期刊
APPLIED SURFACE SCIENCE
卷 427, 期 -, 页码 10-16出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.08.030
关键词
Microbial fuel cells; Porous carbon; Nitrogen doping; Anode; Biocompatibility
类别
资金
- National Natural Science foundation of China [21566025]
- Aeronautical Science Foundation of China [2015ZF56017]
- Science Fund of Jiangxi Province for Distinguished Young Scholars [20162BCB23044]
- Natural Science Foundation of Jiangxi Province [20152ACB21019]
The design and synthesis of low-cost and favourable anode materials is crucial to both power production efficiency and overall performance of microbial fuel cells (MFCs). Herein, we reported the preparation of three dimensional (3D) nitrogen-doped porous carbons (N/PCs) by one-step pyrolysis of solid mixture of sodium citrate and melamine. a variety of techniques, including electron microscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), etc., were applied to characterize the surface physicochemical properties of the products, featuring macroporous structure with rich nitrogen doping on the as-prepared N/PCs. When applied as anode materials of MFC, the N/PCs exhibits a maximum power density of 2777.7 mW m(-2), approximately twice higher than that of the MFCs with the commercial carbon cloth (CC) as anode. The significantly improved performance of the N/PCs was attributed to the unique structure and properties, such as favourable porous structure, good electrical conductivity, and large pore volume (0.7 cm(3) g(-1)) in the present N/PCs. Nitrogen dopant on the surface of porous carbon contributed to an increasing in biocompatibility, resulting in a suitable micro-environment for microbial growth and thus helps to decrease charge transfer resistance at the electrode interface. (C) 2017 Elsevier B.V. All rights reserved.
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