Experimental Measurement of Relative Permeability Functions for Fuel Cell GDL Materials
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AbstractGas diffusion layer in PEM fuel cells plays a pivotal role in water management. Modeling of liquid water transport through the GDL relies on knowledge of relative permeability functions in the in-plane and through-plane directions. In the present work, air and water relative permeabilities are experimentally determined as functions of saturation for typical GDL materials such as Toray-060, -090, -120 carbon paper and E-Tek carbon cloth materials in their plain, untreated forms. Saturation is measured using an ex-situ gravimetric method. Absolute and relative permeability functions in the two directions of interest are presented. Significant departure from the generally assumed cubic function of saturation is observed. ©The Electrochemical Society.
CitationHussaini I, Wang C-Y (2009) Experimental Measurement of Relative Permeability Functions for Fuel Cell GDL Materials. ECS Transactions. Available: http://dx.doi.org/10.1149/1.3210710.
SponsorsFunding for this work from ECEC industrial sponsor is gratefully acknowledged. The firstauthor also acknowledges research and travel support from King Abdullah University ofScience and Technology (KAUST), Saudi Arabia.
PublisherThe Electrochemical Society