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Browse Journals & Magazines > Applied Physics Letters ...> Volume:88 Issue:25 Help

Platinum/multiwalled carbon nanotubes-platinum/carbon composites as electrocatalysts for oxygen reduction reaction in proton exchange membrane fuel cell

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3 Author(s)
Shaijumon, M.M. ; Alternative Energy Technology Laboratory, Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, India ; Ramaprabhu, S. ; Rajalakshmi, N.

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Pt-loaded multiwalled carbon nanotubes (Pt/MWCNTs) have been prepared by chemical reduction method using functionalized MWCNT synthesized by pyrolysis of acetylene over MmNi2 (Mm denotes misch metal) hydride catalyst. Composites of Pt/MWCNT and commercial Pt-loaded carbon black (Pt/C) have been used as electrocatalysts for oxygen reduction reaction in proton exchange membrane fuel cell (PEMFC). Cathode catalyst with 50% Pt/MWCNT and 50% Pt/C showed best performance due to better dispersion and good accessibility of MWCNT support and Pt electrocatalysts for oxygen reduction reaction in PEMFC. A maximum performance of 540 mV at a current density of around 535 mA cm-2 has been obtained.

Published in:
Applied Physics Letters  (Volume:88 ,  Issue: 25 )

Date of Publication: Jun 2006

Page(s):
253105 - 253105-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2214139
Date of Current Version :
18 June 2009
Issue Date :
Jun 2006

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