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http://dx.doi.org/10.5229/JKES.2006.9.2.089

Characterization of Nafion/Poly(ether(amino sulfone)) Acid-base Blend Polymer Electrolyte Membranes for Direct Dimethyl Ether Fuel Cell  

Park Sun-Mi (Advanced Materials Division, Korea Research Institute of Chemical Technology, New Chemistry Research Division, Korea Research Institute of Chemical Technology)
Choi Won-Choon (New Chemistry Research Division, Korea Research Institute of Chemical Technology)
Nam Seung-Eun (New Chemistry Research Division, Korea Research Institute of Chemical Technology)
Lee Kew-Ho (New Chemistry Research Division, Korea Research Institute of Chemical Technology)
Oh Se-Young (Dept. of Chem. Engineering, Sogang University)
Lee Chang-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Kang Yong-Ku (Advanced Materials Division, Korea Research Institute of Chemical Technology)
Publication Information
Journal of the Korean Electrochemical Society / v.9, no.2, 2006 , pp. 89-94 More about this Journal
Abstract
Nafion/poly(ether(amino sulfone)) acid-base blend polymer electrolyte membranes were prepared and their proton conductivity and dimethyl ether permeability were investigated. Characteristics of direct dimethyl ether fuel cell (DDMEFC) performance using prepared blend membrane were studied. The increase of amine groups in the base polymer in composite membranes resulted in the decrease in dimethyl ether permeability. The proton conductivity of the blend membranes gradually increased as increasing temperature. The conductivity of Nafion/PEAS-0.6 (85:15) blend membranes was measured to be $1.42\times10^{-2}S/cm\;at\;120^{\circ}C$ which was higher than that of the recast Nafion. The performance of direct dimethyl ether fuel cell (DDMEFC) using the Nafion/PEAS blend membranes was higher than that using $Nafion^(R)115$ membrane. Enhanced performance of direct dimethyl ether fuel cells using Nafion/PEAS blend membrane was explained by reducing dimethyl ether (DME) crossover through the electrolyte membrane and maintenance of the proton conductivity at high temperature.
Keywords
Poly(ether(amino sulfone)); Blend polymer electrolyte membranes; Proton conductivity; DME permeability; Direct dimethyl ether fuel cell;
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