A poly(3

4-ethylenedioxythiophene)/multi-walled carbon nanotubes(PEDOT/MWCNTs)composite anode was prepared and used for modification of graphite rod via cyclic voltammetry

and applied in anaerobic fluidized bed microbial fuel cell(AFBMFC)to investigate its electricity generation performance.Field emission scanning electron microscopy(FESEM)was employed to characterize the surface morphology and cross-section structure of PEDOT/MWCNTs composite anode.The electrochemical behavior of the modified anodes with or without MWCNTs was studied by means of cyclic voltammetry(CV)and electrochemical impedance spectroscopy(EIS).The results showed that the performance of the composite anode was superior and its maximum output power density up to 217 mW穖-2

which was 30% higher than that of modified anode by PEDOT; The open circuit voltage was up to 837.8 mV.The COD removal rate reached 96.4% after MFC run 3 days.The results illustrated that the composite anode possessed good electricity generation performance and sewage treatment efficiency in the AFBMFC under the condition of mass transfer reinforcement depending on liquid-solid fluidized bed.In addition

the adding of carbon nanotubes improved the conductivity of composite anode and the state of microbial adhesion.