Improvement of DMFC electrode kinetics by using nanohorns catalyst support

L. Brandão*, D. Mirabile Gattia, R. Marazzi, M. Vittori Antisari, S. Licoccia, A. D'Epifanio, E. Traversa, A. Mendes

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

One of the factors limiting direct methanol fuel cells (DMFC) performance is the slow kinetics of methanol oxidation at the anode. The importance of the catalyst support for fuel cells has been recognized and different forms of carbon have been suggested. Single wall nanohorns (SWNH) are a new class of carbon with a similar graphitic structure of carbon nanotubes. They are self-assembling materials that produce aggregates of about 100 nm. In the present study, the comparison of the performance of a DMFC equipped with electrocatalysts supported on a commercial carbon black and on SWNH was carried out. The SWNH were synthesized by the arc discharge method in air. The deposition of the Pt and Pt/Ru catalysts on the carbon supports was accomplished by using ethylene glycol as reducing agent. The synthesized catalyst nanoparticles have a very small diameter size (ca. 2.5 nm) and they are uniformly distributed on both carbon supports. The supported electrode catalysts were tested in a DMFC and results indicate that employing SWNH is very promising showing catalytic activities 60 % higher.

Original languageEnglish (US)
Title of host publicationTHERMEC 2009
Pages1106-1111
Number of pages6
Volume638-642
DOIs
StatePublished - 2010
Externally publishedYes
Event6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 - Berlin, Germany
Duration: Aug 25 2009Aug 29 2009

Publication series

NameMaterials Science Forum
Volume638-642
ISSN (Print)0255-5476

Other

Other6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009
CountryGermany
CityBerlin
Period08/25/0908/29/09

Keywords

  • Catalyst
  • DMFC
  • Fuel cell
  • Single wall carbon nanohorns (SWNH)

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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