Impedance and Thermodynamic Analysis of Bioanode, Abiotic Anode, and Riboflavin-Amended Anode in Microbial Fuel Cells

Title
Impedance and Thermodynamic Analysis of Bioanode, Abiotic Anode, and Riboflavin-Amended Anode in Microbial Fuel Cells
Author(s)
안영호Sokhee Jung[Sokhee Jung]Sang-Eun Oh[Sang-Eun Oh]Junho Lee[Junho Lee]Kyu Taek Cho[Kyu Taek Cho]Youngjin kim[Youngjin kim]Myeong Woon Kim[Myeong Woon Kim]Joonmok Shim[Joonmok Shim]Moonsung Kang[Moonsung Kang]
Keywords
EXTRACELLULAR ELECTRON-TRANSFER; BACTERIAL COMMUNITIES; POLARIZATION BEHAVIOR; SPECTROSCOPY; RESISTANCE; FLAVINS; ENERGY
Issue Date
201210
Publisher
KOREAN CHEMICAL SOC
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.10, pp.3349 - 3354
Abstract
Understanding exoelectrogenic reactions of the bioanode is limited due to its complexity and the absence of analytics. Impedance and thermodynamics of bioanode, abiotic anode, and riboflavin-amended anode were evaluated. Activation overpotential of the bioanode was negligible compared with that of the abiotic anode. Impedance spectroscopy shows that the bioanode had much lower charge transfer resistance and higher capacitance than the abiotic anode in low frequency reaction. In high frequency reaction, the impedance parameters, however, were relatively similar between the bioanode and the abiotic anode. At open-circuit impedance spectroscopy, a high frequency arc was not detected in the abiotic anode in Nyquist plot. Addition of riboflavin induced a phase angle shift and created curvature in high-frequency arc of the abiotic anode, and it also drastically changed impedance spectra of the bioanode.
URI
http://hdl.handle.net/YU.REPOSITORY/27150http://dx.doi.org/10.5012/bkcs.2012.33.10.3349
ISSN
0253-2964
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공과대학 > 건설시스템공학과 > Articles
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