Ionic liquid-assisted synthesis of pt nanoparticles onto exfoliated graphite nanoplatelets for fuel cells

    Research output: Contribution to journalArticle

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    Abstract

    Exfoliated graphite nanoplatelets (GnP) has been investigated as an electrocatalyst support for fuel cell applications. GnP-supported Pt catalysts were synthesized by a microwave process in the presence of room temperature ionic liquids (RTILs). Thermal-oxidation resistance of GnP and GnP-supported Pt catalysts was studied by thermogravimetric analysis and compared with a variety of other carbon nanostructures: carbon black, graphite nanofiber, single-and multiwalled carbon nanotubes. GnP showed the best thermal-oxidative stability. The results obtained from X-ray diffraction, X-ray photoelectron spectroscopy, electrochemical testing, scanning and transmission electron microscopy showed that the RTIL synthesis method resulted in size reduction of Pt nanoparticle, improvement of Pt dispersion on GnP, and identification of the relationships between the mean size of Pt particles with increasing RTIL content. The interaction of Pt particles-GnP is stronger than that of a commercial Pt-CB, and the Pt/GnP catalysts prepared by this method have excellent electrocatalytic activity and stability for methanol oxidation.

    Original languageEnglish (US)
    Pages (from-to)12126-12136
    Number of pages11
    JournalACS Applied Materials and Interfaces
    Volume6
    Issue number15
    DOIs
    StatePublished - Aug 13 2014

    Profile

    Graphite
    Ionic liquids
    Catalyst supports
    Temperature
    Acetanilides
    Fuel cells
    Nanoparticles
    Bibliography of Medicine
    Cerebellar Ataxia
    Myosins
    Hot Temperature
    Multiwalled carbon nanotubes (MWCN)
    Electrocatalysts
    Oxidation resistance
    Nanofibers
    Carbon black
    Thermogravimetric analysis
    Nanostructures
    Methanol
    X ray photoelectron spectroscopy

    Keywords

    • electrocatalyst
    • exfoliated graphite nanoplatelet
    • fuel cell
    • platinum nanoparticles
    • room temperature ionic liquid

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Ionic liquid-assisted synthesis of pt nanoparticles onto exfoliated graphite nanoplatelets for fuel cells. / Do, Inhwan; Drzal, Lawrence T.

    In: ACS Applied Materials and Interfaces, Vol. 6, No. 15, 13.08.2014, p. 12126-12136.

    Research output: Contribution to journalArticle

    Do, Inhwan; Drzal, Lawrence T. / Ionic liquid-assisted synthesis of pt nanoparticles onto exfoliated graphite nanoplatelets for fuel cells.

    In: ACS Applied Materials and Interfaces, Vol. 6, No. 15, 13.08.2014, p. 12126-12136.

    Research output: Contribution to journalArticle

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    abstract = "Exfoliated graphite nanoplatelets (GnP) has been investigated as an electrocatalyst support for fuel cell applications. GnP-supported Pt catalysts were synthesized by a microwave process in the presence of room temperature ionic liquids (RTILs). Thermal-oxidation resistance of GnP and GnP-supported Pt catalysts was studied by thermogravimetric analysis and compared with a variety of other carbon nanostructures: carbon black, graphite nanofiber, single-and multiwalled carbon nanotubes. GnP showed the best thermal-oxidative stability. The results obtained from X-ray diffraction, X-ray photoelectron spectroscopy, electrochemical testing, scanning and transmission electron microscopy showed that the RTIL synthesis method resulted in size reduction of Pt nanoparticle, improvement of Pt dispersion on GnP, and identification of the relationships between the mean size of Pt particles with increasing RTIL content. The interaction of Pt particles-GnP is stronger than that of a commercial Pt-CB, and the Pt/GnP catalysts prepared by this method have excellent electrocatalytic activity and stability for methanol oxidation.",
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