Gas diffusion layer (GDL) 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 and new correlations for in-plane relative permeability of water and air are established. © 2010 Elsevier B.V. All rights reserved.
|Original language||English (US)|
|Number of pages||11|
|Journal||Journal of Power Sources|
|State||Published - Jun 2010|
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Funding for this work from ECEC industrial sponsor is gratefully acknowledged. I.S.H. also acknowledges King Abdullah University of Science and Technology (KAUST), Saudi Arabia for a fellowship award.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.