High performance glucose/O2 biofuel cell: effect of utilizing purified laccase with anthracene-modified multi-walled carbon nanotubes

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Publication Type pre-print
School or College College of Science
Department Chemistry
Creator Minteer, Shelley D.
Other Author Minson, Michael; Meredith, Matthew T.; Shrier, Alexander; Giroud, Fabien; Hickey, David; Glatzhofer, Daniel T.
Title High performance glucose/O2 biofuel cell: effect of utilizing purified laccase with anthracene-modified multi-walled carbon nanotubes
Date 2012-01-01
Description Laccase, a blue multicopper oxidoreductase enzyme, is a robust enzyme that catalyzes the reduction of oxygen to water and has been shown previously to perform improved direct electron transfer in a biocathode when mixed with anthracene-modified multi-walled carbon nanotubes. Previous cathode construction used crude laccase enzyme isolated as a brown cell extract powder containing both active and inactive proteins. Purification of this enzyme, yielding a blue solution, resulted in greatly improved enzyme activity and removed insulating protein that competed for docking space in this cathodic system. Cyclic voltammetry of the purified biocathodes showed a background subtracted limiting current density of 1.84 (±0.05) mA/cm2 in a stationary air-saturated system. Galvanostatic and potentiostatic stability experiments show that the biocathode maintains up to 75% and 80% of the original voltage and current respectively over 24 hours of constant operation. Inclusion of the biocathode in a glucose/O2 biofuel cell using a mediated glucose oxidase (GOx) anode produced maximum current and power densities of 1.28 (±0.18) mA/cm2 and 281 (±50) μW/cm2 at 25◦C and 1.80 (±0.06) mA/cm2 and 381 (±33) μW/cm2 at 37◦C, respectively. Enzymatic efficiency of this glucose/O2 enzymatic fuel cell is among the highest reported for a glucose/O2 enzymatic fuel cell.
Type Text
Publisher Electrochemical Society
Volume 159
Issue 12
First Page G166
Last Page G170
Language eng
Bibliographic Citation Minson, M., Meredith, M. T., Shrier, A., Giroud, F., Hickey, D., Glatzhofer, D. T., & Minteer, S. D. (2012). High performance glucose/O2 biofuel cell: effect of utilizing purified laccase with anthracene-modified multi-walled carbon nanotubes. Journal of The Electrochemical Society, 159(12), G166-G70.
Rights Management © The Electrochemical Society, Inc. [2012]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in [insert bibliographic information here].
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Identifier uspace,18283
ARK ark:/87278/s6pr8dsm
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Reference URL https://collections.lib.utah.edu/ark:/87278/s6pr8dsm
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