Selective catalysts

Selective catalysts for oxidation reactions in low-temperature fuel cells

As stated above, a main problem related to FC application are the high potential excurses at the cathode during start-up and shut-down of the FC system. These potential excurses are caused by the so-called reverse current mode that is initiated by oxygen reduction reaction taking place at the anode. Hence, the development of catalysts that can oxidise the fuel with a high turn-over but that are not sensitive to oxygen reduction could enable a significant improvement of the overall stability of a fuel cell system. Therefore this research focusses on the application of different alloy catalysts for the oxidation reaction in low-temperature fuel cells. Structural investigation should help to identify the role of different alloying compounds to enhance the oxidation reaction but suppress the ORR.