An Electrocatalyst Based on Carbon Nanotubes Coated with Poly(vinylpyrrolidone) Shows a High Tolerance to Carbon Monoxide in a Direct Methanol Fuel Cell

Zehui Yang, Naotoshi Nakashima

    研究成果: ジャーナルへの寄稿学術誌査読

    34 被引用数 (Scopus)

    抄録

    We describe a facile method to enhance the CO tolerance of a fuel-cell electrocatalyst dramatically based on carbon nanotubes. The electrocatalyst is composed of Pt deposited on carbon nanotubes wrapped in poly[2,2′-(2,6-pyridine)-5,5′-bibenzimidazole] (PyPBI) further covered by poly(vinylpyrrolidone) (PVP) through multipoint hydrogen bonding interactions between the PyPBI and PVP. The PVP-coated electrocatalyst showed a ∼10times higher CO tolerance compared to the non-PVP-coated electrocatalyst under a high (4 m) methanol concentration. Additionally, the PVP-coated electrocatalyst showed an enhancement in the Pt stability because of the stabilization of the Pt-NP by the PyPBI and PVP. After the durability test, the PVP-coated electrocatalyst still showed ∼8times higher CO tolerance because of the presence of the PVP bound stably with PyPBI. This study provides useful information for the design and fabrication of a state-of-the-art anodic electrocatalyst for direct methanol fuel cells.

    本文言語英語
    ページ(範囲)600-606
    ページ数7
    ジャーナルChemCatChem
    8
    3
    DOI
    出版ステータス出版済み - 2月 5 2016

    !!!All Science Journal Classification (ASJC) codes

    • 触媒
    • 物理化学および理論化学
    • 有機化学
    • 無機化学

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