Korean Membrane Journal

The Membrane Society of Korea (한국막학회)
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Preparation and Characterization of Poly(styrenesulfonic acid)-grafted Fluoropolymer Membrane for Direct Methanol Fuel Cell

  • Choi, Jae-Hak (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kang, Phil-Hyun (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Lim, Youn-Mook (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Sohn, Joon-Yong (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Shin, Jun-Hwa (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Jung, Chan-Hee (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Jeun, Joon-Pyo (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Nho, Young-Chang (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
  • Published : 2007.12.31
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Abstract

A proton exchange membrane was prepared by ${\gamma}-irradiation-induced$ grafting of styrene into poly(tetrafluoro-ethylene-co-perfluoropropyl vinyl ether) (PFA) and subsequent sulfonation reaction. The degree of grafting (DOG) increased with an increase in the absorbed dose. The prepared membranes showed high ion exchange capacity reaching 3.0 meq/g, which exceeded the performance of commercially available perfluorosulfonic acid membranes such as Nafion. The proton conductivity of PFA-g-PSSA membrane increased with the DOG and reached 0.17 S/cm for the highest sample at room temperature. The DMFC performance of the prepared membranes with 50% DOG was comparable to that of Nafion membrane.

Keywords

References

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