Plasma modification on a Nafion membrane for direct methanol fuel cell applications |
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Authors: | Shingjiang Jessie Lue Te-Shun Shih Ta-Chin Wei |
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Affiliation: | (1) Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan, Taiwan;(2) Department of Chemical Engineering, Chung Yuan University, Taoyuan, Taiwan |
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Abstract: | This research focuses on Nafion modification using plasma techniques for direct methanol fuel cell applications. The results
indicated the both argon (Ar) and carbon tetrafluoride (CF4) plasma treatments modified the Nafion surface substantially without altering the bulk properties. The Nafion surface exposed
to CF4 plasma resulted in a more hydrophobic layer and an even lower MeOH permeability than the Ar-treated membrane. The plasma
operating conditions using CF4 were optimized by utilizing an experimental design. The minimum MeOH permeability was reduced by 74%. The conductivity was
1–2×10-3 S/cm throughout the entire experimental range. Suppressed MeOH permeability can be achieved while maintaining the proton
conductivity at a satisfactory level by adjusting the plasma operating conditions. |
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Keywords: | Plasma Modification Nafion Methanol Permeability Optimization Fuel Cell |
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