한국신재생에너지학회:학술대회논문집

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Property changes of GDLs and water behaviors in PEFCs

고분자전해질 연료전지 체결조건에서 기체확산층의 특성변화 및 물거동 확인

  • 박구곤 (한국에너지기술연구원 고분자연료전지연구단) ;
  • 임남윤 (한국에너지기술연구원 고분자연료전지연구단) ;
  • 안은진 (한국에너지기술연구원 고분자연료전지연구단) ;
  • 박진수 (한국에너지기술연구원 고분자연료전지연구단) ;
  • 윤영기 (한국에너지기술연구원 고분자연료전지연구단) ;
  • 이원용 (한국에너지기술연구원 고분자연료전지연구단) ;
  • 임태원 (한국에너지기술연구원 고분자연료전지연구단) ;
  • 김창수 (한국에너지기술연구원 고분자연료전지연구단)
  • Published : 2006.11.23
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Abstract

Proper water management is important to achieve high performance and durability of Polymer electrolyte fuel cell (PEFC). Among various stack components, gas diffusion layer (GDL) is considered as a core part to determine the gas and water transportation in a cell. To optimize the water management, the changes of properties as well as basic properties of GDLs were investigated before and after clamping of colls. Thickness, electric conductivity, porosity, hydroppobicity etc. were characterized by the same criteria. The amount of residual water after cell operation also was compared by direct measuring of weight. Based on the amount of residual water the endurance on the freeze condition was evaluated.

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