Zirconium phosphate sulfonated poly (fluorinated arylene ether)s composite membranes for PEMFCs at 100-140 °C

Myung Heui Woo, Ohdeok Kwon, Sung Ho Choi, Ming Zi Hong, Hyung Wook Ha, Keon Kim

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Organic-inorganic hybrid composite membranes have been prepared and evaluated for polymer electrolyte membrane fuel cells (PEMFCs) at 100-140 °C. A series of synthesized poly (fluorinated arylene ether)s was sulfonated by fuming sulfuric acid (20% SO3). The zirconium phosphate composite membrane was prepared by soaking the sulfonated poly (fluorinated arylene ether)s stepwise in 1 M zirconyl chloride solution and 1 M phosphoric acid solution. The chemical, thermal, and electrochemical properties of the composite membrane were investigated by thermogravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), and unit cell test. The cell performance of the zirconium phosphate sulfonated poly (fluorinated arylene ether)s composite membrane was superior to that of the starting membrane at intermediate temperature, 100-140 °C. And the cell performance with composite membrane indicated stable behavior during experimentation when operating temperature maintained at 120 °C, whereas sulfonated poly (fluorinated arylene ether)s membrane was irreversible degradation under the same condition.

Original languageEnglish
Pages (from-to)6051-6059
Number of pages9
JournalElectrochimica Acta
Volume51
Issue number27
DOIs
Publication statusPublished - 2006 Aug 25

Keywords

  • Composite membrane
  • Intermediate temperature
  • PEMFCs
  • Poly (fluorinated arylene ether)s
  • Zirconium phosphate

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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