Enhanced performance of microbial fuel cells by using MnO2/Halloysite nanotubes to modify carbon cloth anodes
AffiliationUniv Arizona, Dept Aerosp & Mech Engn
KeywordsMicrobial fuel cell
Manganese oxide/Halloysite nanotube
MetadataShow full item record
PublisherPERGAMON-ELSEVIER SCIENCE LTD
CitationEnhanced performance of microbial fuel cells by using MnO2/Halloysite nanotubes to modify carbon cloth anodes 2016, 109:620 Energy
Rights© 2016 Elsevier Ltd. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractThe modification of anode materials is important to enhance the power generation of MFCs (microbial fuel cells). A novel and cost-effective modified anode that is fabricated by dispersing manganese dioxide (MnO2) and HNTs (Halloysite nanotubes) on carbon cloth to improve the MFCs' power production was reported. The results show that the MnO2/HNT anodes acquire more bacteria and provide greater kinetic activity and power density compared to the unmodified anode. Among all modified anodes, 75 wt% MnO2/HNT exhibits the highest electrochemical performance. The maximum power density is 767.3 mWm(-2), which 21.6 higher than the unmodified anode (631 mW/m(2)). Besides, CE (Coulombic efficiency) was improved 20.7, indicating that more chemical energy transformed to electricity. XRD (X-Ray powder diffraction) and FTIR (Fourier transform infrared spectroscopy) are used to characterize the structure and functional groups of the anode. CV (cyclic voltammetry) scans and SEM (scanning electron microscope) images demonstrate that the measured power density is associated with the attachment of bacteria, the microorganism morphology differed between the modified and the original anode. These findings demonstrate that MnO2/FINT nanocomposites can alter the characteristics of carbon cloth anodes to effectively modify the anode for practical MFC applications. (C) 2016 Elsevier Ltd. All rights reserved.
NoteAvailable online 28 May 2016. 24 Month Embargo.
VersionFinal accepted manuscript
SponsorsNational Natural Science Foundation of China [21106072, 51172107]; Research Fund for the Doctoral Program of Higher Education of China ; Key Projects in the National Science & Technology Pillar Program of China [2012BAE01B03]