Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Characterization of PTFE Electrode Made by Bar-Coating Method Using Alcohol-Based Catalyst Slurry

알코올계 촉매 슬러리를 활용한 바 코팅으로 제조된 PTFE 전극의 형성 및 특성 조사

  • JUNG, HYEON SEUNG (Graduate Program of Energy Technology, School of Integrated Technology, Institute of Integrated Technology, Gwangju Institute of Science and Technology) ;
  • KIM, DO-HYUNG (Graduate Program of Energy Technology, School of Integrated Technology, Institute of Integrated Technology, Gwangju Institute of Science and Technology) ;
  • PAK, CHANHO (Graduate Program of Energy Technology, School of Integrated Technology, Institute of Integrated Technology, Gwangju Institute of Science and Technology)
  • 정현승 (광주과학기술원 융합기술원 융합기술학제학부 에너지프로그램) ;
  • 김도형 (광주과학기술원 융합기술원 융합기술학제학부 에너지프로그램) ;
  • 박찬호 (광주과학기술원 융합기술원 융합기술학제학부 에너지프로그램)
  • Received : 2020.03.27
  • Accepted : 2020.06.30
  • Published : 2020.06.30
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Abstract

Alcohol-based solvents including ethanol (EtOH) and tert-butyl alcohol (TBA) are investigated instead of isopropanol (IPA), which is a common solvent for polytetrafluoroethylene (PTFE), as an alternative solvent for preparing the catalyst slurry with PTFE binder. As a result, the performance at 0.2 A/㎠ from the single cells from using catalyst slurries based on EtOH and TBA showed very similar value to that from the slurry using IPA, which implies the EtOH and TBA can be used as a solvent for the catalyst slurry. It is also confirmed by the very close values of the total resistance of the membrane electrode assemblies from the slurries using different solvents. In the energy dispersive spectrometry (EDS) image, the shape of crack and dispersion of PTFE are changed according to the vapor pressure of the solvent.

Keywords

References

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