Device and method for performing a biologically catalyzed electrochemical reaction

Device comprising:

• an anode compartment including a quantity of an anode fluid comprising an electrochemically oxidizable substrate and optional further compounds;
• a cathode compartment including a quantity of a cathode fluid comprising an electrochemically reducible substrate and optional further compounds;
• an anode at least partially in contact with the anode fluid in the anode compartment;
• and
• a cathode at least partially in contact with the cathode fluid in the cathode compartment, the anode and the cathode being electrically connected and a catalyst being present on a surface of the anode and the cathode for respective catalysis of an electrochemical conversion of the electrochemically oxidizable substrate via an electrochemical oxidation reaction and catalysis of the electrochemical conversion of the electrochemically reducible substrate via an electrochemical reduction reaction, the catalyst comprising electrochemically active micro-organisms on at least one of the anode or cathode, at least one of the anode or cathode comprising electrochemically active micro-organisms being adapted as a plurality of capacitive bioelectrode particles combined with a number of charge conductors, the capacitive bioelectrode particles comprising a first electrically conductive material with electrochemically active micro-organisms thereon, and wherein the number of charge conductors, of a second electrically conductive material, are incorporated in the electrical connection between the anode and cathode and wherein means are also provided for causing movement of the bioelectrode particles relative to the number of charge conductors such that electrical contact between bioelectrode particles and the number of charge conductors are regulateable, so that charging or discharging of bioelectrode particles is possible at the number of charge conductors.