Journal
ELECTROCHIMICA ACTA
Volume 82, Issue -, Pages 175-178Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.01.112
Keywords
Biofuel cell; Carbon fabric; Carbon nanotube; Gas-diffusion cathode
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Funding
- Noguchi Institute
- Grants-in-Aid for Scientific Research [24710138] Funding Source: KAKEN
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A strip of carbon fabric (CF) electrode modified with multiwalled carbon nanotubes and subsequently fructose dehydrogenase (FDH) showed an oxidation current density of similar to 11 mA cm(-2) in stirred 200 mM fructose solution. Obtaining a sufficient dispersion of the nanotubes during its modification was found to be critical to ensure such a performance of the FDH anode. For use with this anode, a CF strip modified with ketjenblack (KB) and bilirubin oxidase (BOD) served as a gas-diffusion cathode for the reduction of O-2 from air at a current density of similar to 2 mA cm(-2.) The FDH-modified CF strip and the BOD-modified CF strip were stacked with an agarose film that retained an electrolyte solution and fuel (fructose) to construct a totally flexible sheet-shaped biofuel cell. This assembly allowed bending of 44 degrees without affecting the maximum output power density, 550 mu W cm(-2) obtained at 0.4 V. (C) 2012 Published by Elsevier Ltd.
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