MANUFACTURING METHOD OF LITHIUM-TITANIUM COMPOSITE DOPED WITH DIFFERENT METAL, AND LITHIUM-TITANIUM COMPOSITE DOPED WITH DIFFERENT METAL MADE BY SAME

摘要

The present invention relates to a manufacturing method of a lithium-titanium composite oxide in which two different metals are doped, and a lithium-titanium composite oxide manufactured thereby in which two different metals are doped. More specifically, the present invention relates to a manufacturing method of a lithium-titanium composite oxide in which different metals are doped, thereby adjusting the content of impurities by mixing two different metals in a solid phase after adjusting the mixing ratio of the two different metals, grinding the mixture, and spray-drying the ground mixture, and to a lithium-titanium composite oxide manufactured thereby in which different metals are doped. By doping two different metals on the surface of a lithium-titanium composite oxide after adjusting the ratio of the two different metals to be appropriate, the present invention reduces the content of rutile type titanium dioxide, anatase type titanium dioxide, and Li2TiO3, which have been included as impurities in the prior art, thereby manufacturing titanium dioxide having excellent capacity characteristics and structural characteristics. In addition, a battery comprising such titanium dioxide exhibits excellent battery characteristics in which the early charge/discharge efficiency and the rate capability are high.