Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7708427 | International Journal of Hydrogen Energy | 2018 | 8 Pages |
Abstract
Super-capacitor (SC) activated-carbon (AC) carbon-nanotubes (CNTs) (SC-AC-CNTs) is a kind of AC-based composite material and it combines the advantages of carbon nanotubes and activated carbon, including a series of peculiar properties such as low charge transmission resistance, super large specific area and excellent power characteristic. In this study, SC-AC-CNTs are first used to modify the carbon cloth (CC) anodes of microbial fuel cells (MFCs) and compared with that of SC-AC and CC. The measurements show that the specific surface area is increased from 219.519Â m2Â gâ1 to 283.643Â m2Â gâ1 after modification. The new anode is assembled in a urine-powered MFC (UMFC) to test its effectiveness. It is found that the amount of microorganisms attached on the new anode is much larger than that on the blank anode in UMFC. The maximum power densities of the UMFC assembled with SC-AC-CNTs and SC-AC modified anodes are 899.52Â mWÂ mâ2 and 555.10Â mWÂ mâ2, which are 2.9 and 1.8 times of that of the blank UMFC, respectively. The tests also shows that the UMFC with SC-AC-CNTs-modified anode creates a much longer duration of 105Â h at high-voltage plateau in a single cycle that is about 2-3 times of the other two groups. These findings demonstrate that these two double layer capacitor materials can effectively boost overall MFC performance.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Wenwen Chen, Zhongliang Liu, Junxian Hou, Yu Zhou, Xiaoge Lou, Yanxia Li,