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Fabrication of Nanomodified Anodes for Power Density Enhancement of Microbial Fuel Cells

TitleFabrication of Nanomodified Anodes for Power Density Enhancement of Microbial Fuel Cells
Publication TypeConference Paper
Year of Publication2009
AuthorsSchaller, R., Y. Fan, S. Xu, A. Fern, F. Chaplen, H. Liu, and J. Jiao
Conference NameMaterials for Renewable Energy at the Society and Technology Nexus (MRS Proceedings)
Date Published04/2009
Conference LocationSan Francisco, California
Keywordsenergy generation, nanoscale, nanostructure
Abstract

Microbial fuel cells (MFCs) use microorganisms to simultaneously break down organic materials and generate electricity. One of the greatest challenges in the practical application of MFCs is to sufficiently increase their power generation. Nanomodified graphite carbon anodes were prepared for use in MFCs to enhance the electron transport from the microbes to the electrode. Nanomodification to the anodes included growth of nanoparticles and multi-walled carbon nanotubes (MWCNTs). Nanoparticles of various metals, including Au, Ni, Pd, and Fe, were synthesized through thermal annealing and Fe catalyzed MWCNTs were synthesized through chemical vapor deposition. Power density was measured in MFCs for each type of nanomodified electrodes. Significant increase in power density was observed for the MFC with anodes decorated with MWCNTs (with 50-100nm diameters).

DOI10.1557/PROC-1170-R05-13