Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of graphene

A graphene and solvent technology, applied in the field of synthesis of inorganic chemical materials, can solve the problems of low cost, complex process conditions, and low yield, and achieve good reproducibility, mild reaction conditions, and simple process

Active Publication Date: 2012-01-18
TIANJIN UNIV
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the yield of graphene prepared based on the micromechanical exfoliation method is very low, and a small amount of exfoliation is doped with many multilayer graphite sheets
The biggest advantage of the chemical vapor deposition method is the formation of graphene on the conductive substrate, which provides the possibility for the next step in the application of electronics, but the process conditions are complex
The graphene oxide reduction method is a feasible method for large-scale synthesis of graphene. Although this method is simple and low-cost, it can produce a large amount of graphene, but because graphite oxide cannot be completely reduced, some physical problems are caused. , chemical and other performance loss

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of graphene
  • Preparation method of graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Put 20mL of diethylene glycol dimethyl ether in a 50mL round bottom flask, then add 0.04g of hexabromobenzene (equivalent to 2mg / mL) and 0.01g of CuBr (equivalent to 0.5mg / mL), stir, and After 30 minutes of pure Ar gas, the oil bath was heated at 140° C., and the reaction was carried out for 14 hours. The Ar gas atmosphere of the reaction system was maintained until the reaction system was naturally cooled to room temperature to obtain graphene. See figure 1 and figure 2 .

Embodiment 2

[0045] Put 20mL of toluene in a 50mL round bottom flask, then add 0.002g of hexabromobenzene (equivalent to 0.1mg / mL), 0.001g of CuCl (equivalent to 0.05mg / mL), stir, and heat in an oil bath under air conditions, the temperature is 100°C, reflux for 4 hours, and then naturally cool to room temperature to obtain graphene.

Embodiment 3

[0047] Put 20mL of diethylene glycol dimethyl ether in a 50mL round bottom flask, then add 1g of hexabromobenzene (equivalent to 50mg / mL), and 10g of Cu powder (equivalent to 500mg / mL) in a 50mL round bottom flask, stir , after passing Ar gas for 30 min, the oil bath was heated to 160° C., and the reaction time was 6 hours. The Ar gas atmosphere of the reaction system was kept until the reaction system was naturally cooled to room temperature to obtain graphene.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thermal conductivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of graphene, which comprises the following steps that: hexabromobenzene and substances A are added into solvents, are stirred into a mixed solution and are heated to take reaction for 2 to 48 hours at 100 to 200 DEG C, and a reaction system is oxygen-free or aerobic environment and the normal pressure or pressurized environment in the pressure aspect; the proportion of the hexabromobenzene to the substances A to the solvents is 0.1 to 50mg / 0.05 to 500mg / 1mL; the solvents are Bis(2-methoxy ethyl)ether, diphenyl ether, diethyl ether, tetrahydrofuran, toluene or benzene; the substances A are CuBr, CuI, CuCl, Cu or Ni. The preparation method has the advantages that the reaction condition is mild, the process is simple, and in addition, good reproducibility is realized. The prepared graphene is single-layer graphene. The graphene is used as chemical reaction raw materials, catalyst carriers and battery electrode materials and has wide application prospects in the aspects of physics and microtronics.

Description

technical field [0001] The invention relates to the synthesis of inorganic chemical materials, and relates to a preparation method of graphene. Background technique [0002] Graphene, as a new type of carbon material, is currently a hot research topic due to its large specific surface area and good electrical conductivity. The theoretical specific surface area of ​​graphene material is as high as 2600m 2 .g -1 , with outstanding thermal conductivity (3000W.m -1 .K -1 ), high conductivity (2×10 2 S.m -1 ). [0003] The synthesis of graphene generally has the following several methods. Micromechanical exfoliation method: Novoselov et al. 2004 [1] Single-layer graphene was successfully exfoliated from highly oriented pyrolytic graphite by micromechanical exfoliation. This is the first reported method to obtain graphene. Graphene oxide reduction method: Horiuchi et al. [2] The natural graphite was oxidized, followed by a series of purification, and then the graphite o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B82Y40/00
Inventor 秦学王丽刘厚彬
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com