The Influence of Mediator Concentration on the Performance of Microbial Fuel Cell

Yu Zhao; Xiao Bin Wang; Peng Li; Yan Ping Sun

doi:10.4028/www.scientific.net/AMR.512-515.1520

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 512-515The Influence of Mediator Concentration on the...

The Influence of Mediator Concentration on the Performance of Microbial Fuel Cell

Abstract:

Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), power density and anode potential are used to characterize the mediator microbial fuel cell at different methylene blue (MB) concentrations. At lower MB concentration between 9.98×10-3 mmol/L and 1.66×10-1 mmol/L, the increased power density is enabled by using high mediator concentrations. Higher peak power density of 159.6 mw/m2 is observed compared with the peak power density of 36.0 mw/m2. But MB at too high concentration is disadvantageous to the perform of MFC. At the MB concentration of 2.50×10-1 mmol/L, the peak power output is just 128.4 mw/m2, which is lower than 159.6 mw/m2 at MB concentration of 1.66×10-1 mmol/L.

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Periodical:

Advanced Materials Research (Volumes 512-515)

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1520-1524

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.512-515.1520

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Online since:

May 2012

Authors:

Yu Zhao, Xiao Bin Wang, Peng Li, Yan Ping Sun

Keywords:

Concentration, Mediator, Microbial Fuel Cell (MFC)

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