Alkaline Stability of Anion-Conductive Ionomer Coated on a Carbon Surface

Ziyi Han, Yuki Motoishi, Tsuyohiko Fujigaya

    研究成果: Contribution to journalArticle査読

    抄録

    Anion-exchange membrane fuel cells (AEMFCs) are promising technologies that allow the use of nonprecious metals as catalysts because the oxidation reduction reaction at the cathode occurs readily at the high pH of AEMFCs. However, the insufficient chemical stability of the anion-conductive materials in AEMFCs currently limits their development. We studied the chemical stability of the electrolyte in the catalyst layer of AEMFCs containing cationic dimethyl polybenzimidazole (mPBI). Although degradation was observed in an mPBI membrane under alkaline conditions, mPBI coated on a carbon support showed excellent alkaline stability. Because no glass transition temperature was observed for mPBI after coating on the support, the increase of chemical stability was probably associated with the decrease of polymer flexibility.

    本文言語英語
    ページ(範囲)17134-17139
    ページ数6
    ジャーナルACS Omega
    4
    17
    DOI
    出版ステータス出版済み - 10 22 2019

    All Science Journal Classification (ASJC) codes

    • 化学 (全般)
    • 化学工学(全般)

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