Bulletin of the Korean Chemical Society

  • 제29권4호
  • /
  • Pages.842-846
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  • 2008
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Methanol Barriers Derived from Layer-by-Layer Assembly of Poly(ethersulfone)s for High Performance Direct Methanol Fuel Cells

  • Ok, Jung-Lim (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Kim, Dong-Wook (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Lee, Chang-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Choi, Won-Choon (New Chemistry Research Division, Korea Research Institute of Chemical Technology) ;
  • Cho, Sung-Min (School of Chemical Engineering, Sungkyunkwan University) ;
  • Kang, Yong-Ku (Advanced Materials Division, Korea Research Institute of Chemical Technology)
  • 발행 : 2008.04.20
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초록

Layer-by-layer assembled multilayers of poly(ethersulfone)s were deposited on the surface of Nafion membrane for the application of direct methanol fuel cells (DMFC). Aminated poly(ethersulfone) (APES) and sulfonated poly(ethersulfone) (SPES) were used as a polycation and a polyanion for fabrication of the multilayer films. UV/Vis absorption spectroscopy verified a linear build-up of the multilayers of APES and SPES on the surface of Nafion. Thin multilayer films deposited on the Nafion membrane enabled methanol permeability of the membrane to decrease by 78% in comparison with the pristine Nafion. The performance of DMFCs in concentrated methanol was highly enhanced by using the multilayer modified Nafion.

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