微生物燃料电池启动过程中的内阻及电容  

Internal Resistance and Capacitance of Microbial Fuel Cells during Start-up Period

作　　者：史海凤[1] 李冬梅[1] 刘勇弟[1] 蔡兰坤[1] 张乐华[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）》2012年第2期186-190,209,共6页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(20906026);上海市浦江人才计划(09PJ1402900);中央高校基本业务费(WB0914036);教育部留学回国人员启动基金(B200-C-0904)

摘　　要：利用交流阻抗法、极化曲线斜率法和功率密度峰值法研究微生物燃料电池(MFCs)在启动过程中内阻及电容的变化。结果表明:在MFCs启动过程中,交流阻抗法测得的总内阻和活化内阻逐渐变小,阳极电容逐渐增大,较好地反映了产电微生物繁殖以及驯化过程。极化曲线斜率法能够区分活化内阻、欧姆内阻与浓差内阻,但测量值波动较大。功率密度峰值法测得MFCs的内阻数据稳定,对选择MFCs的外接电阻有参考意义。The change of internal resistance and capacitance in microbial fuel cells（MFCs） was investigated by electrochemical impedance spectrosopy（EIS）,polarization slope and power density peak method during the start-up period.The results showed that the total resistance and activation resistance reduced while anodic capacitance increased during the start-up period of MFCs,which reflected well the reproduction and domestication of electricigens.Activation resistance,ohmic resistance and concentration resistance were able to be separated by the polarization slope method while the data were unstable.The volumetric power peak method obtained stable values of the MFCs＇ intermal resistance which has valuable reference for selecting external resistance in MFCs.

关 键 词：微生物燃料电池 交流阻抗 极化曲线 内阻 电容 

分 类 号：X703.1[环境科学与工程—环境工程]