کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4767454 | 1424129 | 2017 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Non-precious metal doped carbon nanofiber air-cathode for Microbial Fuel Cells application: Oxygen reduction reaction characterization and long-term validation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Although MFC systems have shown high potential as a renewable energy source and wastewater treatment technology, further progress is needed to improve current MFC performances. One of the current bottlenecks is to develop air-cathodes with high oxygen reduction reaction (ORR) performance, long-term stability and low material cost. In the present study, air-cathodes composed of carbon nanofibers (CNFs) doped with metals (Co, Ni or Fe) have been synthesized using electrospinning followed by a thermal treatment. Physical characterization shows homogeneously dispersed Co, Ni or Fe nanoparticles through the macroporous CNF matrix with high porosity and increased surface areas up to 573 m2 gâ1. The electrochemical abiotic characterization of the free-standing CNFs indicates that the presence of metal nanoparticles together with the increased values of mesoporosity improves the catalytic activity. Best results were obtained with Fe-doped CNFs. Up-scaling studies with a 1.5L MFC and using the free-standing Co-doped CNF sample (Co 2.5A) as air-cathode showed a long-term stability (t > 6000 h) and an enhanced performance (power densities up to 14.4 W mâ3 and 92 mW mâ2).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 228, 20 February 2017, Pages 380-388
Journal: Electrochimica Acta - Volume 228, 20 February 2017, Pages 380-388
نویسندگان
Pau Bosch-Jimenez, Sandra Martinez-Crespiera, David Amantia, Mónica Della Pirriera, Isabel Forns, Ronen Shechter, Eduard Borrà s,