Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 2, Pages 438-441Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.12.013
Keywords
Pt nanoparticles; Carbon nanotubes; Nitrogen-doped carbon nanotubes; Electrocatalysis; Proton exchange membrane fuel cells
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Ballard Power System Inc.
- Canada Research Chair (CRC)
- Ontario Early Researcher Award (ERA).
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The 3-D composite electrodes consisting of Pt nanoparticles supported on nitrogen-doped carbon nanotubes (CNx) grown directly on carbon paper were successfully prepared. The effect of the nitrogen atom incorporation in carbon nanotubes (CNTs) on the Pt nanoparticle dispersion and catalytic activities for the oxygen reduction reaction has been investigated. Compared to regular CNTs, highly dispersed Pt nanoparticles with smaller size (2-3 nm) and higher electrochemical Pt surface area as well as higher fuel cell performance were obtained for CNx. (C) 2008 Elsevier B.V. All rights reserved.
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