US 2016/0079594 A1 · MANUFACTURING METHOD OF LITHIUM-TITANIUM COMPOSITE OXIDE IN WHICH DIFFERENT METALS ARE DOPED, AND LITHIUM-TITANIUM COMPOSITE OXIDE MANUFACTURED THEREBY IN WHICH DIFFERENT METALS ARE DOPED

Abstract

Provided is a manufacturing method of a lithium-titanium composite oxide doped with different metals, solid-phase mixing after adjusting a mixing ratio of two kinds of different metals and pulverizing the same, and spray drying the same to adjust contents of impurities, and a lithium-titanium composite oxide doped with different metals manufactured therefrom. By doping two kinds of different metals on the surface of the lithium-titanium composite oxide after adjusting the ratio of the two different metals to be a desirable ratio, the contents of rutile-type titanium dioxide, anatase-type titanium dioxide and Li2TiO3 which have been included as impurities are reduced, thereby manufacturing titanium dioxide having excellent capacity characteristics and structural characteristics, and a battery including the titanium dioxide having excellent battery characteristics of high initial charge and discharge efficiency and rate capability.

Claims18

Dependent claims

A manufacturing method of a lithium-titanium composite oxide doped with different metals, comprising:

i) solid-phase stoichiometrically mixing a lithium-containing compound, a titanium oxide, a different metal M-containing compound, and a different metal A-containing compound;
ii) dispersing the solid-phase mixture of the i) in a solvent and wet-pulverizing the mixture to have particles having an average particle diameter of 0.3 μm to 0.8 μm to prepare a slurry;
iii) spray-drying the slurry to provide particles;
and
iv) firing the spray-dried particles to manufacture a lithium-titanium composite oxide doped with different metals represented by the following chemical formula:
Li4Ti5-(x+y)MxAyO12 [Chemical Formula]
(in the chemical formula, the M is selected from the group consisting of Zr, Mg, Al, Ni, Co, Mn, and Cu, the A is selected from the group consisting of Na, K, V, and B, 0.1≦x≦1.5, 0≦y≦1, x+y≦2, and 8≦x/y≦9).

4 more elements

Dependencies are inferred from the claim text.

Manufacturing method of lithium-titanium composite oxide in which different metals are doped, and lithium-titanium composite oxide manufactured thereby in which different metals are doped

Life of this patent

Manufacturing method of lithium-titanium composite oxide in which different metals are doped, and lithium-titanium composite oxide manufactured thereby in which different metals are doped

Life of this patent

Abstract

Claims18