文献类型：期刊文献

英文题名：Electricity production and electrochemical impedance modeling of microbial fuel cells under static magnetic field

作者：Yin, Yao[1];Huang, Guangtuan[1];Tong, Yiran[1];Liu, Yongdi[1];Zhang, Lehua[1]

机构：[1]E China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：237

起止页码：58

外文期刊名：JOURNAL OF POWER SOURCES

收录：;EI(收录号：20131516184424);WOS:【SCI-EXPANDED(收录号:WOS:000321085700010)】；

基金：The authors wish to thank National Natural Science Foundation of China (51078144) for the financial support of this study.

语种：英文

外文关键词：Microbial fuel cell; Magnetic field; Power density; Electrochemical impendence spectroscopy; Charge transfer resistance

摘要：Two-chamber microbial fuel cells (MFCs) were exposed to static magnetic field (MF) of field strengths 0 mT, 100 mT, 200 mT, and 300 mT, and the electricity production of the MFCs under the influence of the MF was investigated using electrochemical methods. The results show that the start-up periods of MFCs in MF were shorter than that without. The MFC with a 100-mT MF needed the shortest time (7 days) to obtain a stable voltage output. The maximum power density of 1.56 W m(-2) was for a field strength of 200 mT, which was the best among the MFCs. The impact of the MF on the charge transfer resistances (R-ct) of the anode, cathode, and whole MFC was analyzed by electrochemical impedance spectroscopy (EIS). A new method was developed to extend the equivalent circuit (EC) model to the whole MFC by connecting the anode and cathode models in series. The simulated results show that anode Rct values are much higher compared than at the cathode. The cell and anode R-ct values were reduced by 56.6% and 57.2%, respectively, for the 200-mT MF. It was also found that there is an optimal intensity MF range for the microorganisms. (C) 2013 Elsevier B.V. All rights reserved.