Synthesis method of lithium-titanium oxide using solid-state method
A method for synthesizing lithium-titanium oxide using a solid state method includes: mixing lithium oxide (Li 2 O) and titanium oxide (TiO 2 ) 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; and performing a heat treatment on the solid material.
1. A method for synthesizing a lithium-titanium oxide using a solid state method, comprising:
mixing lithium oxide (Li 2 O) and titanium oxide (TiO 2 ) 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; and
performing 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 Li 2 TiO 3 structure.
10. The method of claim 1 , wherein the solvent includes an alcohol.