کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1289042 973283 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measuring device for synchrotron X-ray imaging and first results of high temperature polymer electrolyte membrane fuel cells
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Measuring device for synchrotron X-ray imaging and first results of high temperature polymer electrolyte membrane fuel cells
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 196, Issue 12, 15 June 2011, Pages 5231–5239
نویسندگان
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