TY - JOUR A1 - Markötter, H. A1 - Manke, I. A1 - Haußmann, J. A1 - Arlt, Tobias A1 - Klages, M. A1 - Krüger, P. A1 - Hartnig, C. A1 - Scholta, J. A1 - Müller, Bernd R. A1 - Riesemeier, Heinrich A1 - Banhart, J. T1 - Combined synchrotron X-ray radiography and tomography study of water transport in gas diffusion layers T2 - Micro & nano letters N2 - Synchrotron X-ray radiography and tomography investigations of a custom-made polymer electrolyte membrane fuel cell optimised for visualisation purposes are presented. The 3D water distribution and transport pathways in the porous carbon fibre gas diffusion layers (GDLs) were investigated. The authors found that water is not only moving from the GDL into the channel, but can also take the opposite way, that is, from the channel into free pore space of the GDL. Such movement of water into the opposite direction has been subject of speculations but has so far not yet been reported and might bring new insights into the general water transport behaviour, which might give new aspects to the general description of water transport processes and influence modelling assumptions to describe the process taking place in the GDL. PB - IET CY - London KW - Synchrotron radiography KW - Synchrotron tomography KW - Gas diffusion layers KW - Water transport PY - 2012 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/26282 AN - OPUS4-26282 SN - 1750-0443 VL - 7 IS - 7 SP - 689 EP - 692 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany