Département de chimie moléculaire

We report the first example of an H2/O2 enzymic fuel cell able to power a wireless transmission system. Oxygen-tolerant hydrogenase from Aquifex aeolicus and bilirubin oxidase from Myrothecium verrucaria were incorporated from dild. solns. in carbon felt-based material, allowing mediatorless catalytic currents more than 1 mA to be reached. The enzymic fuel cell open circuit voltage was 1.12 V, and short circuit current was 767 $μ$A. It delivered a max. power of 410 $μ$W, sufficient to power the electronic device that measured in real time the anodic/cathodic compartments and room temps., the voltage of the capacitor and voltage output of the enzymic fuel cell itself. Notably, data were sent every 25 s during 7 h of continuous operation which constitute the highest performances ever reported for a realistic environmental application fully powered with an enzymic fuel cell. [on SciFinder(R)]