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Characteristics of Coated Carbon Paper with PTFE Emulsion Have Different Particle Size  

Jeon, Hyeon (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.)
Song, Ki-Se (Grad. School of Chemical & Biochemical Engineering, Dongguk Univ.)
Jeong, Moon-Gook (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.)
Lee, Hye-Min (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.)
Cho, Tae-Hwan (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.)
Choi, Weon-Kyung (Grad. School of Applied Chemistry Engineering, Dankook Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.20, no.5, 2009 , pp. 424-431 More about this Journal
Abstract
Treatment for water repellency on the carbon supports of GDL which composed a part of MEA has been suggested as a solution to prevent flooding. PTFE is a fluoropolymer that has hydrophobic property and a PTFE emulsion was selected as waterproof agent in this investigation. Carbon paper was coated by PTFE emulsion with different particle size of 5~500 nm and 3~$5\;{\mu}m$ as various concentration. PTFE coated carbon paper has difference in weight variation changed proportionally at PTFE concentration and coating times. Then gas permeability of the coated carbon paper with emulsion of 3~$5\;{\mu}m$ PTFE was changed vastly. Characteristics of carbon paper coated with different PTFE emulsion were analyzed by FE-SEM, FT-IR spcetroscopy and were evaluated by weight variations, gas permeability and water contact angle.
Keywords
Carbon supports; Polytetrafluoroethylene(PTFE); Hydrophobic coating; Particle size; Gas permeability;
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Times Cited By KSCI : 3  (Citation Analysis)
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