Durability of the electrocatalyst fabricated based on carbon nanotubes

T. Fujigaya, M. R. Berber, N. Nakashima

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    We describe the fabrication of a well-defined carbon nanotubes (CNTs)-based composite, in which the CNTs are individually wrapped by a polymer in homogeneous fashion and platinum nanoparticles (Pt) are immobilized on the polymer-wrapped CNTs. Polybenzimidazoles (PBIs) are used for the wrapping polymer since a strong adsorption of PBIs onto the CNT surfaces enables the exfoliation of CNT bundles and nanometer-thick PBI wrapping layer serves as a glue for the efficient immobilization of Pt. We demonstrate the use of the composite for the polymer electrolyte fuel cell (PEFC) electrocatalyst after acid doping. Single cell tests reveal that the ultra-thin PBI-wrapping layer around the CNTs serves as a proton conducting layer to deliver protons in the catalyst membrane. PEFCs using the composite show an excellent fuel cell performance at 120 °C under non-humid atmosphere, whereas the conventional Nafion-based PEFCs are not workable in such condition. Durability of the electrocatalyst was studied.

    Original languageEnglish
    Title of host publicationPolymer Electrolyte Fuel Cells 12, PEFC 2012
    PublisherElectrochemical Society Inc.
    Pages1309-1314
    Number of pages6
    Edition2
    ISBN (Print)9781607683506
    DOIs
    Publication statusPublished - 2013
    Event12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting - Honolulu, HI, United States
    Duration: Oct 7 2012Oct 12 2012

    Publication series

    NameECS Transactions
    Number2
    Volume50
    ISSN (Print)1938-5862
    ISSN (Electronic)1938-6737

    Other

    Other12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting
    Country/TerritoryUnited States
    CityHonolulu, HI
    Period10/7/1210/12/12

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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