Spinel-type lithium titanium oxide/graphene composite and method of preparing the same
AssigneeIndustry-Academic Cooperation Foundation, Yonsei University
InventorsKwang Bum Kim, Hyun Kyung Kim, Ji Young Kim
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Abstract
A spinel-type lithium titanium oxide/graphene composite and a method of preparing the same are provided. The method can be useful in simplifying a manufacturing process and shortening a manufacturing time using microwave associated solvothermal reaction and post heat treatment, and the spinel-type lithium titanium oxide/graphene composite may have high electrochemical performances due to its excellent capacity and rate capability and long lifespan, and thus be used as an electrode material of the lithium secondary battery.
Claims14
A method of preparing a transition metal oxide/graphene composite comprising:
- (a) mixing a transition metal (M1) salt, water and a solution of graphite oxide dispersed in a polyol solvent;
- (b) preparing a transition metal (M1) oxide/graphene composite by applying microwaves to the mixed solution;
- and
- (c) preparing a transition metal (M1M2) oxide/graphene composite by applying microwaves to a solution obtained by mixing the transition metal (M1) oxide/graphene composite with a transition metal (M2) salt,
- wherein M1 and M2 are the same as or different from each other, and represent lithium, ruthenium, nickel, vanadium, cobalt, manganese, iron, or titanium.
Dependencies are inferred from the claim text.