| Title |
Measurement of In-plane Gas Permeability of Gas Diffusion Layers in Proton Exchange Membrane Fuel Cells under Compressive Strain |
| Authors |
Changjun Oh ; Yongtaek Lee |
| DOI |
http://dx.doi.org/10.6110/KJACR.2016.28.9.367 |
| Keywords |
고분자 전해질 연료전지 ; 가스확산층 ; 기체투과율 ; 압축 PEMFC ; Gas diffusion layer ; Gas permeability ; Compression |
| 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. |