Abstract:In this study, the PW12/rGO composite material were deposited on the surface of carbon cloth to obtain PW12/rGO modified anode, which was used to construct a single-chamber air microbial fuel cell (MFC). The Effect of PW12/rGO modified anode on electricity generation and perchlorate reduction performance in MFC was investigated. Based on the analysis of anode surface morphology and its electrochemical characteristics, the mechanism of PW12/rGO modified anode to improve the electricity generation performance of MFC was discussed. The results show that, by feeding a medium of ClO4- (700 mg.L-1), the maximum output voltage and the average removal rate of ClO4- of PW12/rGO modified anode MFC are 200.18 mV and 1.15 kg.m-3.d-1, which are 4.4 and 1.06 times compared to blank anode MFC, respectively. Scanning electron microscopy (SEM) show that microorganisms attached to the surface of PW12/rGO modified anode is more than that of blank anode; tafel curve, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) reveal that PW12/rGO modified anode enhances the exchange current density, CV electroactive area, and decreases charge transfer resistance. The anode electron yield and electron transfer rate are increased by PW12/rGO modified anode, thereby the electricity generation performance of MFC is improved.