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Issue 15, 2013
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Membraneless glucose/O2 microfluidic enzymatic biofuel cell using pyrolyzed photoresist film electrodes

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Abstract

Biofuel cells typically yield lower power and are more difficult to fabricate than conventional fuel cells using inorganic catalysts. This work presents a glucose/O2 microfluidic biofuel cell (MBFC) featuring pyrolyzed photoresist film (PPF) electrodes made on silicon wafers using a rapid thermal process, and subsequently encapsulated by rapid prototyping techniques into a double-Y-shaped microchannel made entirely of plastic. A ferrocenium-based polyethyleneimine polymer linked to glucose oxidase (GOx/Fc-C6-LPEI) was used in the anode, while the cathode contained a mixture of laccase, anthracene-modified multi-walled carbon nanotubes, and tetrabutylammonium bromide-modified Nafion (MWCNTs/laccase/TBAB-Nafion). The cell performance was studied under different flow-rates, obtaining a maximum open circuit voltage of 0.54 ± 0.04 V and a maximum current density of 290 ± 28 μA cm−2 at room temperature under a flow rate of 70 μL min−1 representing a maximum power density of 64 ± 5 μW cm−2. Although there is room for improvement, this is the best performance reported to date for a bioelectrode-based microfluidic enzymatic biofuel cell, and its materials and fabrication are amenable to mass production.

Graphical abstract: Membraneless glucose/O2 microfluidic enzymatic biofuel cell using pyrolyzed photoresist film electrodes

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Supplementary files

Article information


Submitted
08 Mar 2013
Accepted
25 Apr 2013
First published
25 Apr 2013

Lab Chip, 2013,13, 2972-2979
Article type
Paper

Membraneless glucose/O2 microfluidic enzymatic biofuel cell using pyrolyzed photoresist film electrodes

M. J. González-Guerrero, J. P. Esquivel, D. Sánchez-Molas, P. Godignon, F. X. Muñoz, F. J. del Campo, F. Giroud, S. D. Minteer and N. Sabaté, Lab Chip, 2013, 13, 2972 DOI: 10.1039/C3LC50319D

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