한국신재생에너지학회:학술대회논문집

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Effect of the gas diffusion layer on freeze/thaw durability in polymer electrolyte fuel cells

동결/해동 조건에서 기체확산층의 물성이 고분자전해질연료전지의 내구성에 미치는 영향

  • 박구곤 (한국에너지기술연구원 연료전지연구단) ;
  • 임수진 (한국에너지기술연구원 연료전지연구단) ;
  • 박진수 (한국에너지기술연구원 연료전지연구단) ;
  • 손영준 (한국에너지기술연구원 연료전지연구단) ;
  • 임성대 (한국에너지기술연구원 연료전지연구단) ;
  • 김창수 (한국에너지기술연구원 연료전지연구단) ;
  • 양태현 (한국에너지기술연구원 연료전지연구단)
  • Published : 2009.06.25
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Abstract

The effect of the kind of gas diffusion layers (GDLs) on the freeze/thaw condition durability in polymer electrolyte fuel cells (PEFCs) were investigated. For this purpose, three kinds of GDLs, i.e., felt, paper and cloth types with different basic properties have been first prepared, then the changes in the properties and performance of cells was observed during the freeze/thaw cycles ranging from -30 to 70 $^{\circ}C$. The single cells consisting of different GDLs were evaluated for performance. The performance degradation and the cell resistance increase could be directly correlated. The physical destruction of electrode was shown by SEM analysis. It was presented that mechanical supporting force of interface between materials can help enhancing the durability of PEFCs in the freeze/thaw condition.

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