Method for preparing graphene membrane electrode with overlarge area and high quality

A graphene film, super-large area technology, applied in gaseous chemical plating, coating, metal material coating process, etc., can solve the problem of difficulty in forming a single-layer high-quality graphene film, a small graphene film area, and a graphene film. Poor quality and other problems, to achieve the effect of widening the field of use, easy control and low cost

Inactive Publication Date: 2010-06-30
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF1 Cites 70 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst grains on the substrate obtained by the latter method are small and poor in quality, and the graphene film formed on it is of poor quality, and mainly forms multilayer graphene films, and it is difficult to form a singl

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 preparing graphene membrane electrode with overlarge area and high quality
  • Method for preparing graphene membrane electrode with overlarge area and high quality

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Example 1: The preparation method of the super large area and high quality graphene film electrode of the present invention has the following steps:

[0015] 1) Place a spiral quartz cell with copper foil (thickness of 20 microns and size of 20×10cm) in the reactor, pass hydrogen 100Pa, heat to 1000℃, keep for 20 minutes, then pass methane The gas is 10Pa, after 20 minutes of heat preservation, the temperature is reduced to asphyxia temperature at a rate of 10°C / min, the hydrogen and methane gas are turned off, and a graphene film is obtained on the copper foil. .

[0016] 2) Spray photoresist on the graphene film and bake it at 180°C for 5 minutes to obtain a photoresist / graphene / copper foil combination.

[0017] 3) The product obtained in step 2) is immersed in a 10% (mass) ferric nitrate solution, and the copper foil is removed to obtain a photoresist / graphene combination.

[0018] 4) Remove the product of step 3) from the ferric nitrate solution with a glass slide, put it ...

Example Embodiment

[0020] Embodiment 2: The preparation method of the super large area and high quality graphene film electrode of the present invention has the following steps:

[0021] 1) Place a spiral quartz cell with nickel foil (thickness of 25 microns and size of 20×20cm) in the reactor, and pass hydrogen to 1000 Pa, heat to 800°C for 60 minutes, and then pass in methane , Ethane mixed gas 10000Pa, keep for 1 minute and then cool to room temperature at a rate of 100℃ / min, turn off the mixed gas of hydrogen, methane, and ethane to obtain graphene film on nickel foil.

[0022] 2) Spin-coating PMMA on the graphene film, and bake at 100°C for 10 minutes to obtain a PMMA colloid / graphene / nickel foil combination.

[0023] 3) The product obtained in step 2) is immersed in a 40% (mass) ferric nitrate solution, and the nickel foil is removed to obtain a PMMA colloid / graphene combination.

[0024] 4) Use a plastic sheet to take the product of step 3) out of the ferric nitrate solution, put it in deionized ...

Example Embodiment

[0026] Embodiment 3: The preparation method of the super large area and high quality graphene film electrode of the present invention has the following steps:

[0027] 1) Put the S-shaped quartz tank with cobalt foil (thickness 20 microns, size 20×20cm) in the reactor, and pass hydrogen 1Pa, heat to 700℃, keep for 0 minutes, and then pass ethanol The gas is 0.1Pa, and the temperature is reduced to room temperature at a rate of 5°C / min after holding for another 1 minute. The hydrogen and ethanol gases are turned off to obtain a graphene film on the cobalt foil.

[0028] 2) Spin-coating polyimide on the graphene film and bake at 80°C for 20 minutes to obtain a polyimide colloid / graphene / cobalt foil combination.

[0029] 3) The product obtained in step 2) is immersed in a 25% (mass) hydrochloric acid solution, and the cobalt foil is removed to obtain a polyimide colloid / graphene combination.

[0030] 4) Take out the product of step 3) from the hydrochloric acid solution with a paper shee...

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a method for preparing a graphene membrane electrode with overlarge area and high quality, which comprises the following steps of: placing a spiral or S-shaped quartz tank provided with a metal foil into a reactor by adopting a chemical vaporous deposition method, introducing a hydrocarbon for catalytic decomposition to obtain a graphene membrane on the metal foil; attaching an organic colloid on the product to obtain an organic colloid/grapheme/metal foil combination; removing the metal foil by using metal foil corrosive liquid to obtain an organic colloid/grapheme combination; taking out the product in the previous step by using a substrate, placing the product into deionized water, washing and drying to obtain an organic colloid/grapheme/ substrate combination; finally, removing the organic colloid by using an organic solvent, taking out and naturally drying to obtain the graphene membrane electrode with overlarge area and high quality, which is positioned on the substrate. The method has simple operation step, large area of the obtained product, low raw material cost, high electrical conductivity and high light transmittance, and is mainly used for the fields of semiconductors, solar batteries, liquid crystal panel display, and the like.

Description

technical field [0001] The invention relates to a preparation method of an electrode material, in particular to a preparation method of a super-large-area high-quality graphene film electrode. Background technique [0002] At present, the widely used transparent electrode material is indium tin oxide (ITO) transparent conductive film, and its light transmittance reaches 90%. , At the same time, the obtained ITO film is brittle, and it is not easy to make a flexible electrode. In recent years, graphene has been discovered as a new carbonaceous material in which a single layer of carbon atoms is tightly packed into a two-dimensional honeycomb structure. Its electrical conductivity is comparable to that of ITO, and its light transmittance can reach 97%. No need for high temperature and high pressure. The preparation methods of graphite thin films that have been studied mainly include micromechanical exfoliation method, liquid phase chemical method, pyrolysis SiC method and ch...

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): C23C16/26C23C16/455C23F1/14C03C17/22C04B41/50
Inventor 陈远富王泽高李言荣
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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