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

Ziyi Han, Yuki Motoishi, Tsuyohiko Fujigaya

研究成果: Contribution to journalArticle

抜粋

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.

元の言語英語
ページ(範囲)17134-17139
ページ数6
ジャーナルACS Omega
4
発行部数17
DOI
出版物ステータス出版済み - 10 22 2019

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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