A highly durable fuel cell electrocatalyst based on double-polymer-coated carbon nanotubes

Mohamed R. Berber, Inas H. Hafez, Tsuyohiko Fujigaya, Naotoshi Nakashima

    研究成果: Contribution to journalArticle査読

    28 被引用数 (Scopus)

    抄録

    Driven by the demand for the commercialization of fuel cell (FC) technology, we describe the design and fabrication of a highly durable FC electrocatalyst based on double-polymer-coated carbon nanotubes for use in polymer electrolyte membrane fuel cells. The fabricated electrocatalyst is composed of Pt-deposited polybenzimidazole-coated carbon nanotubes, which are further coated with Nafion. By using this electrocatalyst, a high FC performance with a power density of 375 mW/cm 2 (at 70 Ëš C, 50% relative humidity using air (cathode)/H 2 (anode)) was obtained, and a remarkable durability of 500,000 accelerated potential cycles was recorded with only a 5% loss of the initial FC potential and 20% loss of the maximum power density, which were far superior properties compared to those of the membrane electrode assembly prepared using carbon black in place of the carbon nanotubes. The present study indicates that the prepared highly durable fuel cell electrocatalyst is a promising material for the next generation of PEMFCs.

    本文言語英語
    論文番号16711
    ジャーナルScientific reports
    5
    DOI
    出版ステータス出版済み - 11 23 2015

    All Science Journal Classification (ASJC) codes

    • 一般

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