کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148244 | 1497386 | 2016 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nitrogen-doped carbon nanofiber catalyst for ORR in PEM fuel cell stack: Performance, durability and market application aspects
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
OPEXNCRMEATCOEOLCAPEXPGMGDLORROCVRRDEAPUDMFcBOLPEMFCRotating ring-disc electrode - دیود الکترود چرخانده شدهPEM fuel cell - سلول سوختی PEMPolymer electrolyte membrane fuel cell - سلول سوختی غشای الکترولیتی پلیمرPlatinum group metals - فلزات گروه پلاتینGas diffusion layer - لایه انتشار گازtotal cost of ownership - مجموع هزینهی مالکیتMembrane-electrode assembly - مونتاژ غشاء الکترودCapital Expenses - هزینه های سرمایهauxiliary power unit - واحد قدرت کمکیOxygen reduction reaction - واکنش کاهش اکسیژنopen circuit voltage - ولتاژ مدار بازEnd-of-life - پایان زندگیfuel cell - پیل سوختیdirect methanol fuel cell - پیل سوختی متانولی مستقیمCathode - کاتد Nitrogen-doped carbon - کربن doped نیتروژن
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A noble metal-free catalyst based on N-doped carbon nanofibers supported on graphite (N-CNF/Fe) was employed for the oxygen reduction at the cathode of a Nafion PEMFC with a commercial Pt/C anode. Obtained performance in pure H2 and O2 indicated the presence of significant mass-transport limitations when utilizing catalyst loading between 1 and 10 mg cmâ2. Strategies to reduce the limitations were explored by optimization of the cathode ionomer content, catalyst loading and application technique. Pore-formers (Li2CO3, (NH4)2CO3 and polystyrene microspheres) were utilized to improve the mass-transport within the layer. A maximum of 72 mW cmâ2 and 1400 A gâ1 or 300 W gâ1 at peak power was demonstrated. The catalyst was then applied to the cathode of a 10-cell fuel cell stack, and a 400-h durability test was conducted. The average cell voltage decay amounted to 162 μV hâ1. Finally, a market application analysis was conducted to illustrate the potential and challenges of replacing platinum as cathode catalyst. It was shown that even a near-complete elimination of the cathode catalyst cost by substitution of platinum with a carbon-based catalyst cannot produce a cost competitive product unless both the performance and the durability of the fuel cell with the new catalyst are very close to that of the state-of the art Pt-based system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 39, 19 October 2016, Pages 17616-17630
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 39, 19 October 2016, Pages 17616-17630
نویسندگان
Dmitry Bokach, Sander ten Hoopen, Navaneethan Muthuswamy, Marthe E.M. Buan, Magnus Rønning,