کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1291102 973347 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of carbon loading in microporous layer on PEM fuel cell performance
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effect of carbon loading in microporous layer on PEM fuel cell performance
چکیده انگلیسی

The effect of carbon loading in the microporous layer on the PEM fuel cell performance was investigated using mercury porosimetry, electrochemical polarization techniques and electrochemical impedance spectroscopy. When air was used as an oxidant, a maximum fuel cell performance was obtained for a carbon loading of 0.5 mg cm−2. The ac-impedance properties were analyzed based on the thin film/flooded-agglomerate dynamics in the catalyst layer and the oxygen diffusion kinetics in the gas diffusion layer. The ac-impedance study indicated that the optimized microporous layer results in an effective water management (i.e. a balancing of water saturations in the catalyst layer and the gas diffusion layer), thereby improving the oxygen diffusion kinetics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 163, Issue 1, 7 December 2006, Pages 357–363
نویسندگان
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