کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1291125 973347 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
PEM fuel cell open circuit voltage (OCV) in the temperature range of 23 °C to 120 °C
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
PEM fuel cell open circuit voltage (OCV) in the temperature range of 23 °C to 120 °C
چکیده انگلیسی

Open circuit voltages (OCVs) for a PEM fuel cell operating at 3.0 atm, 100% relative humidity and in the temperature range of 23–120 °C were measured. It was observed that the OCV decreased with increasing temperature. Analysis of the partial O2 and H2 pressures in the feed streams revealed that the decrease in partial pressures with temperature were largely responsible for the decrease in OCV. The difference between the theoretical and measured OCVs was analyzed based on the literature, calculations, and hydrogen crossover measurements at OCV. It was concluded that the difference in OCV is caused mainly by two factors, one is the mixed potential of the Pt/PtO catalyst surface, and the other is hydrogen crossover.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 163, Issue 1, 7 December 2006, Pages 532–537
نویسندگان
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