In situ formation of graphene layers on graphite surfaces for efficient anodes of microbial fuel cells

文献类型： 外文期刊

第一作者： Tang, Jiahuan

作者： Tang, Jiahuan;Chen, Shanshan;Yuan, Yong;Cai, Xixi;Zhou, Shungui

作者机构：

关键词： Microbial fuel cells;Electrochemical exfoliation;Graphene;Macroporous anodes;Graphite plate

期刊名称：BIOSENSORS & BIOELECTRONICS （ 影响因子：10.618； 五年影响因子：9.323 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Graphene can be used to improve the performance of the anode in a microbial fuel cell (MFC) due to its good biocompatibility, high electrical conductivity and large surface area. However, the chemical production and modification of the graphene on the anode are environmentally hazardous because of the use of various harmful chemicals. This study reports a novel method based on the electrochemical exfoliation of a graphite plate (GP) for the in situ formation of graphene layers on the surface of a graphite electrode. When the resultant graphene-layer-based graphite plate electrode (GL/GP) was used as an anode in an MFC, a maximum power density of 0.67 +/- 0.034 W/m(2) was achieved. This value corresponds to 1.72-, 1.56- and 1.26-times the maximum power densities of the original GP, exfoliated-graphenemodified GP (EG/GP) and chemically-reduced-graphene-modified GP (rGO/GP) anodes, respectively. Electrochemical measurements revealed that the high performance of the GL/GP anode was attributable to its macroporous structure, improved electron transfer and high electrochemical capacitance. The results demonstrated that the proposed method is a facile and environmentally friendly synthesis technique for the fabrication of high-performance graphene-based electrodes for use in microbial energy harvesting. (C) 2015 Elsevier B.V. All rights reserved.

分类号： Q

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