Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Investigation of Gas Diffusion Layer Effects on the Freeze/Thaw Condition Durability in PEFCs

동결/해동 조건에서 기체확산층이 고분자전해질연료전지의 내구성에 미치는 영향에 관한 연구

  • Lim, Soo-Jin (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Park, Gu-Gon (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Park, Jin-Soo (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Sohn, Young-Jun (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Yim, Sung-Dae (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Yang, Tae-Hyun (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • Kim, Chang-Soo (Fuel Cell Research Center, Korea Institute of Energy Research)
  • 임수진 (한국에너지 기술연구원 연료전지연구단) ;
  • 박구곤 (한국에너지 기술연구원 연료전지연구단) ;
  • 박진수 (한국에너지 기술연구원 연료전지연구단) ;
  • 손영준 (한국에너지 기술연구원 연료전지연구단) ;
  • 임성대 (한국에너지 기술연구원 연료전지연구단) ;
  • 양태현 (한국에너지 기술연구원 연료전지연구단) ;
  • 김창수 (한국에너지 기술연구원 연료전지연구단)
  • Published : 2009.08.30
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Abstract

The effect 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, such as, 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 performance evaluations were conducted by using the single cells consisting of different GDLs. The performance degradation and the cell resistance increase could be directly correlated. The physical destruction of electrode was shown by SEM analysis. The mechanically supporting ability on the interface between the cell components can help enhancing the durability of PEFCs in the freeze/thaw condition.

Keywords

References

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