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Electrooxidation of methanol on highly active and stable Pt–Sn–Ce/C catalyst for direct methanol fuel cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
46186 46433 2012 8 PDF Available
Title
Electrooxidation of methanol on highly active and stable Pt–Sn–Ce/C catalyst for direct methanol fuel cells
Abstract

Carbon supported Pt–Sn–Ce and Pt–Sn catalysts have been synthesized by a polyol reduction method and compared for methanol oxidation reaction (MOR). X-ray photoelectron spectroscopic (XPS), X-ray diffraction (XRD), and transmission electron microscopic (TEM) analyses reveal the beneficial effects of the Ce component in Pt–Sn–Ce/C for MOR, despite its low content. Electrochemical techniques such as COad stripping, linear scan, and derivative voltammetries along with electrochemical impedance spectroscopy (EIS) were employed to analyze MOR on Pt–Sn–Ce/C and Pt–Sn/C from a mechanistic point of view. Accelerated durability test (ADT) and single cell test of Pt–Sn–Ce/C in comparison to a commercial PtRu/C catalyst demonstrate the superior performance of Pt–Sn–Ce/C from stability and activity points of view.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Pt–Sn–Ce catalysts exhibit superior catalytic activity for methanol oxidation. ► Pt–Sn–Ce catalysts exhibit better stability than the conventional Pt–Ru catalysts. ► The addition of Ce into Pt–Sn enhances the oxidation of CO to CO2.

Keywords
Methanol oxidation reaction; Pt–Sn catalyst; Pt–Sn–Ce catalyst; Electrochemical stability; Direct methanol fuel cell
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Electrooxidation of methanol on highly active and stable Pt–Sn–Ce/C catalyst for direct methanol fuel cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 121–122, 13 June 2012, Pages 154–161
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
Any Questions? feel free to contact us