4. Conclusion
In summary, the Fe2O3/XC composite was prepared through a facile one step calcination in air. When employed as the catalyst in non-aqueous lithium-oxygen batteries, the Fe2O3/XC cathode exhibits a superior electrocatalytic activity for OER, with a considerably 0.43 V lower charge overpotential than that of the pure XC cathode. In addition, a considerable rate capability (with a charge voltage plateau of 3.99, 4.01 and 4.15 V at the current density of 100, 200 and 400 mA g1 , respectively) and much enhanced cyclic stability (up to 50 cycles) were obtained. The results demonstrate that the Fe2O3/carbon composite is a costeffective catalyst for non-aqueous lithium-oxygen batteries.