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US 7,988,941 B2Granted
Graphene sheet and method of preparing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-young Choi, Hyeon-Jin Shin, Seon-mi Yoon
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Abstract
An economical method of preparing a large-sized graphene sheet having a desired thickness includes forming a film, the film comprising a graphitizing catalyst; heat-treating a gaseous carbon source in the presence of the graphitizing catalyst to form graphene; and cooling the graphene to form a graphene sheet. A graphene sheet prepared according to the disclosed method is also described.
Claims12
A method of preparing a graphene sheet, the method comprising:
- depositing a film consisting of a graphitizing catalyst;
- wherein a width of the film is one millimeter or greater;
- heat-treating a gaseous carbon source in the presence of the graphitizing catalyst to form graphene, while maintaining the shape of the film;
- and
- cooling the graphene to form a graphene sheet, wherein a width and a length of the graphene sheet are each about 1 millimeter or greater.
2 more elements
Dependencies are inferred from the claim text.