| Summary: | 碩士 === 長庚大學 === 化工與材料工程學系 === 100 === In this study, using sulfonated SEBS poly (styrene-b-ethylene-butylene-b-styrene) used in direct methanol fuel cell (DMFC) proton exchange membrane, and compared cross-linking agents (EG (Ethylene glycol), PVA (Polyvinyl alcohol), G (glycerol)) effect the DMFC performance. In this study we found that when the feed concentration of 1M methanol 60 ° C using PVA cross-linked (PVA-sSEBS) has the maximum power of 94.5 mW cm−2, higher than of Nafion® 117 performance 33.8%, and when the voltage is 0.3V operating current is also increased by 29.6%; the other hand, using a commercially available cross-linked by Silane to filled the thin film of porous Teflon (Polytetrafluoroethylene (PTFE)) apply in the DMFC, when the feed concentration with 1M methanol and 60C the maximum power is 79.5 mW cm−2 was better than Nafion®115 4.6%. In other hand, based on Kulikovsky model, to simulate the Nafion®117 and compare experimental data curves with the temperature was 60°C the error is 1%; the simulation attempts to simulate the other membranes, such as, sPPEK (Sulfonated poly (phthalazinone ether ketone)) 2M methanol and 80°C the experimental values and prediction errors of the maximum power was 3.6%, sPEEK (Sulfonated poly (ether, ether, ketone)) prediction error was 22.9%, the PTFE/si-sSEBS prediction error is 8.8%, so after modified simulation formula was more closer to the experimental data.
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