| abstract |
A method of preparing a lithium-nickel-manganese-cobalt composite oxide used as a positive electrode material for a lithium ion battery, comprising first and second steps of sintering a mixture comprising a lithium compound and nickel-manganese-cobalt hydroxide. As a method, the method further comprises adding a binder and / or binder solution after the first step sintering, wherein the mixture of the binder and / or binder solution and the first step sintering product is sintered in the second step sintering Characterized in that the method. The tap density and volume specific capacity of the cathode material lithium-nickel-manganese-cobalt composite oxide produced by the method of the present invention amount to 2.4 g / cm 3 and 416.4 mAh / cm 3 , respectively. In addition, the positive electrode material produced by the method of the present invention has the advantages of high specific capacity and excellent circulation safety. |