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*
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    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
    Volume49
    Issue number14
    DOIs
    Publication statusPublished - 2004 Jun 15

    Bibliographical note

    Funding Information:
    This study was supported by KOSEF through the Research Center for Energy Conversion and Storage, Korea science and Engineering Foundation (KOSEF R01-2001-00045-0), ‘Center for Nanostructured Materials Technology’ under the ‘21st Century Frontier R & D Programs’ of the Ministry of Science and Technology, Korea and the Korea Electric Power Corporation.

    Keywords

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

    ASJC Scopus subject areas

    • General Chemical Engineering
    • Electrochemistry

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