Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing carbon material-graphene composite material film

A composite material, graphene technology, applied in graphene, carbon compounds, chemical instruments and methods, etc., can solve problems such as difficulty in using alkali metal salts

Inactive Publication Date: 2018-04-27
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI +1
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, irreversible restacking or aggregation tends to occur between graphene sheets due to the large interlayer van der Waals attraction, making the use of alkali metal salts difficult.

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
  • Method for producing carbon material-graphene composite material film
  • Method for producing carbon material-graphene composite material film
  • Method for producing carbon material-graphene composite material film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] A. Preparation of carbon material-graphene composite material

[0048] figure 1 It is a schematic diagram of the preparation method of the carbon material-graphene composite material of the present invention. The method can include one or more steps that can be used in combination to prepare a multi-structure composite material that can be used in energy storage device applications.

Embodiment 1

[0068] (Preparation of activated carbon fiber)

[0069] Prepare air pre-oxidized fiber derived from polyacrylonitrile (PAN) (Institute of Coal Chemistry, Chinese Academy of Sciences, China), and saturated KOH solution (quality fiber :quality KOH =1:3) Mix and place in a vertical tube furnace. The resulting mixture was heated at a heating rate of 3°C / min to a maximum of 800°C, and then kept at this temperature for 1 hour under an argon atmosphere with a flow rate of 60 ml / min. After being naturally cooled to room temperature (approximately 15°C to 30°C), the obtained product was repeatedly washed with distilled water to remove impurities, and then dried at 100°C for 12 hours to obtain PAN-based activated carbon fiber (ACF).

Embodiment 2

[0071] (Preparation of Graphene Oxide)

[0072] The graphene oxide was prepared by a modified Hummers method (Hummers et al., J. Am. Chem. Soc., 1958, 80, 1339-1339), and then sonicated in deionized water (600W, 45 minutes) to obtain a concentration of 2.7 mg mL -1 Of graphene oxide (GO) hydrosol.

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
specific surface areaaaaaaaaaaa
thicknessaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for producing a carbon material-graphene composite material. The method comprises the following steps: obtaining a dispersion system containing a graphene oxide material and a carbon material which are dispersed in a liquid medium, evaporating the liquid medium to form a carbon material-graphene composite material precursor, and annealing the composite material precursor at 800-1200 DEG C in the presence of an inert gas to form the carbon material-graphene composite material. The graphene oxide material can be grafted graphene oxide. The invention also discloses the flexible carbon material-graphene composite material. The composite material can contain polyacrylonitrile (PAN)-based active carbon attached to a graphene layer, has a specific surface area being 1500-2250 m<2> / g, and has a micro-porous and meso-porous doublet porous structure.

Description

Technical field [0001] The present invention generally relates to a method for preparing an activated carbon material-graphene composite material, which may be in the form of a flexible material (for example, a film, a layer, a substrate, etc.). The activated carbon material may be derived from polyacrylonitrile (PAN)-based activated carbon. The composite material of the present invention can be used in a variety of applications (for example, catalysts for chemical reactions, energy storage and conversion, actuators, piezoelectric devices, sensors, smart textiles, flexible devices, electronic and optical devices, high-performance nanocomposites, etc. ). Background technique [0002] As sp 2 Two-dimensional crystal of conjugated carbon atoms, graphene has 2630m 2 A large specific surface area of ​​ / g and a corresponding specific capacitance of up to 263F / g to 526F / g. Graphene-based films can be used as flexible materials for various applications. However, due to the low bulk de...

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): C01B32/184H01M4/36H01M4/587
CPCH01M4/362H01M4/587C01P2004/03C01P2004/04C01P2002/72C01P2006/12H01G11/40C01P2006/16C01P2006/40C01B32/354C01B32/342C01B32/318C01B32/198H01G11/36H01G11/44H01M4/625H01M10/052H01M10/0525Y02E60/10C01B32/372C01P2002/70H01M4/583
Inventor 陈成猛孙国华刘云阳伊哈卜·N·乌达苏方远谢莉婧
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI