Method of preparing reduced graphene oxide and reduced graphene oxide-polymer composites
AssigneeKorea Institute of Science and Technology
InventorsBon-Cheol Ku, Ok-kyung Park, Sung Ho Lee, Seok In Na, Han Ik Jo, Jun Kyung Kim, Joong Hee Lee
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Abstract
Methods of preparing reduced graphene oxide and reduced graphene oxide-polymer composites. The methods include covalently binding a halogen-substituted aromatic compounds to a graphene oxide and heat treating the graphene oxide with the halogen-substituted aromatic compounds covalently bound thereto at a low temperature, for example, 450° C. or less. By using the methods, reduced graphene oxide and reduced graphene oxide-polymer composites that have high electrical conductivities (e.g., 30,000 S/m or more) may be obtained.
Claims13
A method of preparing a reduced graphene oxide (RGO), the method comprising:
- mixing a graphene oxide and a halogen-substituted aromatic compound;
- stirring the mixture to obtain a graphene oxide covalently bound to the halogen-substituted aromatic compounds compound;
- and
- heat treating the graphene oxide covalently bound to the halogen-substituted aromatic compound at a temperature in a range of 100 to 450° C. to prepare the RGO.
The method of dam 1, wherein the halogen-substituted aromatic is a compound represented by Formula 1:
- R—Ar-L <Formula 1>
- wherein R is H or a halogen atom, Ar is a substituted or unsubstituted C6-C14 aromatic ring, L is —OH, —COOH, —NH2, —N2+X−, or —NH—NH2, where X− is a monovalent counter anion, provided that when R is H, Ar is substituted with at least one halogen atom.
Dependencies are inferred from the claim text.