Sub-nano-Pt cluster supported on graphene nanosheets for CO tolerant catalysts in polymer electrolyte fuel cells

Eunjoo Yoo, Tatsuhiro Okada, Tomoaki Akita, Masanori Kohyama, Itaru Honma, Junji Nakamura

    Research output: Contribution to journalArticle

    98 Citations (Scopus)

    Abstract

    The carbon monoxide (CO) tolerance performance of polymer electrode fuel cells (PEFCs) was studied for a catalyst composed of graphene nanosheets (GNS) with sub-nano-Pt clusters. The Pt catalysts supported on the GNS showed a higher CO tolerance performance in the hydrogen oxidation reaction (HOR), which was significantly different from that of platinum on carbon black (Pt/CB). It is proposed that the presence of the sub-nano-Pt clusters promotes the catalytic activity and that the substrate carbon material alters the catalytic properties of Pt via the interface interactions between the graphene and the Pt.

    Original languageEnglish
    Pages (from-to)110-115
    Number of pages6
    JournalJournal of Power Sources
    Volume196
    Issue number1
    DOIs
    Publication statusPublished - 2011 Jan 1

    Keywords

    • CO tolerance
    • Graphene nanosheet
    • Sub-nano-Pt clusters

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Energy Engineering and Power Technology
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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