Biocell with fuel reservoir

A biocell with a biofuel reservoir, the biocell being intended to be brought into contact with a liquid medium, the liquid medium and with a fluid medium comprising an oxidizer, the biocell comprising a first electrochemical cell, the first electrochemical cell comprising:

• an anode made of a solid agglomerate comprising a conductive material mixed with a first enzyme capable of catalyzing the oxidation of the biofuel;
• a cathode made of a solid agglomerate comprising a conductive material mixed with a second enzyme capable of catalyzing the reduction of the oxidant, and
• a separating and porous membrane, electrically insulating, and permeable to the liquid medium, placed between the anode and the cathode,
• the biocell further comprising means for electrically switching on of the biofuel with an electric receiver, the means for switching in an electrical circuit allowing a current to flow from the cathode to the anode;
• the biocell comprises a means for storing the biofuel and for providing the liquid medium to the anode, the means comprising a hydrophilic porous material in contact with the anode and having a surface mass of 500 to 900 g/m2.