MnO_2-r-GO修饰阴极对沉积型微生物燃料电池(MFC)产电性能的影响

Effect of MnO_2-r-GO modified cathode on the electricity generation performance of SMFC

考察了MnO2-石墨烯(r-GO)修饰阴极对沉积型微生物燃料电池(SMFC)的产电性能和体系有机质去除率的影响.实验结果表明,采用MnO2和r-GO对SMFC阴极进行复合修饰,运行稳定后,MnO2-r-GO修饰阴极体系与空白阴极体系相比,最高产电电压从65.2 mV增大到325.7 mV;最大功率密度由0.28 mW.m-2增大到17.4 mW.m-2,并且体系的内阻由1157Ω显著降低到159Ω;空白阴极体系和MnO2-r-GO修饰阴极体系的COD去除率和氨氮(NH4+-N)去除率分别由25.8%和27.3%增大到37.0%和32.7%.

Effects of manganese dioxide-reduced graphene oxide （ MnO2-r-GO） modified cathode on the electricity generation performance and organic matter removal efficiency of SMFC have been investigated in this paper. Experimental results were as follows ： Compared with the SMFC with blank cathode, the highest voltage of the SMFC with MnO2-r-GO modified cathode increased from 65.2 mV to 325.7 mV;The maximum output power density was elevated from 0.28 mW-m-2 to 17.4 mW.m-2 and its corresponding internal resistance decreased from 1157 Ω to 159 Ω after modified by MnO2 and r-GO; Moreover, COD and ammonia nitrogen （NH4＋ -N） removal effieiencies increased from 25.8% and 27.3% to 37.0% and 32.7% , respectively.