The Na0.6Li0.6[Mn0.72Ni0.18Co0.10]O-2 with well crystallized and high specific capacity is prepared by doping of Na and Li for Li and Na ion battery. The Na0.6Li0.6[Mn0.72Ni0.18Co0.10]O-2 composite is easily synthesized by molten-salt method. The effects of annealing temperature, time, Na contents, and electrochemical performance are investigated. In XRD analysis, the substitution of Na-ion resulted in the P2-Na2/3MO2 structure (Na0.70MO2.05), which co-exists in the Na0.6Li0.6[Mn0.72Ni0.18Co0.10]O-2 composites. The discharge capacities of cathode materials exhibited 284 mAh g(-1) for Li and 237 mAh g(-1) for Na ion battery with higher initial coulombic efficiency. (C) 2015 Elsevier B.V. All rights reserved.