Durability of novel sulfonated poly(arylene ether) membrane in PEFC operation

Makoto Aoki, Yohei Chikashige, Kenji Miyatake, Hiroyuki Uchida, Masahiro Watanabe*

*この研究の対応する著者

研究成果: Article査読

37 被引用数 (Scopus)

抄録

A novel proton conducting polymer electrolyte membrane, poly(arylene ether) ionomer containing sulfofluorenyl groups (SPE-1), was subjected to long term fuel cell operation. High durability of the SPE-1 membrane was confirmed by single cell test at 80 °C and at a constant current density of 0.2 A/cm2. Under 90% RH operation, superior hydrolytic stability of the SPE-1 membrane was demonstrated even after 5000 h with no noticeable degradations with respect to cell performances, ion exchange capacity, thickness, and molecular weight. Under 60% RH operation, some change in the molecular weight was observed after 2350 h presumably due to the oxidative degradation caused by the increased cross-over of reactant gases through the membrane.

本文言語English
ページ(範囲)1412-1416
ページ数5
ジャーナルElectrochemistry Communications
8
9
DOI
出版ステータスPublished - 2006 9月
外部発表はい

ASJC Scopus subject areas

  • 電気化学

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