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Improvement of DMFC Electrode Kinetics by using Nanohorns Catalyst Support

Title
Improvement of DMFC Electrode Kinetics by using Nanohorns Catalyst Support
Type
Article in International Conference Proceedings Book
Year
2010
Authors
L. Brandão
(Author)
FEUP
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Daniele Mirabile Gattia
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Renzo Marazzi
(Author)
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Marco Vittori-Antisari
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Silvia Licoccia
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Alessandra D’Epifanio
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Enrico Traversa
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A. Mendes
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Conference proceedings International
Pages: 1106-1111
6th International Conference on Processing and Manufacturing of Advanced Materials
Berlin, GERMANY, AUG 25-29, 2009
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Publicação em ISI Web of Science ISI Web of Science
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Scientific classification
FOS: Engineering and technology > Other engineering and technologies
CORDIS: Physical sciences > Chemistry
Other information
Authenticus ID: P-003-D0X
Abstract (EN): 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.
Language: English
Type (Professor's evaluation): Scientific
Notes: Revista indexada no Journal Citation Reports.
No. of pages: 6
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