The low-temperature fuel cell stack has at least two fuel cells with an anode (1), a cathode (2) and an electrolyte membrane (5) between them. The method involves transferring heat generated on the cathode side of a first fuel cell to the fuel in the anode...

Process for separation of a fraction of highly active catalyst particles from a mixture of different active catalyst particles by the steps: mixing of the catalyst mixture with a gas bubble forming agent, adsorption of the gas bubbles at least partially at...

The compact bio-reactor fuel cell system has a bio-reactor (16) arranged above a fuel cell (14) and a vertical structure with at least two levels. The system has a sedimentation system (15) and a drying system (13) underneath the bio-reactor and is of modu...

Catalyst layer comprises an ion-conducting polymer and pure or supported catalyst particles. Added inorganic solids are present, of size at least twice that of the catalyst particles, but less than the catalyst layer thickness. An Independent claim is incl...

A limiting device limits voltage, which a fuel cell can make available at maximum. A cell voltage (UBZ) supplied by a fuel cell is plotted in the drawing against current consumption (IBZ). If no limiting device is available, a terminal voltage amounts to U...

The contact creation device has a membrane electrode device to make contact with two counter-posed bent metal sheets, by applying even pressure. Two counter-posed metal sheets (B) fit either side of a membrane electrode device (4-6). A contact link (7) for...