Korea University Research and Business Foundation

Other

Gi-hyeok Lee

Yong-mook Kang

Suwon Lee

Youngju Choi

Mi-ru Jo

Da-hye Song

The inventive concept discloses a cathode active material containing crystal water and a manganese-based metal oxide.

Cathode active material

The inventive concept discloses a method for preparing a cathode active material containing a lithium manganese oxide exhibiting a reversible phase transition, and exhibiting electrochemical characteristics of the lithium manganese oxide through the reversible phase transition including (A) synthesizing a sodium manganese oxide using a manganese precursor, and (B) reacting the sodium manganese oxide with a lithium precursor to synthesize the lithium manganese oxide, or including (C) directly synthesizing the lithium manganese oxide.

Method for preparing cathode active material

According to an embodiment of the present invention, a method for preparing a graphite-titanium oxide composite comprises (S1) a surface-modifying graphite with benzyl alcohol or a cellulose-based material using a sol-gel method, (S2) distributing the surface-modified graphite in a solvent, adding a titanium precursor to the solvent, and mixing the titanium precursor with the surface-modified graphite to obtain a graphite-titanium mixture, and (S3) thermally treating the graphite-titanium mixture to grow a titanium oxide on a surface of the graphite.

Growing community of inventors

Cheonan-si, South Korea

Gi-hyeok Lee