Membraneless glucose/O<inf>2</inf> microfluidic enzymatic biofuel cell using pyrolyzed photoresist film electrodes

Maria José González-Guerrero, Juan Pablo Esquivel, David Sánchez-Molas, Philippe Godignon, Francesc Xavier Muñoz, F. Javier Del Campo, Fabien Giroud, Shelley D. Minteer, Neus Sabaté

    Research output: Contribution to journalArticleResearchpeer-review

    61 Citations (Scopus)


    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. © 2013 The Royal Society of Chemistry.
    Original languageEnglish
    Pages (from-to)2972-2979
    JournalLab on a Chip
    Issue number15
    Publication statusPublished - 7 Aug 2013


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