期刊
LAB ON A CHIP
卷 13, 期 15, 页码 2972-2979出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3lc50319d
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资金
- project MICROPLATE [CTQ-2009-0895]
- project BACTOTOX [CTQ2009-14390-C02-01]
- National Science Foundation [CHE-1057597]
- MICAELA [TEC2009-14660-C02-01]
- Spanish Ministry of Economy
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1057597] Funding Source: National Science Foundation
Biofuel cells typically yield lower power and are more difficult to fabricate than conventional fuel cells using inorganic catalysts. This work presents a glucose/O-2 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-C-6-LPEI) was used in the anode, while the cathode contained a mixture of laccase, anthracene-modified multiwalled 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 mu A cm(-2) at room temperature under a flow rate of 70 mu L min(-1) representing a maximum power density of 64 +/- 5 mW 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.
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