Patent Number: 
Section: claims

1. A method for synthesizing a lithium-titanium oxide using a solid state method, comprising:mixing lithium oxide (Li2O) and titanium oxide (TiO2) in a solvent;separating a solid material which includes lithium oxide and titanium oxide from the solvent;drying the solid material separated from the solvent; andperforming a heat treatment on the solid material,wherein a molar ratio of lithium oxide to titanium oxide is 1:0.940 or more to less than 1:1. 2. The method of claim 1, wherein a molar ratio of lithium oxide to titanium oxide is in the range of 1:0.940 to 1:0.944. 3. The method of claim 2, wherein the titanium oxide has an anatase crystal structure. 4. The method of claim 1, wherein titanium oxide has a rutile crystal structure and a molar ratio of lithium oxide to titanium oxide is 1:0.942. 5. The method of claim 1, wherein the heat treatment is performed at 600° C. or more to less than 800° C. 6. The method of claim 1, wherein the heat treatment is performed at 670° C. or more to less than 800° C. 7. The method of claim 1, wherein the heat treatment is performed for 12 hours or more. 8. The method of claim 1, wherein the titanium oxide has an anatase crystal structure. 9. The method of claim 1, wherein lithium-titanium oxide prepared in the performing of the heat treatment has a Li2TiO3 structure. 10. The method of claim 1, wherein the solvent includes an alcohol.