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Improvement of DMFC electrode kinetics by using nanohorns catalyst support

TitleImprovement of DMFC electrode kinetics by using nanohorns catalyst support
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2010
AuthorsBrandão, L., Mirabile Gattia Daniele, Marazzi R., M. Antisari Vittori, Licoccia S., D'Epifanio A., Traversa E., and Mendes A.
JournalMaterials Science Forum
Volume638-642
Pagination1106-1111
ISBN Number0878492941; 9780878492947
ISSN02555476
KeywordsArc-discharge method, Carbon black, Carbon nanotubes, Carbon support, Catalysis, Catalyst nanoparticle, Catalyst supports, Catalytic activity, Direct methanol fuel cells (DMFC), Electric discharges, Electrocatalysts, Electrode catalysts, Electrode kinetics, Ethylene, Ethylene glycol, Graphitic structures, Kinetics of methanol oxidation, Methanol, Methanol fuels, Nanohorns, Platinum, Self-assembling materials, Single Wall, Single wall carbon nanohorn, Single-walled carbon nanotubes (SWCN), Small-diameter
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. © (2010) Trans Tech Publications.

Notes

cited By 6; Conference of 6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 ; Conference Date: 25 August 2009 Through 29 August 2009; Conference Code:79243

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-75849125668&doi=10.4028%2fwww.scientific.net%2fMSF.638-642.1106&partnerID=40&md5=d1a6f1f5fbcc89c74f16e6e5ad8c0e4e
DOI10.4028/www.scientific.net/MSF.638-642.1106
Citation KeyBrandão20101106