Synthesis method of lithium-titanium oxide using solid-state method

Patent metadata

Field	Value
Publication number	US-9896346-B2
Application number	US-201615079837-A
Country	US
Kind code	B2
Filing date	Mar 24, 2016
Priority date	Apr 14, 2015
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

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.

First claim

What is claimed is:

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.

Assignees

• Korea Basic Science Inst

Inventors

• Park Yi Hyun
• CHO Seungyon
• Ahn Mu Young
• Min Kyung Mi

Classifications

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01P2004/03

  obtained by SEM · CPC title

• C01G23/005 Primary

  Alkali titanates · CPC title

• G21B1/13

  First wall; Blanket; Divertor · CPC title

• Y02E30/128

  Cross-Sectional Technologies · mapped topic