Abstract: The LiMn_1/3Ni_1/3Co_1/3O₂ of lithium-ion batteries cathode materials were prepared by molten salt synthesis method, in which KCl was molten salt, and the LiMn_1/3Ni_1/3Co_1/3O₂ has satisfactory electrochemical performance. Scanning Electron Eicroscope (SEM) shows that the product is in uniform and particles in even. XRD results demonstrate that the as-synthesized LiMn_1/3Ni_1/3Co_1/3O₂ is layered structure. The charge and discharge test results show the sample has a 3.6V plateau and higher reversible capacity. The LiMn_1/3Ni_1/3Co_1/3O₂ cathode synthesized at the temperature of 900℃. AA tape of lithium-ion batteries are made with good electrochemical performance. Its initial specific discharge capacity was 132.9mAh/g (2.75 ~4.2V, 1C rate) of better cycle stability. The discharge capacity was 124.6mAh/g after 50 cycles. The rate of discharge capacity was 93.75 %.