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Characterization of nitric acid functionalized carbon black and its evaluation as electrocatalyst support for direct methanol fuel cell applications

Paper ID Volume ID Publish Year Pages File Format Full-Text
42723 45938 2009 7 PDF Available
Title
Characterization of nitric acid functionalized carbon black and its evaluation as electrocatalyst support for direct methanol fuel cell applications
Abstract

This study presents results on PtRu electrocatalysts supported on both as received and functionalized carbon black. The electrochemical properties of both home-made and commercial PtRu electrocatalysts were compared to PtRu supported on functionalized carbon black. The PtRu nanoparticles were synthesized by the impregnation method and subsequent alcohol reduction. Transmission electron microscopy experiments revealed that the PtRu electrocatalysts supported on functionalized carbon black are more homogeneously distributed than all other studied materials. Cyclic voltammetric electrocatalyst curves experiments showed higher activity for the PtRu supported on functionalized carbon black. This enhanced performance is related to the better nanoparticle distribution on functionalized carbon black. The better performance can also be inferred by the better nanoparticles utilization. The nanoparticles are now located outside from the pore structure of the carbon black. Hence, the nanoparticles are more exposed and available to the reactants, enhancing the catalyst performance and avoiding the waste of noble catalysts.

Graphical abstractThis study presents results on PtRu electrocatalysts supported on functionalized carbon black. Cyclic voltammetric curves showed higher activity for the PtRu supported on functionalized carbon black. Such an enhanced performance is related to a better PtRu nanoparticle distribution and can also be inferred by the better nanoparticles utilization, nanoparticles that are outside from the carbon pore structure.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Carbon functionalization; HNO3; Electrocatalysis; Fuel cell; PEMFC; DMFC
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Characterization of nitric acid functionalized carbon black and its evaluation as electrocatalyst support for direct methanol fuel cell applications
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 355, Issues 1–2, 28 February 2009, Pages 132–138
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