کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7715864 | 1497458 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development and performance analysis of a metallic passive micro-direct methanol fuel cell for portable applications
ترجمه فارسی عنوان
تجزیه و تحلیل توسعه و عملکرد یک سلول سوختی منفعل فلزی میکرو مستقیم متانول برای کاربردهای قابل حمل
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Due to the growing interest on miniaturization for application on portable devices, the Micro Direct Methanol Fuel Cells (Micro-DMFC) proved to have great benefits. Passive fuel cells have extra advantages leading to less complex and cheaper systems. In the present work, an experimental study on the performance of a passive Micro-DMFC with an active area of 2.25Â cm2 working at ambient conditions is described. Several commercially available materials for Membrane Electrode Assembly (MEA) are tested including materials with low platinum content to achieve lower prices. The effect of methanol concentration on the cell performance is evaluated. The performance is compared with the one obtained using an active Micro-DMFC with the same active area. A optimized design is proposed corresponding to a maximum power density, 19.2Â mW/cm2, obtained using a Nafion 117 membrane, 3Â mg/cm2 Pt-Ru and 0.5Â mg/cm2 Pt as, respectively, anode and cathode catalyst loading, carbon paper as anode gas diffusion layer (GDL) and Sigracet carbon paper with micro porous layer (MPL) as cathode GDL at methanol feed concentration of 3Â M. This result higher than the optimal power obtained with the active Micro-DMFC clearly demonstrates that membranes with low catalyst content could be used in passive MicroDMFC with success. This is an important result bearing in mind the use of micro-DMFCs in portable applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 15, 27 April 2015, Pages 5408-5415
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 15, 27 April 2015, Pages 5408-5415
نویسندگان
D.S. Falcão, J.P. Pereira, C.M. Rangel, A.M.F.R. Pinto,