期刊
BIORESOURCE TECHNOLOGY
卷 342, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125932
关键词
Brush anode; Ferricyanide cathode; Nanoparticles; Ionic liquid polymer; Carbon nanotubes
资金
- US Department of Energy (DOE) Energy Efficiency and Renewable Energy (EERE) Fuel Cell Technologies Office
- National Renewable Energy Labo-ratory (NREL) [21263]
- Penn State University
Chemical treatments can improve the performance of flat anodes, but plain brush anodes achieved the highest power densities. Flat carbon cloth anodes modified with carbon nanotubes produced 3.2 times more power than the base material.
Anodes in microbial fuel cells (MFCs) can be chemically treated to improve performance but the impact of treatment on power generation has not been examined for different electrode base materials. Brush or flat anodes were chemically treated and then compared in identical two-chambered MFCs using the electrode potential slope (EPS) analysis to quantify the anode resistances. Flat carbon cloth anodes modified with carbon nanotubes (CNTs) produced 1.42 +/- 0.06 W m- 2, which was 3.2 times more power than the base material (0.44 +/- 0.00 W m- 2), but less than the 2.35 +/- 0.1 W m- 2 produced using plain graphite fiber brush anodes. An EPS analysis showed that there was a 90% decrease in the anode resistances of the CNT-treated carbon cloth and a 5% decrease of WO3 nanoparticle-treated brushes compared to unmodified controls. Certain chemical treatments can therefore improve performance of flat anodes, but plain brush anodes achieved the highest power densities.
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