Membraneless glucose/O-2 microfluidic enzymatic biofuel cell using pyrolyzed photoresist film electrodes

作者：Jose Gonzalez Guerrero Maria; Pablo Esquivel Juan; Sanchez Molas David; Godignon Philippe; Xavier Munoz Francesc; Javier del Campo F; Giroud Fabien; Minteer Shelley D; Sabate Neus

来源：Lab on a Chip, 2013, 13(15): 2972-2979.

DOI：10.1039/c3lc50319d

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.

• 出版日期2013