Direktoxidationsbrennstoffzelle für den konvektionsfreien Transport des Brennstoffs und Verfahren zum Betreiben der Brennstoffzelle

(A1) Die vorliegende Erfindung betrifft eine Direktoxidationsbrennstoffzelle für den konvektionsfreien Transport mindestens eines Brennstoffs sowie ein Verfahren zum Betreiben der Direktoxidationsbrennstoffzelle. Das erfindungsgemäße Prinzip basiert hierbei auf einem Transport des fluidischen Brennstoffs vom Brennstoffreservoir zu einer Membran-Elektroden-Einheit, wobei der Transport durch eine Kapillarstruktur unter Ausnutzung von Kapillarkräften und eines Evaporationssoges erfolgt.

DE 102006030236 A1 UPAB: 20080220 NOVELTY - The fuel cell has a membrane (2) electrode unit with an anode and cathode, and provided with a fluid distribution structure and a fuel (16) reservoir. The fuel cell has the membrane-electrode unit, where the membrane-electrode unit has a capillary structure, which is connected to a fuel reservoir for the transport of the fuel by evaporation suction. The capillary structure has multiple capillaries, which are arranged parallel to each other. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for operating the direct-oxidation fuel cell. USE - Direct-oxidation fuel cell for a convection-free transport of fluidic fuels (Claimed). ADVANTAGE - The fuel cell has the membrane-electrode unit, where the membrane-electrode unit has a capillary structure, which is connected to a fuel reservoir for the transport of the fuel by evaporation suction, and hence ensures extended temperature range for working of fuel cell, convection-free transport, better performance data and a simpler system engineering, higher temperatures results improved methanol oxidation kinetics.