کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6454899 1418818 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Iron-embedded nitrogen doped carbon frameworks as robust catalyst for oxygen reduction reaction in microbial fuel cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Iron-embedded nitrogen doped carbon frameworks as robust catalyst for oxygen reduction reaction in microbial fuel cells
چکیده انگلیسی


- 3D Fe-embedded N doped carbon framework catalyst for microbial fuel cells.
- Outstanding oxygen reduction reaction performance in a neutral pH solution.
- Operation time more than 250 h in a feed period.

A kind of 3D Fe-embedded N doped carbon framework catalyst is successfully developed and tested in the present work as a robust cathode catalyst for microbial fuel cells (MFCs). Due to the well-arranged mesopores, the high surface area, the interconnected conductive networks as well as the finely dispersed Fe-N active species, the as-prepared 3D Fe-N-C catalyst exhibits significantly enhanced ORR activity compared to commercial Pt/C. More precisely, the 3D Fe-N-C yields a more-positive half-wave potential of −0.08 V (vs. SCE) and remarkably stable limiting current of ∼6.2 mA cm−2. The 3D Fe-N-C shows also an excellent tolerance to methanol as well as remarkably long-term stability with more than 82.4% retention of its initial activity after 55.5 h operation. Based on the as-prepared 3D Fe-N-C as the air cathode catalyst, a stable microbial fuel cell (MFC) device is fabricated and tested, performing a maximum power density of 3118.9 mW m−2 at a high current density of 9980.8 mA m−2. More importantly, it is found that the Fe-N-C MAFC device could steadily operate for more than 250 h in a feed period, which is substantially longer than the Pt/C-MFC device.

A microbial fuel cell with high power density output is fabricated, using for air cathode a 3D Fe-embedded N doped carbon framework as Pt-free catalyst.365

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 202, March 2017, Pages 550-556
نویسندگان
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