Deposited RuO2–IrO2/Pt electrocatalyst for the regenerative fuel cell

A bifunctional RuO2–IrO2/Pt electrocatalyst for the unitized regenerative fuel cell (URFC) was synthesized by colloid deposition and characterized by analytical methods like TEM, XRD, etc. The result reveals that RuO2–IrO2 was well dispersed and deposited on the surface of Pt black. With deposited RuO2–IrO2/Pt as the catalyst of oxygen electrode, the performance of fuel cell/water electrolysis of unitized regenerative fuel cell (URFC) was studied in detail. URFC with deposited RuO2–IrO2/Pt shows better performance than that of URFC with mixed RuO2–IrO2/Pt catalyst. Cyclic performance of URFC with deposited RuO2–IrO2/Pt is very stable during 10 cyclic tests.