کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5149291 | 1497876 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of porous carbon felt as an aerobic biocathode support in terms of hydrogen peroxide
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Aerobic biocathodes provide a low-cost and sustainable substitute for expensive precious metal catalysts at the cathode of Microbial Fuel Cells (MFCs). However, the abiotic formation of peroxide, which is catalyzed by the porous carbon support at certain cathode potentials, may be detrimental to their activity. Two different carbon felt supports, one treated with nitric acid, the other untreated, were characterized electrochemically through a series of chronoamperometry (CA) experiments using a novel 4-electrode electrochemical setup, in order to determine the potential at which peroxide is initially formed. Peroxide was detected at a potential of â0.2 V (all potentials are against Ag/AgCl) for the untreated carbon felt electrode and at a potential of â0.05 V for the nitric acid treated carbon felt. Given these results, two half-cells poised at â0.2 and â0.1 V were setup in order to study biocathode formation. The half-cell poised at â0.2 V did not develop an aerobic biocathode, whereas the half-cell poised at â0.1 V developed an aerobic biocathode. This study shows that to develop aerobic biocathodes on carbon felt, cathode electrode potentials more positive than â0.2 V must be applied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 356, 15 July 2017, Pages 459-466
Journal: Journal of Power Sources - Volume 356, 15 July 2017, Pages 459-466
نویسندگان
Edward M. Milner, Keith Scott, Ian M. Head, Tom Curtis, Eileen Hao Yu,