POSSIBILITY OF USING NiCo_2O_4 ALLOY AS CATALYST FOR FUEL ELECTRODE OF HYDRAZINE FUEL CELL

摘要

The use of fuel cells on a large scale is mainly limited by the high cost of catalysts. Elimination of platinum as catalyst would allow for wider commercial application of fuel cells. The paper presents a study of hydrazine electrooxidation on NiCo_2O_4. So, the work shows a possibility of use of NiCo_2O_4 alloys as catalysts for anode of hydrazine fuel cells. Researches were done in glass vessel on an electrode with NiCo_2O_4 alloy as a catalyst. An aqueous solution ofKOH was used as the electrolyte. Measurements were done with the use of potentiostat. Conducted measurements show that there is a possibility of electrooxidation of hydrazine with NiCo_2O_4 catalyst. In any case, the process of electrooxidation of hydrazine occurs. A current density of about 15-35 mA/cm~2 has been obtained for all concentrations of hydrazine and electrolyte. The current density is low, but the price of this catalyst is much lower than platinum. The using catalyst with 15 and 25% of Co provides obtained higher current density than using catalyst with 50 and 751 of Co. So, the work shows possibility to use NiCofi) alloy as catalysts for fuel electrode of hydrazine fuel cells.