A facile synthesis and electrochemical performance of Na0.6Li0.6 [Mn0.72Ni0.18Co0.10]O2 as cathode materials for Li and Na ion batteries

Abstract The Na 0.6 Li 0.6 [Mn 0.72 Ni 0.18 Co 0.10 ]O 2 with well crystallized and high specific capacity is prepared by doping of Na and Li for Li and Na ion battery. The Na 0.6 Li 0.6 [Mn 0.72 Ni 0.18 Co 0.10 ]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–Na 2/3 MO 2 structure (Na 0.70 MO 2.05 ), which co-exists in the Na 0.6 Li 0.6 [Mn 0.72 Ni 0.18 Co 0.10 ]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.