Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 13, Issue 33, Pages 15016-15021Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cp21813a
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Funding
- Japan Science and Technology Agency (JST)
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We demonstrate the utility of hierarchical micro/nano structures of electrically conductive carbon composites as anodes for microbial fuel cells (MFCs). To construct the hierarchical structures, carbon nanotubes (CNTs) were directly grown on micro-porous graphite felts at high densities. Using the CNT-modified felts as anodes, power outputs from MFCs were increased similar to 7 fold compared to those with bare graphite-felt anodes. We also show that this power improvement is sustainable even in MFCs operated with naturally occurring microbial communities. These results suggest the wide utility of the hierarchical micro/nano structures of conductive carbon composites for bio-electrochemical processes.
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