| 摘要 |
The present invention relates to a positive electrode material using globular nickel cobalt manganese hydroxides for a non-aqueous lithium secondary battery. The globular nickel cobalt manganese hydroxides in which titanium dioxides in nano-size are uniformly included are manufactured by using a precipitation reaction in an aqueous phase. Therefore, a structure of the positive electrode material as a final product is prevented from being destroyed at high voltages. Battery life properties of the non-aqueous lithium secondary battery can be increased under a condition of high temperatures, high voltages, or many binders. According to the present invention, a mixture of the nickel cobalt manganese hydroxide and lithium carbonate is obtained; the mixture is left at 900-1100°C for 5-20 hours; and then globular nickel cobalt manganic acid lithium can be produced. The positive electrode material, produced as stated above, has high particle strength of 150 MPa or greater. Therefore, the positive electrode material can prevent quality of the lithium second battery from being deteriorated by a structure destruction at high voltages, and thus can enhance battery life properties of the lithium secondary battery. |
