Département de chimie moléculaire

We report the design of a novel glucose/O2 biofuel cell (GBFC) integrating carbon nanotube-based 3D bioelectrodes and using naphthoquinone-mediated oxidn. of glucose by glucose oxidase and direct oxygen redn. by laccase. The GBFCs exhibit high open circuit voltages of 0.76 V, high current densities of 4.47 mA cm-2, and max. 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 microwatts to power mW-demanding electronic devices. [on SciFinder(R)]