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

Preparation method of electroactive aniline oligomer-modified graphene

A technology of oligomer and graphene, which is applied in the field of preparation of electroactive aniline oligomer-modified graphene, can solve the problems of complex structure, polyaniline insoluble and difficult to process, etc., to improve specific capacitance, improve electrical activity, The effect of solubility enhancement

Inactive Publication Date: 2014-10-15
WUHAN INSTITUTE OF TECHNOLOGY
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyaniline is insoluble and difficult to process, and has a complex structure, while aniline oligomers have similar electrical activity to polyaniline, but are soluble in many solvents, and have a clear structure and are easy to process; so far, graphene has been treated with aniline oligomers Carry out covalent modification, improve the solubility of graphene and improve the electrochemical activity of graphene, related materials and preparation methods have not been reported yet

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
  • Preparation method of electroactive aniline oligomer-modified graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix 2.5g of natural graphite, 2.5g of sodium nitrate and 100ml of sulfuric acid, keep the ice bath at 0~5℃, slowly add 7.5g of potassium permanganate, stir continuously for 1h, add deionized water, and heat to maintain the temperature at 95~ Stir at 100°C for 15-30 minutes, then add 100ml of ionized water and hydrogen peroxide, and add the hydrogen peroxide dropwise until the solution stops bubbling. Suction filter and wash with 160ml of 5% hydrochloric acid aqueous solution (the molar ratio of hydrochloric acid to potassium permanganate is 2:1), and finally wash with deionized water to obtain graphite oxide. Graphite oxide was reduced with 15 g of sodium borohydride aqueous solution at 80°C for 2 hours; after the reaction was completed, it was cooled to room temperature, centrifuged and washed, and vacuum-dried at 40°C for 2 hours to obtain a product of reduced graphene.

[0020] 0.01g of reduced graphene and 0.2g of aniline tetramer are ultrasonically dispersed in ace...

Embodiment 2

[0024] Mix 2.5g of natural graphite, 2.5g of sodium nitrate and 100ml of sulfuric acid, keep the ice bath at 0~5°C, slowly add 10g of potassium permanganate, stir continuously for 1 hour, add deionized water, heat to maintain the temperature at 100°C, Stir for 30 minutes, then add 100ml of ionized water and hydrogen peroxide, and add the hydrogen peroxide dropwise until the solution stops bubbling. Suction filter and wash with 640ml of 5% hydrochloric acid aqueous solution (the molar ratio of hydrochloric acid to potassium permanganate is 5:1), and finally wash with deionized water to obtain graphite oxide. Graphite oxide was reacted with 50 g of sodium borohydride aqueous solution at 100° C. for 24 hours; after the reaction was completed, it was cooled to room temperature, centrifuged and washed, and vacuum-dried at 100° C. for 24 hours to obtain reduced graphene.

[0025] 0.01g of reduced graphene and 0.005 aniline pentamer are ultrasonically dispersed in ethanol, and then a...

Embodiment 3

[0027] Mix 2.5g of natural graphite, 2.5g of sodium nitrate and 100ml of sulfuric acid, keep the ice bath at 0~5°C, slowly add 7.5g of potassium permanganate, stir continuously for 1 hour, add deionized water, and heat to maintain the temperature at 95°C , stirred for 20 minutes, then added 200ml of ionized water and hydrogen peroxide, and added the hydrogen peroxide dropwise until the solution stopped bubbling. Suction filter and wash with 320ml of 5% hydrochloric acid aqueous solution (the molar ratio of hydrochloric acid to potassium permanganate is 4:1), and finally wash with deionized water to obtain graphite oxide. Graphite oxide was reacted with 100ml of hydrazine hydrate at 90°C for 16h; after the reaction was completed, it was cooled to room temperature, centrifuged and washed, and vacuum-dried at 60°C for 16h to obtain a product of reduced graphene.

[0028]0.01g of reduced graphene and 0.15g of aniline hexamer were ultrasonically dispersed in tetrahydrofuran, and th...

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 preparing graphene modified by electroactive aniline oligomers, comprising the following steps: reducing graphite oxide with a reducing agent, cooling to room temperature, centrifuging, washing, and drying to obtain reduced graphene; and aniline oligomerization The mixture is ultrasonically dispersed in an organic solvent, then dicyclohexylcarbodiimide and 4-dimethylaminopyridine are added to the resulting mixed solution, stirred, and heated for reaction. After the reaction is completed, wash with acetone, ethanol and distilled water for several times and finally dried to obtain aniline oligomer-modified graphene; doped with hydrochloric acid or dodecylbenzenesulfonic acid to obtain electroactive aniline oligomer-modified graphene. The beneficial effect of the present invention is that: the solubility in organic solvents is improved, and its specific capacitance has reached 160 F / g, so that it has broader application prospects in the fields of supercapacitors, solar cells and the like.

Description

technical field [0001] The invention relates to a preparation method of electroactive aniline oligomer modified graphene. Background technique [0002] In 2004, Geim et al. of the University of Manchester in the United Kingdom prepared graphite-graphene with a single-layer structure for the first time by means of micromechanical exfoliation (see Novoselov K S, Geim A K, Morozov S V, et al . Science, 2004, 306, 666-669). Graphene has a very high specific surface area, excellent thermal conductivity, electrical conductivity and mechanical properties, and high-speed electron mobility at room temperature, and has potential application prospects in electronic devices, biomedicine and other fields. Recently, many researchers have devoted themselves to the synthesis of large-scale and large-scale graphene. The chemical redox method in the solution system is a low-cost, potential method for mass production of graphene. The process is to obtain graphite oxide after graphite is oxid...

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 Patents(China)
IPC IPC(8): C01B31/04C01B32/184C01B32/194
Inventor 杜飞鹏叶恩洲朱洁李亚琴
Owner WUHAN INSTITUTE OF TECHNOLOGY
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