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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1412-1416
Number of pages5
JournalElectrochemistry Communications
Issue number9
Publication statusPublished - 2006 Sept
Externally publishedYes


  • Durability
  • Fuel cell test
  • Ionomer
  • PEFC
  • Poly(arylene ether)

ASJC Scopus subject areas

  • Electrochemistry


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