A review of molecular-level mechanism of membrane degradation in the polymer electrolyte fuel cell

Takayoshi Ishimoto, Michihisa Koyama

Research output: Contribution to journalReview article

33 Citations (Scopus)

Abstract

Chemical degradation of perfluorosulfonic acid (PFSA) membrane is one of the most serious problems for stable and long-term operations of the polymer electrolyte fuel cell (PEFC). The chemical degradation is caused by the chemical reaction between the PFSA membrane and chemical species such as free radicals. Although chemical degradation of the PFSA membrane has been studied by various experimental techniques, the mechanism of chemical degradation relies much on speculations from ex-situ observations. Recent activities applying theoretical methods such as density functional theory, in situ experimental observation, and mechanistic study by using simplified model compound systems have led to gradual clarification of the atomistic details of the chemical degradation mechanism. In this review paper, we summarize recent reports on the chemical degradation mechanism of the PFSA membrane from an atomistic point of view.

Original languageEnglish
Pages (from-to)395-414
Number of pages20
JournalMembranes
Volume2
Issue number3
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology
  • Filtration and Separation

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