کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1289042 | 973283 | 2011 | 9 صفحه PDF | دانلود رایگان |

In this paper, a measurement cell for recording synchrotron X-ray images of low and high temperature PEM fuel cells is described. The experimental setup allows for recording of cross-sectional images, as well as for radiograms in through-plane direction, with limited signal degradation. First results on H3PO4 concentration and distribution as a function of the operating conditions are presented.This basic cell design is optimized for liquid water detection. To visualize water in an operating cell the energy of the synchrotron X-ray beam has been chosen in a range between 7 and 30 keV where high resolution images can be obtained. The cell design is described in detail, and references to results obtained with LT-PEMFC applications focusing on liquid water evolution are given. For HT-PEMFC applications, the method of synchrotron X-ray imaging can provide an insight on electrolyte concentration and distribution. These investigations show that significant information can be collected on electrolyte distribution and concentration as a function of operating parameters such as temperature, media utilization and humidification degree. First results for the dependence of electrolyte distribution on operating conditions are presented.
Journal: Journal of Power Sources - Volume 196, Issue 12, 15 June 2011, Pages 5231–5239