کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1293182 1498031 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stainless steel mesh coated with MnO2/carbon nanotube and polymethylphenyl siloxane as low-cost and high-performance microbial fuel cell cathode materials
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Stainless steel mesh coated with MnO2/carbon nanotube and polymethylphenyl siloxane as low-cost and high-performance microbial fuel cell cathode materials
چکیده انگلیسی

The use of inexpensive and high-performance cathode materials is important for constructing large-scale microbial fuel cells (MFCs) for wastewater treatment and bioelectricity production. We show that the air-breathing MFC with a MnO2 (68%)/CNT and polymethylphenyl siloxane (PMPS) coated-stainless steel mesh cathode delivers a maximum power density of 2676 mW m−2 (normalized to the cathode surface area) or 86 W m−3 (normalized to the anode chamber volume). The cathode performance is found to be highly replied on the percentage of MnO2 in the as-prepared MnO2/CNT nanocomposites, in which the birnessite-type MnO2 is uniformly formed on the exterior CNT surfaces, as revealed by the scanning electron microscopy (SEM) and X-ray diffraction (XRD) results. Furthermore, it is found that PMPS coated onto the mesh electrode offers the advantages of low cost, easy handling and low water loss and exhibits improved cathode performance as compared to polydimethyl siloxane (PDMS). These findings suggest that the cathode materials, MnO2/CNT and PMPS in MFCs can function well as the electrocatalysts and the water-repellent gas-diffusion layer, respectively.


► An air-breathing microbial fuel cell (MFC) with low-cost and high-performance cathode materials.
► MnO2 (68%)/CNT was used as the catalyst.
► Polymethylphenyl siloxane (PMPS) was used as the gas diffusion layer.
► The MFC delivered a maximum power density of 2657 mW m−2.
► The MFC power performance was replied on the percentage of MnO2 in the catalyst.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 201, 1 March 2012, Pages 136–141
نویسندگان
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