集电方式对填料型微生物燃料电池性能的影响  

Influence of Current Collecting Methods on Performance of Packing-type Microbial Fuel Cell

作　　者：李明[1,2] 邵林广 梁鹏[2,3] 袁璐璐[2,3] 黄霞[2,3] 

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065 [2]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084 [3]清华大学-威立雅环境集团先进环境技术联合研究中心,北京100084

出　　处：《中国给水排水》2013年第9期24-28,共5页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2011AA060907);清华大学自主科研计划项目(20121087920)

摘　　要：针对填料型微生物燃料电池(PMFC)集电不足的情况,利用钛网作为集电体,比较不同集电方式(外侧、内侧、双侧)下PMFC的产电性能,其最大功率密度分别为9、13、20 W/m3。PMFC分层放电的平均功率密度比并联放电的高5%～16%。进水流向(并流向上、错流、并流向下)对PMFC下层、中层、上层产电的影响不同,下层的产电性能随进水方式的变化最明显,而进水方式对上层与中层产电性能的影响较小,PMFC不同集电层产电的差异主要受进水基质浓度和压力的影响。Titanium mesh was used to collect current more effectively in packing-type microbial fu- el cell （ PMFC）, and the power productions of PMFCs with different current collecting methods （ outside, inside and two sides connection） were compared. The results showed that the maximum power densities of the three methods were 9 W/m3, 13 W/m3 and 20 W/m3 , respectively. Stratified operation obtained 5% to 16% higher average power density than parallel operation in the PMFC. Regarding the influence of water flow direction （up-flow, cross flow and down-flow）, the performance of the lower layer was signifi- cantly influenced, while those of the upper and middle layers showed much smaller change. The perform- ance difference of the layers in PMFCs was mainly caused by the substrate concentration and pressure be- tween the electrode and the mesh.

关 键 词：填料型微生物燃料电池 集电方式 阻力 

分 类 号：TM911.45[电气工程—电力电子与电力传动]