کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
179932 | 459365 | 2011 | 4 صفحه PDF | دانلود رایگان |
The three-dimensional water distribution and water transport paths in the gas diffusion layer (GDL) and the adjacent micro-porous layer (MPL) of a polymer electrolyte membrane fuel cell (PEMFC) were analyzed during cell operation. The technique of quasi in-situ X-ray tomography was used for a 3D visualization of the water distribution and the structure of the GDL at different operating conditions. Based on findings from in-situ radiographic measurements water transport paths were detected and subsequently examined by tomography. The combination of these 2D and 3D techniques allows for a fully three-dimensionally resolved visualization of transport paths through the GDL.
► 3D study of water transport paths in a gas diffusion layer using synchrotron imaging.
► Use of radiography and tomography to access water distribution and dynamics.
► Combined measurement approach revealed preferred water transport paths.
► Correlation between structural features and water transport is demonstrated.
Journal: Electrochemistry Communications - Volume 13, Issue 9, September 2011, Pages 1001–1004