Ryuhei Kishida,Dang Trang Nguyen,Kozo Taguchi,




Microbial fuel cell,Carbon sheet,Activated carbon sheet,Cyclic voltammetry,


Recently, the Microbial Fuel Cell (MFC) technology has captured the researcher’s attention for potentially solving the energy and environmental problems. In this work, we used cyclic voltammetry (CV) technique to evaluate carbon-based cathode electrode performance in MFC. Although activated carbon sheet (AC) has larger surface area than carbon sheet, experimental results showed that the MFC using carbon sheet for the cathode electrode generated higher power density than the case using AC. Based on the result of CV experiments, we formulate a hypothesis that the above result could be attributed to AC had absorbed more ferrocyanide in the cathodic chamber (ferricyanide turned into ferrocyanide by the oxidation reaction during MFC operation). This led to that the surface area of AC became smaller than that of carbon sheet, as a result, carbon sheet had outperformed AC in the role of the cathode in our MFC experiments.


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