کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1273124 | 1497608 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Demonstration of water management role of microporous layer by similarity model experiments Demonstration of water management role of microporous layer by similarity model experiments](/preview/png/1273124.png)
The water management role of a microporous layer (MPL) in a polymer electrolyte membrane fuel cell (PEMFC) is demonstrated experimentally by visualizing the drainage behaviors of a non-wetting fluid through multiple porous layers. An intermediate layer inserted between a fine layer and a coarse layer is observed to reduce the number of (the non-wetting fluid) breakthrough sites towards the coarse layer by merging many transport paths. Then, the reduced number of the breakthrough sites decreases the non-wetting fluid saturation in the coarse layer by minimizing capillary fingering process. These results clearly demonstrate the water management role of an MPL: An MPL reduces the liquid water breakthrough into a gas diffusion layer (GDL) by merging many paths from a catalyst layer (CL), and thereby reduces the liquid water saturation in the GDL.
Journal: International Journal of Hydrogen Energy - Volume 35, Issue 9, May 2010, Pages 4264–4269