changes in carbon electrode morphology affect microbial fuel cell performance with shewanella oneidensis mr-1

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ID: 223570
2015
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Abstract
The formation of biofilm-electrodes is crucial for microbial fuel cell current production because optimal performance is often associated with thick biofilms. However, the influence of the electrode structure and morphology on biofilm formation is only beginning to be investigated. This study provides insight on how changing the electrode morphology affects current production of a pure culture of anode-respiring bacteria. Specifically, an analysis of the effects of carbon fiber electrodes with drastically different morphologies on biofilm formation and anode respiration by a pure culture (Shewanella oneidensis MR-1) were examined. Results showed that carbon nanofiber mats had ~10 fold higher current than plain carbon microfiber paper and that the increase was not due to an increase in electrode surface area, conductivity, or the size of the constituent material. Cyclic voltammograms reveal that electron transfer from the carbon nanofiber mats was biofilm-based suggesting that decreasing the diameter of the constituent carbon material from a few microns to a few hundred nanometers is beneficial for electricity production solely because the electrode surface creates a more relevant mesh for biofilm formation by Shewanella oneidensis MR-1.
Reference Key
sanchez2015energieschanges Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;David V. P. Sanchez;Daniel Jacobs;Kelvin Gregory;Jiyong Huang;Yushi Hu;Radisav Vidic;Minhee Yun
Journal acs combinatorial science
Year 2015
DOI
10.3390/en8031817
URL
http://www.mdpi.com/1996-1073/8/3/1817
Keywords Keywords not found

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