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

CNT/three-dimensional grapheme composite material, preparation method and application thereof

A technology of carbon nanotubes and composite materials, applied in the field of supercapacitor preparation, can solve the problems of reducing the load of electrochemical active materials, limiting the application of electrodes, complex processes, etc., and achieves low cost, high working stability and simple preparation method. Effect

Active Publication Date: 2018-03-16
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, various carbon nanotube / three-dimensional graphene nanostructure composite materials have been designed. For example, some researchers have prepared manganese oxide-coated carbon nanotubes / three-dimensional graphene foam (CNTs / 3DGF) Nanostructured electrodes, but the process of preparing the nanostructured composite material is complex and costly, and there are nearly 90% pores in the foamed graphene, and carbon nanotubes are often only grown on the skeleton of the foamed graphene, so that greatly reduces The subsequent loading of electrochemically active species thus limits the application of such electrodes in flexible supercapacitors.

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
  • CNT/three-dimensional grapheme composite material, preparation method and application thereof
  • CNT/three-dimensional grapheme composite material, preparation method and application thereof
  • CNT/three-dimensional grapheme composite material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] The embodiment of the present application provides a method for preparing a carbon nanotube / three-dimensional graphene composite material including:

[0040] A three-dimensional graphene airgel is provided, and at least the surface of the three-dimensional graphene airgel and the inner walls of the holes contained are loaded with catalytically active metal ions;

[0041] The three-dimensional graphene airgel is placed in a chemical vapor growth equipment, and a non-ionic polymer compound is used as a carbon source, and carbon nanotubes are grown on the surface and inside of the three-dimensional graphene airgel by chemical vapor deposition , preparing the carbon nanotube / three-dimensional graphene composite material.

[0042] In some preferred embodiments, the preparation method includes:

[0043] The carbon source and the three-dimensional graphene airgel are respectively placed in the first area and the second area in the chemical vapor growth equipment, and the firs...

Embodiment 1

[0086] Firstly, three-dimensional graphene airgel is prepared, and the steps include:

[0087] Nickel acetate (Ni(AC) 2 ) and graphene aqueous solution (GO) and according to different mass ratios (m Ni / m GO =1wt%, 2wt%, 3wt%) were ultrasonically mixed, and then a three-dimensional graphene hydrogel was obtained by hydrothermal synthesis (100°C, 5h).

[0088] The aforementioned three-dimensional graphene hydrogel was freeze-dried at -30° C. and 2 Pa for 6 hours to obtain a three-dimensional graphene aerogel.

[0089] Using polyvinylpyrrolidone (PVP) as a solid carbon source, put the carbon source and the three-dimensional graphene airgel into the quartz tube of the chemical vapor phase growth equipment respectively, and make the distance between the two about 5-10cm, and pass through the tube before the reaction starts. Enter the carrier gas (10-30min) to remove the air in the growth equipment and keep the airflow at the same speed (about 10-30sccm) throughout the reaction ...

Embodiment 2

[0094] Firstly, the airgel of three-dimensional graphene is prepared, and the specific steps are as follows:

[0095] Nickel acetate (Ni(AC) 2 ) and graphene aqueous solution (GO) and according to different mass ratios (m Ni / m GO =4wt%, 6wt%, 8wt%) were ultrasonically mixed, and then the three-dimensional graphene hydrogel was obtained by hydrothermal synthesis (120°C, 8h).

[0096] The aforementioned three-dimensional graphene hydrogel was freeze-dried at -10° C. and 5 Pa for 8 hours to obtain a three-dimensional graphene aerogel.

[0097] Using polyvinylpyrrolidone (PVP) as a solid carbon source, put the carbon source and the three-dimensional graphene airgel into the quartz tube of the chemical vapor phase growth equipment respectively, and make the distance between the two about 5-10cm, and pass through the tube before the reaction starts. Enter the carrier gas (10-30min) to remove the air in the growth equipment and keep the airflow at the same speed (about 10-30sccm) t...

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
pore sizeaaaaaaaaaa
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a CNT(Carbon Nano Tube) / three-dimensional grapheme composite material, preparation method and application thereof. The preparation method includes disposing three-dimensional grapheme aerogel in a chemical vapor phase growth device, growing CNT on the surface and in the three-dimensional grapheme aerogel through a chemical chemical vapor deposition method by taking non-ionic high-molecular compound as a carbon source and acquiring a target project. According to the invention, the electrical conductivity of a conducting network of the CNT / three-dimensional grapheme composite material is good, the specific area is large, the electroactive material loading capacity is high and the electro-chemical performance is stable. The invention also discloses an electrode material, electrode and energy storage device based on the composite material, such as flexible full solid state asymmetric supercapacitors having very high stability.

Description

technical field [0001] This application specifically relates to a carbon nanotube / three-dimensional graphene composite material, its preparation method and application, such as its use in the preparation of supercapacitors, and belongs to the field of nanomaterial preparation. Background technique [0002] Constructing carbon nanotube / three-dimensional graphene (CNTs / 3DG) nanostructured composite materials, giving full play to the synergistic effect of carbon nanotubes and graphene, not only can use the high specific surface area of ​​carbon nanotubes / three-dimensional graphene to increase electrochemical activity The load of substances (transition metal oxides, conductive polymers) can also make full use of its conductive network to accelerate the conduction of electrons and ions. Therefore, electrodes with such nanostructures are often considered to be the most promising supercapacitor electrodes. In the prior art, various carbon nanotube / three-dimensional graphene nanost...

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 Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/26H01G11/32H01G11/36H01G11/46H01G11/48
Inventor 张跃钢潘争辉杨洁刘美男李继元侯远
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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