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Platinum Integrated Graphene for Methanol Fuel Cells

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Shang, Naigui, Papakonstantinou, P, Wang, P and Silva, SRP (2010) Platinum Integrated Graphene for Methanol Fuel Cells. The Journal of Physical Chemistry C, 114 (35). pp. 15837-15841. [Journal article]

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URL: http://pubs.acs.org/doi/full/10.1021/jp105470s

DOI: doi/abs/10.1021/jp105470s

Abstract

Uniform and porous graphene nanoflake films (GNFs) have been investigated as a support for catalytic Pt nanoclusters in direct methanol electro-oxidation. Pt nanoclusters of varying thickness are deposited on GNFs using magnetron sputtering, and their effects on the electrocatalytic activity for oxidizing methanol are systemically studied. GNF supported Pt nanoclusters with ultralow catalyst loading exhibit high performance for methanol electrocatalytic oxidation with a large mass-specific peak current density and a ratio of forward to backward peak currents up to 1.4. These characteristics compare favorably to the majority of Pt C based electrodes, except for those of carbon nanotubes with Pt decoration on both the inner and the outer wall surfaces. The results obtained are ascribed to a highly coupled network made of high-density 2 4nmPt monolayer nanoclusters on both the basal and edge planes of each nanoflakes of graphene. GNFs are a promising support material for developing next-generation advanced Pt based fuel cells and their relevant electrodes in the field of energy.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:15431
Deposited By:Professor Pagona Papakonstantinou
Deposited On:01 Sep 2010 13:55
Last Modified:18 Aug 2011 11:57

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