کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5432422 1508834 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly efficient nitrogen-doped carbide-derived carbon materials for oxygen reduction reaction in alkaline media
ترجمه فارسی عنوان
کربن مشتق شده از کاربید نیتروژن با دوام بالا برای واکنش اکسیژن کاهش در رسانه های قلیایی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی

In this work, a novel type of nitrogen-doped carbide-derived carbon (N-CDC) catalysts is synthesized and their activity toward the oxygen reduction reaction (ORR) is investigated. Two different methods of preparation of N-CDC materials are compared: chlorination of titanium carbonitride and pyrolysis in the presence of a nitrogen-containing compound (dicyandiamide) of pre-chlorinated titanium carbide. The obtained catalysts are tested for ORR activity in 0.1 M KOH solution using the rotating disk electrode method along with their stability during 1000 cycles and compared to a commercial Pt/C catalyst. The surface morphology is investigated using scanning electron microscopy and the bulk composition with energy dispersive X-ray spectroscopy. The surface composition of the catalyst materials is analyzed with X-ray photoelectron spectroscopy and the structure with X-ray diffraction and Raman spectroscopy. The porosity of N-CDC materials is described with N2 physisorption. The dicyandiamide-derived N-doped CDC material showed excellent electrocatalytic activity for ORR in alkaline media. This N-CDC catalyst could be considered as a promising cathode material in alkaline fuel cells.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 113, March 2017, Pages 159-169
نویسندگان
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