Method for producing graphene in green and large-scale manner

A graphene and green technology, applied in the field of green large-scale production of graphene, can solve the problems of inability to produce high-quality graphene in a green scale, limit the industrial application process of graphene, destroy the complete structure of graphene, etc., and achieve the separation method Simple and easy, fast stripping efficiency, and the effect of preserving integrity

Inactive Publication Date: 2018-01-12
LANZHOU UNIVERSITY
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cutting carbon nanotubes has created a new method for the preparation of high-performance graphene, but there is still a long way to go for large-scale and low-cost cutting of carbon nanotubes to prepare graphene
[0008] In addition, the reduction of graphite oxide method can realize large-scale production of graphene, but there are a large number of oxidation defects in the prepared graphene, which seriously destroys the complete structure

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 graphene in green and large-scale manner
  • Method for producing graphene in green and large-scale manner
  • Method for producing graphene in green and large-scale manner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 A method for green-scale production of graphene includes the following steps:

[0047] ⑴ Prepare 300ml, 1M ammonium sulfate solution as electrolyte.

[0048] ⑵Put the anode material into the electrolytic cell filled with electrolyte and fix it with foam paper, and fix the cathode material in the foam paper.

[0049] (3) Insert the thin tube connected with the inert gas into the electrolyte and fix it on the foam paper.

[0050] ⑷Add a cooling device around the electrolyte to keep the temperature of the electrolyte at 5°C.

[0051] (5) Connect the anode and cathode of the DC power supply to the anode material and cathode material in the electrolytic cell, and the distance between the two electrodes is 1cm.

[0052] ⑹ Continuously pass inert gas protection at the anode material, turn on the power supply, and adjust the power supply voltage to 8V at the same time, start electrochemical intercalation and stripping.

[0053] ⑺ The electrochemically intercalated, peeled, and de...

Embodiment 2

[0056] Example 2 A method for green scale production of graphene, including the following steps:

[0057] ⑴ Prepare 300ml, 1M ammonium sulfate solution as electrolyte.

[0058] ⑵Put the anode material into the electrolytic cell filled with electrolyte and fix it with foam paper, and fix the cathode material in the foam paper.

[0059] (3) Insert the thin tube connected with the inert gas into the electrolyte and fix it on the foam paper.

[0060] ⑷Add a cooling device outside the electrolyte to keep the temperature of the electrolyte at 10°C.

[0061] (5) Connect the positive and negative electrodes of the DC power supply to the anode material and cathode material in the electrolytic cell, and the distance between the two electrodes is 5 cm.

[0062] ⑹ Continuously pass inert gas protection at the anode material, turn on the power supply, and adjust the power supply voltage to 20V at the same time, start electrochemical intercalation and stripping.

[0063] ⑺ The electrochemically interca...

Embodiment 3

[0066] Example 3 A method for green scale production of graphene, including the following steps:

[0067] ⑴ Prepare 300ml, 1M sodium hydroxide solution as electrolyte.

[0068] ⑵Put the anode material into the electrolytic cell filled with electrolyte and fix it with foam paper, and fix the cathode material in the foam paper.

[0069] (3) Insert the thin tube connected with the inert gas into the electrolyte and fix it on the foam paper.

[0070] ⑷Add a cooling device outside the electrolyte to keep the temperature of the electrolyte at 15°C.

[0071] (5) Connect the positive and negative electrodes of the DC power supply to the anode material and cathode material in the electrolytic cell, and the distance between the two electrodes is 2 cm.

[0072] ⑹ Pass inert gas protection at the anode material, turn on the power supply, and adjust the power supply voltage to 10V at the same time, start electrochemical intercalation and stripping.

[0073] ⑺ The electrochemically intercalated, peeled...

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

No PUM Login to view more

Abstract

The invention relates to a method for producing graphene in a green and large-scale manner. The method comprises the following steps of: (1) preparing 0.1-10M of electrolytic solution; (2) adding an anode material into an electrolytic tank containing the electrolytic solution, fixing by using foam paper, and fixing a cathode material at the middle of the foam paper; (3) inserting a thin pipe connected with insert gas into the electrolytic solution, and fixing on the foam paper; (4) adding cooling equipment at the periphery of the electrolytic solution to maintain the temperature of the electrolytic solution to 5-15 DEG C; (5) respectively connecting a positive electrode and a negative electrode of a direct-current power supply to the anode material and the cathode material in the electrolytic tank; (6) introducing the inert gas for protection at the anode material, turning on the power supply, simultaneously adjusting the voltage of the power supply to 8-20V, and starting electrochemical intercalation and peeling; (7) carrying out suction filtration and washing on intercalation graphene flakes after electrochemical intercalation, peeling and dropping, and after electrolyte ions arewashed off, carrying out ultrasonic treatment and centrifugation in a solvent to obtain graphene dispersing solution; and (8) carrying out vacuum filtration on the graphene dispersing solution, freezing and drying to obtain the graphene. The method is extremely low in cost and simple and environmental-friendly in process.

Description

Technical field [0001] The invention relates to the field of graphene production, in particular to a method for green-scale production of graphene. Background technique [0002] Graphene is a new type of ultra-high performance two-dimensional material developed in the past ten years. It consists of carbon atoms through sp 2 A single-layer honeycomb two-dimensional grid structure composed of hybrids. The thickness of graphene is only 0.334 nm, which is the thinnest material known in the world. It is also the basic unit of graphite. It can be self-wrapped to form zero-dimensional fullerene, or it can be self-packed and rolled into one-dimensional carbon nanometers. Tubes and layers are stacked to form three-dimensional graphite (Allen MJ, Tung VC, KanerR B. Honeycomb carbon: A review of graphene[J]. Chemical Reviews, 2010, 110(1): 132-145. ). Due to this special structure, graphene has many special excellent properties. Its theoretical specific surface area is as high as 2630 m 2...

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
IPC IPC(8): C01B32/19
Inventor 拜永孝高文生
Owner LANZHOU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap