期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 21, 期 -, 页码 69-72出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.05.010
关键词
Microbial fuel cell; Biocathode; Graphene; Biofilm; Oxygen reduction
资金
- National Natural Science Foundation of China [21177030, 41101211]
- Natural Science Foundation of Guangdong Province, China [S2011010002452]
- Guangzhou City Science and Technology Project [11C64060740]
Here we reported a novel one-pot method for biocathode fabrication in microbial fuel cell (MFC), by which the microbially-reduced graphene was implanted into cathodic biofilm, leading to the in situ construction of graphene/biofilm composites with a three-dimensional structure. The maximum power density of the MFC with graphene-biocathode increased by 103% compared with the MFC with carbon cloth-biocathode. Electrochemical analyses showed that the graphene-biocathode had faster electron transfer kinetics and less internal resistance than the carbon cloth-biocathode. As an effective biocathode material, graphene/biofilm composites could enhance the electrocatalytic activity towards oxygen reduction, and facilitate the electron transfer between bacteria and electrode. (C) 2012 Elsevier B.V. All rights reserved.
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