화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.21, No.12, 1314-1321, December, 2013
DOI10.1007/s13233-013-1183-6  Export Citation
Preparation of Nafion/Poly(ether(amino sulfone)) acid-base blend polymer electrolyte membranes and their application to DMFC
Seung-Eun Nam, Sunmi Park1, Won Choon Choi, Jae Wook Lee2, and Yongku Kang1, †
  • Green Chemistry & Engineering Research Division, Korea Research Institute of Chemical Technology, Daejeon, 305-600, Korea
  • 1Advanced Materials Division, Korea Research Institute of Chemical Technology, Daejeon, 305-600, Korea
  • 2Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 121-742, Korea
E-mail:
Nafion/poly(ether(amino sulfone)) (PEAS) acid-base blend polymer electrolyte membranes were prepared by the solution blend method that used a homogeneous mixing of Nafion and PEAS for a direct methanol fuel cell (DMFC). The dependence of the membrane proton conductivity, methanol permeability, and water-uptake properties on the extent of the substitution of PEAS and on the PEAS content were investigated. The increase in the amine groups of the PEAS and the contents of the PEAS in the blend membranes resulted in decreased water uptake and methanol permeability. Also, all the composite membranes showed the higher selectivity (the proton conductivity to methanol permeability ratio) than the Nafion membrane. The cross-linked Nafion/PEAS membrane showed significantly lowered methanol permeability, which could make them candidates for DMFCs. The performance of the DMFC with the Nafion/PEAS blend membranes was found to be higher than those using Nafion 115 membranes at high methanol concentrations.
Keywords:acid-base blend polymer electrolyte membranes;poly(ether(amino sulfone));proton conductivity;methanol permeability;direct methanol fuel cell
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