Platinum Integrated Graphene for Methanol Fuel Cells

Naigui Shang, P Papakonstantinou, P Wang, SRP Silva

Research output: Contribution to journalArticle

152 Citations (Scopus)

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.
LanguageEnglish
Pages15837-15841
JournalJournal Of Physical Chemistry C
Volume114
Issue number35
DOIs
Publication statusPublished - Aug 2010

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Methanol fuels
Graphite
Nanoclusters
Platinum
Fuel cells
Methanol
Electrodes
Carbon Nanotubes
Electrooxidation
Magnetron sputtering
Monolayers
Current density
Oxidation
Catalysts

Cite this

Shang, Naigui ; Papakonstantinou, P ; Wang, P ; Silva, SRP. / Platinum Integrated Graphene for Methanol Fuel Cells. In: Journal Of Physical Chemistry C. 2010 ; Vol. 114, No. 35. pp. 15837-15841.
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Platinum Integrated Graphene for Methanol Fuel Cells. / Shang, Naigui; Papakonstantinou, P; Wang, P; Silva, SRP.

In: Journal Of Physical Chemistry C, Vol. 114, No. 35, 08.2010, p. 15837-15841.

Research output: Contribution to journalArticle

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AU - Silva, SRP

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AB - 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.

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