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KMID : 0545120130230010036
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Journal of Microbiology and Biotechnology
2013 Volume.23 No. 1 p.36 ~ p.39
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Power Density Enhancement of Anion-Exchange Membrane-Installed Microbial Fuel Cell Under Bicarbonate-Buffered Cathode Condition
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Jingmei Piao
An Jun-Yeong
Phuc Thi Ha
Kim Tae-Young
Jang Jae-Kyung
Moon Hyun-Soo
Chang In-Seop
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Abstract
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We introduce a high-performance microbial fuel cell (MFC) that was operated using a 0.1M bicarbonate buffer as the cathodic electrolyte. The MFC had a 136.42 mW/m2 maximum power density under continuous feeding of 5 mM acetate as fuel. Results of the electrode potential measurements showed that the cathode potential of the bicarbonate-buffered condition was higher than the phosphate-buffered condition, although the phosphate condition had less interfacial resistance between the membrane and electrolyte. Therefore, we posit here that the increased power of the bicarbonate-buffered MFC may be caused by the higher cathode potential rather than by the interfacial membrane-electrolyte resistance.
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KEYWORD
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Microbial fuel cell (MFC), Anion exchange membrane (AEM), Electrochemical impedance spectrometry (EIS), Electrode potential
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