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

Method for continuously preparing powder graphene and graphene

A graphene and powder technology, applied in the field of graphene, continuous preparation of powder graphene, can solve problems such as restricting the application of graphene, and achieve the effect of continuous controllable growth and stable quality

Pending Publication Date: 2021-08-20
2D CARBON CHANGZHOU TECH INC
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These problems restrict the application of graphene in industry, so it is necessary to study a new method to solve the existing problems

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 continuously preparing powder graphene and graphene
  • Method for continuously preparing powder graphene and graphene
  • Method for continuously preparing powder graphene and graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The method for the continuous preparation of powder graphene in embodiment 1 adopts such as figure 1 The shown equipment includes a growth chamber 1, a heating device 2, a powder collection device 3 and an exhaust gas treatment device 4. The growth chamber 1 is located in the heating device 2, and the tail gas treatment device 4 and the powder collection device 3 are connected through pipelines in turn. Heating device 2. Concrete preparation method comprises the following steps:

[0035] S1: put the substrate material into the growth cavity 1, and vacuum the heating device 2, the vacuum degree is 50-10 -3 Pa, the inert gas is passed into the interior through the pipeline to normal pressure, and the growth chamber 1 is heated to the growth temperature under the protection of the inert gas. The base material is a metal material, including one or a combination of nickel, cobalt, iron, platinum, copper, aluminum, chromium, gold, manganese, titanium, tin, magnesium, galliu...

Embodiment 2

[0041] The method for the continuous preparation of powder graphene in embodiment 2 is similar to embodiment 1, the difference is that process parameters and materials have been adjusted, and the specific preparation method is as follows:

[0042] S1: Put the nickel powder into the ceramic crucible, the ceramic crucible is in the heating device 2, vacuumize the heating device 2, and the vacuum degree is 10 -3Pa, and argon gas is passed into it to normal pressure, and the ceramic crucible is heated to 1300 °C under the protection of argon gas;

[0043] S2: When the nickel powder is completely melted to form a nickel solution, a mixed gas of methane and argon is introduced into the nickel solution at a flow rate of methane / argon=50sccm / 20SLM, and the gas enters the nickel solution to generate bubbles, forming a gas cavity , methane reacts with nickel solution and rapidly decomposes at high temperature, and then generates graphene on the wall of the gas cavity;

[0044] S3: When...

Embodiment 3

[0048] The method for the continuous preparation of powder graphene in embodiment 3 is similar to embodiment 1, the difference is that process parameters and materials have been adjusted, and the specific preparation method is as follows:

[0049] S1: put aluminum powder into the ceramic crucible, the ceramic crucible is in the heating device 2, vacuumize the heating device 2, the vacuum degree is 0.1Pa, and pass nitrogen gas into it to normal pressure, and heat the ceramic crucible under the protection of nitrogen gas Heating to 1500°C;

[0050] S2: When the aluminum powder is completely melted to form an aluminum solution, a mixed gas of carbon monoxide and nitrogen is introduced into the aluminum solution at a flow rate of carbon monoxide / argon = 300 sccm / 20SLM, and the gas enters the aluminum solution to generate bubbles to form a gas cavity. Carbon monoxide reacts with aluminum solution and rapidly decomposes at high temperature, and then generates graphene on the wall of...

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
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Film diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for continuously preparing powder graphene and graphene. The preparation method comprises the following steps that: growth gas is cracked in a growth matrix at high temperature to reform graphene; the graphene is taken away from the surface of the growth matrix by inert gas, and the graphene is fed into a powder collecting device; and the inert gas is separated to obtain graphene powder. As the graphene is continuously taken out from the growth matrix, a new interface always exists in the growth matrix to react with the growth gas, so that new graphene is generated and then is taken out by the inert gas. The sheet diameter of the prepared graphene is 10 microns to 1 cm, and the electric conductivity reaches 105 to 106 S / m. By controlling the flow of the introduced gas and the growth temperature, the growth rate and the blow-out rate can be balanced, so that continuous controllable growth is realized; and the sheet diameter of the graphene is controlled by regulating and controlling the sizes of bubbles. As long as temperature and carbon source supply are kept, the whole system can continuously grow, and stable quality of the produced graphene is ensured, so that industrial mass production is realized.

Description

technical field [0001] The invention relates to the technical field of metal composite materials, in particular to a method for continuously preparing powdered graphene and graphene. Background technique [0002] Graphene, as the thinnest, strongest, and strongest new type of nanomaterial found so far, is called "black gold" and is the "king of new materials". Scientists even predict that graphene will "completely change the 21st century" ". Graphene is a single-layer sheet structure material composed of carbon atoms. Graphene has excellent two-dimensional electrical, optical, thermal, mechanical properties and chemical stability. Its unique two-dimensional structure and excellent crystallographic properties make it It has important application value in the fields of optoelectronic devices, sensors and solar energy. For example, graphene can exhibit quantum Hall effect and ballistic transport phenomenon at room temperature, and can be used to prepare room temperature balli...

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): C01B32/184
CPCC01B32/184C01B2204/32C01B2204/22
Inventor 金虎常博文周振义王增奎
Owner 2D CARBON CHANGZHOU TECH INC
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