Check patentability & draft patents in minutes with Patsnap Eureka AI!

Graphene surface modification treatment method

A technology of surface modification and treatment method, applied in the direction of graphene, chemical instruments and methods, nano-carbon, etc., can solve the problems of high cost, complex process, low yield, etc. The effect of capacitors

Inactive Publication Date: 2013-02-13
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there are many known methods for preparing graphene, such as: (1) micromechanical exfoliation method, which can only produce a very limited number of graphene sheets, which can be used as basic research; (2) ultra-high vacuum Graphene epitaxial growth method, the high cost of this method and the structure of small wafers limit its application; (3) chemical vapor deposition (CVD), this method can meet the requirements of large-scale preparation of high-quality graphene, but the cost Higher, complex process; (4) solvent stripping method, the disadvantage of this method is that the yield is very low, which limits its commercial application

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
  • Graphene surface modification treatment method
  • Graphene surface modification treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of graphite oxide: Add 20g of 50-mesh graphite powder with a purity of 99.5%, 10g of potassium persulfate and 10g of phosphorus pentoxide into concentrated sulfuric acid at 80°C, stir evenly, cool for more than 6h, wash until neutral, and dry ;Add the dried sample to 0°C, 230mL of concentrated sulfuric acid, then add 60g of potassium permanganate, keep the temperature of the mixture below 20°C, then keep it in an oil bath at 35°C for 2h, then slowly add 920mL of deionized water; after 15min, add 2.8L of deionized water (which contains 50mL of mass percent concentration of 30% hydrogen peroxide), then the color of the mixture turns bright yellow, suction filtration while hot, and then use 5L of mass percent concentration of 10% hydrochloric acid Perform washing, suction filtration, and vacuum drying at 60°C for 48 hours to obtain graphite oxide;

[0033] (2) Preparation of graphene: put the graphite oxide obtained in (1) into a muffle furnace for calcinat...

Embodiment 2

[0041] (1) Preparation of graphite oxide: Add 20g of 50-mesh graphite powder with a purity of 99.5%, 10g of potassium persulfate and 10g of phosphorus pentoxide into concentrated sulfuric acid at 80°C, stir evenly, cool for more than 6h, wash until neutral, and dry ;Add the dried sample to 0°C, 230mL of concentrated sulfuric acid, then add 60g of potassium permanganate, keep the temperature of the mixture below 20°C, then keep it in an oil bath at 35°C for 2h, then slowly add 920mL of deionized water; after 15min, add 2.8L of deionized water (which contains 50mL of mass percent concentration of 30% hydrogen peroxide), then the color of the mixture turns bright yellow, suction filtration while hot, and then use 5L of mass percent concentration of 10% hydrochloric acid Perform washing, suction filtration, and vacuum drying at 60°C for 48 hours to obtain graphite oxide;

[0042] (2) Preparation of graphene: Put the graphite oxide obtained in (1) into a muffle furnace for calcinat...

Embodiment 3

[0045] (1) Preparation of graphite oxide: Add 20g of 50-mesh graphite powder with a purity of 99.5%, 10g of potassium persulfate and 10g of phosphorus pentoxide into concentrated sulfuric acid at 80°C, stir evenly, cool for more than 6h, wash until neutral, and dry ;Add the dried sample to 0°C, 230mL of concentrated sulfuric acid, then add 60g of potassium permanganate, keep the temperature of the mixture below 20°C, then keep it in an oil bath at 35°C for 2h, then slowly add 920mL of deionized water; after 15min, add 2.8L of deionized water (which contains 50mL of mass percent concentration of 30% hydrogen peroxide), then the color of the mixture turns bright yellow, suction filtration while hot, and then use 5L of mass percent concentration of 10% hydrochloric acid Perform washing, suction filtration, and vacuum drying at 60°C for 48 hours to obtain graphite oxide;

[0046] (2) Preparation of graphene: put the graphite oxide obtained in (1) into a muffle furnace for calcinat...

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 present invention belongs to the field of graphene materials, and discloses a graphene surface modification treatment method, which comprises the following steps: making oxidized graphite into graphene; and placing the graphene in a surface modification agent to carry out a surface modification treatment. According to the graphene surface modification treatment method, the graphene absorbs the surface modification agent, such that lipophilicity on the organic electrolyte by the graphene material is improved, and wetting on the organic electrolyte by the graphene surface is easily achieved so as to substantially increase specific capacitance of the graphene material and improve capacity of the super-capacitor applying the graphene.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a method for surface modification of graphene. Background technique [0002] Andre K. Geim (Andre K.Geim) of the University of Manchester in the United Kingdom prepared graphene materials in 2004, and it has received widespread attention due to its unique structure and photoelectric properties. Single-layer graphite is considered an ideal material due to its large specific surface area, excellent electrical and thermal conductivity, and low thermal expansion coefficient. Such as: 1, high strength, Young's molar weight, (1,100GPa), breaking strength: (125GPa); 2, high thermal conductivity, (5,000W / mK); 3, high electrical conductivity, carrier transport rate, ( 200,000cm 2 / V*s); 4, high specific surface area, (theoretical calculation value: 2,630m 2 / g). In particular, its high conductivity, large specific surface properties and its two-dimensional nanoscale structural proper...

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): C01B31/04C01B32/184C01B32/194
Inventor 周明杰钟玲珑王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com