract

A carbon supported PtNi/C electrocatalyst synthesized via a polyol process was characterized by XRD, TEM and voltammetry techniques. The XRD analysis showed a decreased lattice constant of Pt for the PtNi/C catalyst compared with the Pt/C, indicating partial PtNi alloy formed. The PtNi/C exhibited enhanced mass activity towards methanol oxidation reaction as well as decreased CO stripping currents in alkaline media compared with the Pt/C. Density functional theory studies revealed the electronic structure modification of Pt by Ni atoms and weakened CO adsorption energy on the Pt3Ni than on the Pt4 clusters, which may account for the increased MOR activity.

Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► The MOR activity of PtNi is improved due to a weakened CO adsorption on surface.

Keywords
Electrocatalyst; Methanol oxidation; Platinum–nickel; Carbon monoxide; DFT
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A highly active PtNi/C electrocatalyst for methanol electro-oxidation in alkaline media
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 1, 25 October 2010, Pages 67–70
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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