Preparation and evaluation of sulfonated-fluorinated poly(arylene ether)s membranes for a proton exchange membrane fuel cell (PEMFC)

Heung Chan Lee, Hyun Sil Hong, You Mee Kim, Sung Ho Choi, Ming Zi Hong, Hyun Suk Lee, Keon Kim

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New proton exchange membranes were prepared and evaluated as polymer electrolytes for a proton exchange membrane fuel cell (PEMFC). Two types of fluorinated poly(arylene ether)s (FPAEs) were synthesized by nucleophilic aromatic substitution of decafluorobiphenyl (DFBP) with 4,4′-(hexafluoroisopropylidene)diphenol (HFDP) and bisphenol-A (BPA). The FPAEs so prepared were converted into proton exchange polymers by sulfonation with fuming sulfuric acid (30% SO3). The FPAEs and sulfonated-fluorinated poly(arylene ether)s (S-FPAEs) with various sulfonation levels were characterized using 1H NMR, thermogravimetric analysis (TGA) and back titration, and then successfully evaluated as proton exchange membranes (PEM) with unit cell operation. power output measurements of S-DFBP-HFDP carried out at a cell temperature of 80°C. They exhibited a maximum power density of 425.5 mW/cm2 at 1150 mA/cm2.

Original languageEnglish
Pages (from-to)2315-2323
Number of pages9
JournalElectrochimica Acta
Issue number14
Publication statusPublished - 2004 Jun 15



  • Fluorinated
  • PEM
  • Poly(arylene ether)
  • Sulfonation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

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