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High power enzymatic biofuel cell based on naphthoquinone-mediated oxidation of glucose by glucose oxidase in a carbon nanotube 3D matrix

2013; Royal Society of Chemistry; Volume: 15; Issue: 14 Linguagem: Inglês

10.1039/c3cp50767j

1463-9084

Bertrand Reuillard, Alan Le Goff, Charles Agnès, Michael Holzinger, Abdelkader Zebda, Chantal Gondran, Kamal Elouarzaki, Serge Cosnier,

Conducting polymers and applications

We report the design of a novel glucose/O2 biofuel cell (GBFC) integrating carbon nanotube-based 3D bioelectrodes and using naphthoquinone-mediated oxidation of glucose by glucose oxidase and direct oxygen reduction by laccase. The GBFCs exhibit high open circuit voltages of 0.76 V, high current densities of 4.47 mA cm−2, and maximum power output of 1.54 mW cm−2, 1.92 mW mL−1 and 2.67 mW g−1. The GBFC is able to constantly deliver 0.56 mW h cm−2 under discharge at 0.5 V, showing among the best in vitro performances for a GBFC. Using a charge pump, the GBFC finally powered a Light Emitting Diode (LED), demonstrating its ability to amplify micro watts to power mW-demanding electronic devices.