PORTABLE DIRECT METHANOL FUEL CELL AND CORRESPONDING OPERATING METHOD

摘要

A known DMFC comprises at least one fuel cell unit consisting of a membrane electrode unit (MEA) and a methanol reservoir. According to the invention, structures and/or materials having a capillary action are provided in the anode region or instead of the anode region, said structures or materials excluding a dead volume. According to the corresponding operating method, the fuel cell unit is reoperated for a short period with a closed CO2 valve, after the fuel cell battery has been cut off, in such a way that the methanol/water mixture in the anode region is pushed back into the reservoir.