کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7712423 | 1497422 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Water distribution in high temperature polymer electrolyte fuel cells
ترجمه فارسی عنوان
توزیع آب در سلول های سوختی الکترولیت پلیمر با درجه حرارت بالا
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کلمات کلیدی
سلول سوختی الکترولیت پلیمر با درجه حرارت بالا، حمل و نقل آب گاز متقاطع،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
In this work a high temperature polymer electrolyte fuel cell based on a phosphoric acid doped polybenzimidazole membrane is operated at 160 °C on dry air and dry hydrogen. The anodic stoichiometry was varied to resemble typical operation with pure hydrogen or reformate gas. At the outlet of the fuel cell liquid water was collected by condensers. The resulting amounts of liquid water from cathode and anode were computationally analyzed. The results yielded an effective diffusion coefficient of water vapor of Dâ2.7â
10â7Â m2Â sâ1, which is the average value for the cell based on the water partial pressures at the outlets. From the calculated water partial pressures at the anode and cathode it can be concluded that the concentration of phosphoric acid differs significantly within catalyst layer of the anode and cathode. Finally, the crossover of hydrogen and oxygen was shown to depend on the swelling of the membrane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 3, 21 January 2016, Pages 1837-1845
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 3, 21 January 2016, Pages 1837-1845
نویسندگان
Uwe Reimer, Jannik Ehlert, Holger JanÃen, Werner Lehnert,