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Conventional microbial fuel cells (MFCs) consist of biological anodes and abiotic cathodes,which are half-biological fuel cells.The abiotic cathodes usually require a catalyst such as Pt to enhance power production,increasing the cost.In this paper,the performance of a biocathode MFC based on the biocatalysis of Ferro/Manganese-oxidizing bacteria was investigated.A scanning electron microscopy with an energy dispersive spectrometer (SEM-EDS) was used to characterize the cathode and analyze the element of cathode.Moreover,Ferro/Manganese-oxidizing bacteria were accounted in the area of biocathode.