# US 9,040,015 B2 · 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

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- Number: US 9,040,015 B2
- Document ID: US9040015B2
- Status: Granted
- Kind: B2
- Application number: 13/796,214
- Filed: 2013-03-12
- Published: 2014-07-10
- Granted: 2015-05-26
- Earliest claimed: 2013-01-08
- Assignees: Korea Institute of Science and Technology
- Applicants: Korea Institute of Science and Technology
- Inventors: Munju Goh; Ok-kyung Park; Yong Mun Choi; Bon-Cheol Ku; Joong Hee Lee; Nam Ho You; Han Sol You
- Web page: https://patentgrep.com/patent/US9040015B2

## CPC

- C01B 32/168: After-treatment
- C01B 32/194: After-treatment
- H01B 1/04: mainly consisting of carbon-silicon compounds, carbon or silicon
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})

## Abstract

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.

## Claims

### Claim 1

A method for post-treatment of a carbonaceous material using dehydrocyclization, the method comprising the steps of:
reducing an oxidized carbonaceous material;
adding a dehydrocyclization-inducing catalyst selected from the group consisting of ferric chloride, copper, palladium, rhodium and combinations thereof to the reduced carbonaceous material; and
carrying out dehydrogenation on the surface of the carbonaceous material by the dehydrocyclization-inducing catalyst, while forming aryl-aryl bonds in the surface of the carbonaceous material.

### Claim 2 (depends on 1)

The method for post-treatment of a carbonaceous material using dehydrocyclization according to claim 1, wherein the oxidized carbonaceous material is reduced by heat treatment or chemical treatment in said reducing.

### Claim 3 (depends on 1)

The method for post-treatment of a carbonaceous material using dehydrocyclization according to claim 1, wherein the oxidized carbonaceous material is graphene oxide or oxidized carbon nanotube fibers.

### Claim 4 (depends on 1)

A carbonaceous material post-treated by the method as defined in claim 1.

### Claim 5 (depends on 4)

A polymer composite material comprising the carbonaceous material as defined in claim 4.

### Claim 6

A method for post-treatment of a carbonaceous material using dehydrocyclization, the method comprising the steps of:
reducing an oxidized carbonaceous material;
adding a ferric chloride dehydrocyclization-inducing catalyst to the reduced carbonaceous material; and
carrying out dehydrogenation on the surface of the carbonaceous material by the dehydrocyclization-inducing catalyst, while forming aryl-aryl bonds in the surface of the carbonaceous material.