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Preparation and Characterization of Polysulfone Substrate for Reinforced Composite Membrane Fuel Cell Membrane  

Nam, Sang-Yong (School of Materials Science and Engineering, Engineering Research Institute, i-Cube Center, Gyeongsang National University)
Kim, Deuk-Ju (School of Materials Science and Engineering, Engineering Research Institute, i-Cube Center, Gyeongsang National University)
Hwang, Rae-Young (School of Materials Science and Engineering, Engineering Research Institute, i-Cube Center, Gyeongsang National University)
Kim, Hyoung-Juhn (Fuel Cell Research Center, Korea Institute of Science and Technology)
Publication Information
Membrane Journal / v.19, no.1, 2009 , pp. 63-71 More about this Journal
Abstract
In this study, polysulfone which has excellent mechanical and thermal stability with low cost was used for preparing a non-conducting polymer matrix as a reinforced composite membrane for fuel cell application. The membranes were prepared by phase separation method. Polymer concentration and retention time were controlled to investigate the effects on the membrane morphology. The resaltant membranes showed all sponge-like structure independent of polymer concentration. The mechanical and thermal stability were improved with increasing polymer concentration in contrast to the membrane porosity. As a result, the membranes prepared with the retention time for 2 mins using 20 wt% of polymer solution was suitable for a fuel cell compositite membrane providing optimum properties such as approximately 80% of high porosity, 1.3 MPa of tensile strength, and less than 1% of thermal shrinkage both machine and transverse direction.
Keywords
reinforced membrane; fuel cell; membrane porosity; phase separation;
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Times Cited By KSCI : 2  (Citation Analysis)
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