微生物燃料电池启动过程的电化学行为  

Electrochemical Behavior of Microbial Fuel Cell in a Start-up Phase

作　　者：殷瑶[1] 黄光团[1] 陈建文[1] 刘勇弟[1] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237

出　　处：《华东理工大学学报（自然科学版）》2014年第2期190-195,共6页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(51078144)

摘　　要：构建了以初沉池污水接种、铁氰化钾作为阴极液的典型H型无介体微生物燃料电池(MFC),考察了MFC在启动过程中的电化学行为。结果表明:在启动期间,MFC开路电压比闭路电压提前达到稳定,电池内阻的变化决定了MFC的启动过程。铁氰化钾阴极电位的变化幅度较小,阳极电位的降低幅度远大于阴极电位,启动过程电压的变化由阳极电位主导。启动中的电化学阻抗谱(EIS)分析表明,电池电荷转移内阻随着启动过程的进行呈现不断下降的趋势,反映了MFC阳极产电微生物的繁殖与驯化过程。The electrochemical behavior of a typical H-type mediatorless microbial fuel cell（MFC）, which was inoculated by the effluent of a primary sedimentation tank using potassium ferricyanide as catholyte,in the start-up phase was investigated.The results showed that the change of open circuit voltage proceeded the closed one in a start-up phase which revealed that the change of the internal resistance determined the start-up process.The reduction of potassium ferricyanide cathode potential was smaller than the anode potential,and the changes of MFC voltage was dominated by the anode.The analysis of electrochemical impedance spectroscopy（EIS）indicated that the charge transfer resistance reduced in the start-up phase,which reflected the reproduction and domestication of electricigens in MFC anode.

关 键 词：微生物燃料电池 启动 电压 电化学阻抗谱 阳极生物膜 

分 类 号：X703.1[环境科学与工程—环境工程]