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Effects of Different Carbon Nanotube Supported Catalysts on Methanol and Ethanol Electro-Oxidation

Published online by Cambridge University Press:  31 January 2011

Raghavendar Reddy Sanganna Gari ,
Zhou Li  and
Lifeng Dong
Raghavendar Reddy Sanganna Gari
Affiliation:
[email protected], Missouri State University, Physics, Astronomy, and Materials Science, Springfield, Missouri, United States
Zhou Li
Affiliation:
[email protected], Missouri State University, Greenwood Laboratory School, Springfield, Missouri, United States
Lifeng Dong
Affiliation:
[email protected], Missouri State University, Physics, Astronomy, and Materials Science, Springfield, Missouri, United States
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Abstract

In this work, Pt and Pt-Ru nanoparticles were synthesized on both single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs). Effects of different nanotube supports on electrocatalytic activity of Pt and Pt-Ru nanoparticles for methanol and ethanol oxidations were investigated using cyclic voltammetry and electrochemical impedance spectroscopy. In comparison to MWCNTs, SWCNT supported Pt and Pt-Ru catalysts demonstrate better electrocatalytic activities in terms of forward peak current density, the ratio of forward peak current density to reverse peak current density, and charge transfer resistance. This study indicates that SWCNTs can serve as effective catalyst supports for both direct methanol and ethanol fuel cells.

Keywords

catalyticnanostructurePt
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1213: Symposium T – Nanomaterials for Polymer Electrolyte Membrane Fuel Cells , 2009 , 1213-T08-17
Copyright
Copyright © Materials Research Society 2010

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