Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Measurement of In-plane Gas Permeability of Gas Diffusion Layers in Proton Exchange Membrane Fuel Cells under Compressive Strain

고분자 전해질 연료전지 가스확산층의 압축상태 평면 기체투과율 측정

  • Oh, Changjun (Department of Unmanned System Engineering, Graduate School of Hannam University) ;
  • Lee, Yongtaek (Department of Mechanical Engineering, Hannam University)
  • 오창준 (한남대학교 대학원 무인시스템학과) ;
  • 이용택 (한남대학교 기계공학과)
  • Received : 2016.07.28
  • Accepted : 2016.08.23
  • Published : 2016.09.10
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Abstract

Gas diffusion layer (GDL) of PEMFCs plays a role that it diffuses the reactant gases to the catalyst layer on the membrane and discharge water from the catalyst layer to the channel. Physical parameters related to the mass transport of GDL are mostly from the uncompressed GDLs while actual GDLs in the assembled stacks are compressed. In this study, the relation of compression and strain of GDLs with various Polytetrafluoroethylene (PTFE) loading is measured experimentally and In-plane gas permeability is measured at the condition that the GDLs are in compressive strain. The gas permeability decreased with the loading of PTFE and the presentation of gas permeability under compressive stain is expected to improve the accuracy of modeling work of mass transport in the GDL.

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References

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