Dynamic Analysis of Microbial Fuel Cell Electrochemical Model

Microbial Fuel Cell (MFC) is a device that can directly convert chemical energy into electrical energy. It has great potential in the field of environmental monitoring and new energy development. In this paper, the electrochemical model of MFC was established in the MATLAB environment. The dynamic analysis of the MFC system was carried out to study the effect of acetate feed concentration and current density on cell performance. When the acetate feed concentration changes the same value, the cell voltage will change differently under different current densities, the higher the current density, the more the voltage drop. In the case of different acetate feed concentrations, with the increase of current density, the rate of voltage drop obeys the rule: first increase, then decrease, and finally increase.

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