Rechargeable lithium–oxygen batteries have been considered as a promising energy storage technology because of their ultra-high theoretical energy densities which are comparable to gasoline.In order to improve the electrochemical properties of lithium–oxygen batteries (LOBs), especially the cycling performance, a high-effi-ciency cathode catalyst is the most important component. Hence, we aim to demonstrate that CuCr2O4@rGO (CCO@rGO)nanocomposites,which are synthesized using a facile hydrothermal method and followed by a series of calcination processes,are an effective cathode catalyst.The obtained CCO@rGO nanocomposites which served as the cathode catalyst of the LOBs exhibited an outstanding cycling performance for over 100 cycles with a fixed capacity of 1000 mAh g-1at a current density of 200 mA g-1. The enhanced properties were attributed to the synergistic effect between the high catalytic efficiency of the spinel-structured CCO nanoparticles, the high specific surface area,and high conductivity of the rGO.