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Citation: PENG Xinhong, YU Hongbing, WANG Xin. Effect of Nano Fe₃O₄ Content on the Performance in Microbial Fuel Cell[J]. Chinese Journal of Applied Chemistry, ;2013, 30(7): 808-814. doi: 10.3724/SP.J.1095.2013.30049 shu

Effect of Nano Fe₃O₄ Content on the Performance in Microbial Fuel Cell

College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China

Received Date: 21 January 2013
Revised Date: 21 February 2013

Composite anodes made of activated carbon powder/nano Fe₃O₄/stainless steel mesh(SSM) were fabricated with a mass percentage of 0,2.5%,5.0% and 7.5% of nano Fe₃O₄,and named as AcM,AcFeM1,AcFeM2 and AcFeM3,respectively. The SSM was used as both matrix and current collector. Effect of the nano Fe₃O₄ content on the performance of SSM was investigated in single-chamber membrane-less air cathode microbial fuel cell(MFC). The electrochemical behavior of each anode was studied by Tafel tests and charge-discharge experiments. The results indicate that the maximum power density and net capacitance charge increase from 664 mW/m² and 293.9 C(AcM) to 731 mW/m² and 300.4 C(AcFeM1),809 mW/m² and 388.5 C(AcFeM2),where nano Fe₃O₄ content is increased from 0 to 2.5% and 5.0%,respectively. With further increase in content of nano Fe₃O₄ to 7.5%,the performance of MFC inversely decreases. Thus,when the content of nano Fe₃O₄ is 5.0%,the best performance is reached for MFC. The electrochemical measurement also displays that the kinetic activity is the highest for AcFem2 anode with nano Fe₃O₄ content of 5.0%.
- microbial fuel cell,
- nano Fe₃O₄,
- power generation,
- transient storage
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Effect of Nano Fe₃O₄ Content on the Performance in Microbial Fuel Cell