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

doi:10.3724/SP.J.1095.2013.30049

Chinese Journal of Applied Chemistry

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

PENG Xinhong, YU Hongbing^*, WANG Xin

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

Received:2013-01-21 Revised:2013-02-18 Published:2013-07-10 Online:2013-07-10
Contact: Yu

Abstract

Abstract: 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%.

Key words: microbial fuel cell, nano Fe3O4, power generation, transient storage

CLC Number:

O646.5

PENG Xinhong, YU Hongbing*, WANG Xin. Effect of Nano Fe₃O₄ Content on the Performance in Microbial Fuel Cell[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.30049.

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

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