Study on deterioration mechanism of polymer electrolyte fuel cell

Hideki Itou, Shigeru Tsurumaki, Takuya Moriga, Akihiko Yamada, Gen Inoue, Yosuke Matsukuma, Masaki Minemoto

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

During the rated continuous test of a PEFC stack under stationary PEFC system conditions, the potential of several cells fell remarkably and the test could not be continue. The cause of cell potential fall was confirmed to be thinning of the polymer electrolyte membrane (PEM) in the degraded cells and cross leakage of hydrogen from the anode. Rated continuous test under different condition of relative humidity revealed that low humidity conditions accelerate cell potential fall and PEM degradation. An, open circuit voltage (OCV) accelerated durability test further revealed that PEM degradation is chemical degradation caused by three factors (low humidity, presence of hydrogen and oxygen). It is indicated that several radicals are concerned with PEM chemical degradation.

Original languageEnglish
Pages (from-to)184-190
Number of pages7
Journalkagaku kogaku ronbunshu
Volume35
Issue number1
DOIs
Publication statusPublished - Sep 18 2009

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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