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Sewage Sludge-Derived Carbon-Doped Manganese as Efficient Cathode Catalysts in Microbial Fuel Cells

Sewage Sludge-Derived Carbon-Doped Manganese as Efficient Cathode Catalysts in Microbial Fuel Cells

Jingjing Huang, Huajun Feng, Yufeng Jia, Dongsheng Shen, Yingfeng Xu

Water Sci Technol. 2019 Oct;80(8):1399-1406.

PMID: 31961802

Abstract:

Searching for efficient and inexpensive catalysts to replace precious metal-based catalyst in air-cathode microbial fuel cells is crucial for the practical application and commercialization in wastewater treatment and energy generation. Here, through a simple pyrolysis process, sewage sludge could be converted into carbon material with hierarchically porous structure, which demonstrates oxygen reduction reaction (ORR) catalytic performance. Subsequently, co-doping Mn and N species on the carbonized sewage sludge matrix could further improve the ORR catalytic performance, which even demonstrates comparable performance to the commercial expensive Pt/C catalyst in air-cathode microbial fuels cells (MFC). The highest maximum power density of MFC with Mn-N/SC air-cathode is as high as 1,120 mW m-2, which is similar to the power density of the air-cathode MFC equipped commercialized Pt/C catalyst (1,240 mW m-2). Considering the simple operation, significant cost-saving and easy scale-up of the proposed 'trash-to-treasure' method, it is promising to convert harmful sewage sludge into efficient non-platinum cathode catalysts in microbial fuel cells.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42148	Metals in Sewage Sludge - PT			Price

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