کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10706227 | 1023382 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nitrogen-doped activated graphene/SWCNT hybrid for oxygen reduction reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Nitrogen-doped activated graphene/SWCNT hybrid for oxygen reduction reaction Nitrogen-doped activated graphene/SWCNT hybrid for oxygen reduction reaction](/preview/png/10706227.png)
چکیده انگلیسی
Pt-free catalyst towards oxygen reduction reaction (ORR) that is highly active, stable, and low-cost is highly desirable for commercialization of fuel cells but still remains unresolved. Here, we report a hybrid material of nitrogen-doped activated graphene/carbon nanotubes via a simple self-assembly of graphene and carbon nanotubes followed by KOH activation and high temperature annealing in NH3 for an efficient metal-free catalyst for ORR. The single-walled carbon nanotubes are well intercalated into nanoporous graphene layers, which lead to a high surface area and electrical conductivity of the hybrid. The nitrogen doping provides more reactive sites for ORR and significantly enhances the reaction properties. The hybrid structure exhibits excellent catalytic behavior with a four-electron pathway in alkaline media and better stability than the commercial Pt/C catalyst. This study opens a new direction for developing low-cost and highly efficient carbon-based ORR electrocatalysts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 16, Issue 9, September 2016, Pages 1242-1249
Journal: Current Applied Physics - Volume 16, Issue 9, September 2016, Pages 1242-1249
نویسندگان
Duy Tho Pham, Bing Li, Young Hee Lee,