The Electrochemical Society, ECS Transactions, 1(33), p. 1407-1412, 2010
DOI: 10.1149/1.3484632
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X-ray computed tomography was used to visualize the water configurations inside gas diffusion layers for various applied capillary pressures, corresponding to both water invasion and withdrawal. A specialized sample holder was developed to allow capillary pressure control on the small-scale samples required. Tests were performed on GDL specimens with and without hydrophobic treatments.