Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Water Repellent Coating of GDL with Different Concentration of Nano-sized PTFE Solution

나노사이즈 불화탄소수지 용액 농도에 따른 GDL 발수 코팅

  • Jeong, Moon-Gook (Grad. School of Applied Chemistry Engineering, Dankook Univ.) ;
  • Song, Ki-Se (Grad. School of Chemical & Biochemical Engineering, Dongguk Univ.) ;
  • Cho, Tae-Hwan (Grad. School of Applied Chemistry Engineering, Dankook Univ.) ;
  • Choi, Weon-Kyung (School of Engineering, Dankook Univ.)
  • 정문국 (단국대학교 응용화학공학과 대학원) ;
  • 송기세 (동국대학교 화공생물공학과 대학원) ;
  • 조태환 (단국대학교 응용화학공학과 대학원) ;
  • 최원경 (단국대학교 공학대학)
  • Published : 2009.08.30
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Abstract

Efficiency of a fuel cell is determined by the generated water. If water is not removed sufficiently, water will be accumulated at GDL, which causes flooding. Therefore, water control is regarded as a crucial factor to sustain fuel ell performance. In this study, PTFE coating on the surface of carbon paper was carried out to establish optimum process for hydrophobic treatment of GDL. Carbon paper was immersed at different concentrations of nano-sized PTFE coating solution. Their characteristics were analyzed systematically by FE-SEM, water contact angle, cyclic voltamogam, XRD and FT-IR. The quantitative correlation between the amount of coated-PTFE on a carbon paper and concentration of coating solution was carefully investigated. It is suggested that the amount of PTFE-coating on a carbon paper can be managed by means of controling concentration of coating solution.

Keywords

References

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