摘要
In order to enhance the power output of microbial fuel cell as well as its stability, the development of a new type of anode is essential. The purpose of this work is to modify a stainless steel foam, using the layer-by-layer self-assembly technique, with rGO （reduced grapbene oxide） and PEI （polyethyleneimine）. The efficiency of this kind of modification has been investigated to determine the supply of graphene in term of electricity generation and stability. Under an applied voltage, which is used to form an electroactive biofilm, the modified stainless steel foam （SSF/（PE1/rGO）5） exhibited a current 50 times higher than the blank anode. The roughness of the SSF/（PEI/rGO）5 observed by SEM （scanning electron microscopy） is more favorable to attach more bacteria on it. Also, graphene improved the stability of the electrode as no response where observed for the blank anode after 18 days meanwhile the SSF/（PEI/rGO）5 was still running after 54 days.
