“三合一”微生物燃料电池的产电特性研究  

A membrane electrode assembly typed microbial fuel cell for electricity generation

作　　者：曹效鑫[1] 梁鹏[1] 黄霞[1] 

机构地区：[1]清华大学

出　　处：《环境科学学报》2006年第8期1252-1257,共6页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金项目(No.20577027)~~

摘　　要：为了降低内阻,尽可能提高微生物燃料电池的输出功率,提出了一种将阳极、质子交换膜和阴极热压在一起的＂三合一＂膜电极形式的微生物燃料电池,并考察了其在接种厌氧污泥条件下对乙酸自配水的产电特性.该＂三合一＂电池在稳定运行条件下电池内阻约为10～30Ω,远低于现已报道的其它形式的微生物燃料电池的内阻.目前该＂三合一＂型微生物燃料电池最大输出功率密度约300 mW·m^-2,库仑效率约50%.试验结果表明,在一个间歇运行周期中,电池内阻增加是引起输出电压降低的最主要原因.同时在不同的外阻条件下,需要降低极化的重点不同.In this research, in order to reduce the internal resistance and promote the energy output, a membrane electrode assembly （MEA） typed microbial fuel cell （MFC） was proposed. Electricity generation of the MFC by anaerobic sludge incubation was investigated with fed acetic acid containing wastewater. The MEA typed MFC has a relatively low internal resistance about 10 -30Ω during steady state. After a period of enrichment, the MFC generated electricity with a maximum power density of 300 mW·m^-2and columbic efficiency of 50%. It was found that the main cause of the drop of the voltage in a batch-feed cycle was the internal resistance increasing. Additionally, the pseudo-resistance composition and their dependency on different external resistance were discussed.

关 键 词：微生物燃料电池 三合一膜电极 内阻 极化 

分 类 号：X703[环境科学与工程—环境工程]