新型超级电容器材料修饰尿液微生物燃料电池阳极的研究

Supercapacitor Materials Modified Anodes for Enhancing Urine-powered Microbial Fuel Cell Performance

超级电容器活性炭(SC-AC)是一种新型高吸附活性炭,具有超大高比表面积,发达的中孔结构和高电容性质.在本文中,这种新型超级电容器材料被用于修饰尿液微生物燃料电池(Urine-powered Microbial Fuel Cell,UMFC)阳极碳布.比表面积测试结果显示SC-AC的修饰显著增加了阳极的比表面积.电化学阻抗谱表明SC-AC的修饰有效增大了阳极的导电率。高比表面积和高电容特性的协同作用使SC-AC修饰的阳极碳布(SC-AC/CC)表面的微生物附着量远大于空白碳布(CC).SC-AC/CC为阳极的UMFC的最大功率密度达到555.10 mW·m^(-2),是CC的1.8倍。研究结果表明,这种新型超级电容器材料可以用于修饰UMFC阳极且可有效地提升其整体性能.

Supercapacitor activated carbon （SC-AC） is a novel activated carbon material that has super large specific surface area, mesopore-rich structure and high capacitance. In this text, this supercapacitor material was used to modify carbon cloth anode to enhance the performance of urine-powered microbial fuel cell （UMFC）. The measurements showed that both the specific surface area and the electrical conductivity were increased significantly after modification. The synergistic reaction of high specific surface area and high capacitance made the number of microbes attached to carbon cloth modified with SC-AC （SC-AC/CC） was far larger that of the blank carbon cloth （CC）. The maximum power densities of the UMFC assembled SC-AC/CC anode was 555.10 mW.m-2 which was 1.8 times higher than that of the blank anode. These findings demonstrate that these novel super capacitor materials modified anode can be used in UMFCs, and effectively improve their performance.