正负极互换式小球藻光合微生物燃料电池性能  

Basic performance on electrode interchangeable photosynthetic microbial fuel cells with chlorella vulgaris

作　　者：郑胜[1] 钱院红[1] 邹杉杉 张立栋[2] 

机构地区：[1]东北电力大学化学工程学院,吉林吉林132012 [2]东北电力大学油页岩综合利用教育部工程研究中心,吉林吉林132012

出　　处：《电源技术》2016年第2期309-312,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(31101009)

摘　　要：交替利用小球藻的光合作用和呼吸作用,设计、搭建了正负极交替互换式微藻燃料电池模型,考察了该电池的启动时间,产电性能与燃料（还原糖）浓度、温度等影响因素的关系,最后探讨了该电池的产电机理。结果表明：电池构建成功并产电,启动电池时间大约400 min。运行过程中,还原糖浓度变化在4.38~6.0 g/L时,电压保持稳定。在45~50℃范围内,该电池表现出良好的工作性能,输出电压达到550 m V。电池经过多次正负极交换后,电压绝对值呈循环变化趋势。碳毡电极表面可见明显的小球藻生物膜,据此推测,生物膜上产生的电子通过电极直接经外电路传递到阴极,而阴极则如设计,小球藻光合作用产生的氧气接收电子。建议可提高小球藻在电极表面形成生物膜的速度来提高电池的性能。Using the photosynthesis and respiration of Chlorella vulgaris, a alternating positive and negative interchangeable algae fuel cell model was built. The relationship between the MFC start-up time,producing electrical performance and fuel（sugar） concentration,temperature and other influencing factors were investigated. Finally,the rationale of the battery capacity motor was discussed. The results show that the MFC is successfully constructed and electricity production. The start-up time was about 400 min. The voltage of MFC kept stable when the reducing suger concentration was in the 4.38~6.0 g/L. In the range of 45~50 ℃, the MFC exhibited good performance and the output voltage reached 550 m V. The absolute value of the voltage was cycling trends after several electrode exchange. Carbon felt electrode surface could be seen clearly C. vulgaris biofilms. From this phenomenon,the result of that electrons produced by the biofilm to the cathode electrode was passed directly through the external inferred circuit. Then the oxygen produced by C. vulgaris photosynthesis received electronics. It was suggested that improving the speed of biofilm formation on the electrode surface could be adopted to improve the MFC performance.

关 键 词：小球藻光合微生物燃料电池 还原糖浓度 正负极互换 循环电压 

分 类 号：TM911[电气工程—电力电子与电力传动]