Korea Institute of Science and Technology

Joong Hee Lee

Bon-Cheol Ku

Ok-kyung Park

Nam Ho You

Munju Goh

Sung Ho Lee

Jun Kyung Kim

Han Ik Jo

Seok In Na

Yong Mun Choi

Han Sol You

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&#xb0; 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.

Method of preparing reduced graphene oxide and reduced graphene oxide-polymer composites

Provided are a method for post-treatment of a carbonaceous material using dehydrocyclization, a carbonaceous material post-treated by the method, and a polymer composite material including the carbonaceous material. More particularly, provided are a method for post-treatment of a carbonaceous material using dehydrocyclization, including subjecting the carbonaceous material to dehydrocyclization at room temperature to heal structural defects in the carbonaceous material, while increasing the effective conjugated length of the carbonaceous material to improve the electrical conductivity thereof, as well as a carbonaceous material post-treated by the method and a polymer composite material including the carbonaceous material.

Post-treatment method of carbon materials for improving the electrical conductivity and mechanical properties via dehydrocyclization reaction and polymer composite materials comprising the treated carbon materials

The present disclosure relates to a polyimide-graphene composite material and a method for preparing same. More particularly, it relates to a polyimide-graphene composite material prepared by adding modified graphene and a basic catalyst during polymerization of a polyimide precursor so as to improve mechanical strength and electrical conductivity and enable imidization at low temperature and a method for preparing same.

Polyimide-graphene composite material and method for preparing same

Growing community of inventors

Jeollabuk-do, South Korea

Joong Hee Lee