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Flexible conductive composite material with nano net-shaped and flower-shaped structure as well as preparation method and application thereof

A flower-like structure, flexible conductive technology, applied in the direction of material analysis, structural parts, and analysis materials through electromagnetic means, can solve the problems of unfavorable carrier migration, transconductance value needs to be improved, and difficult conductive paths of nanoflower structure. To achieve the effect of enriching active sites, high specific surface area, and increasing the amount of modification

Active Publication Date: 2020-09-08
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only the nanoflower structure is difficult to form a stable conductive path, which is not conducive to the migration of carriers.
And when used in organic electrochemical transistors, the transconductance value also needs to be improved

Method used

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  • Flexible conductive composite material with nano net-shaped and flower-shaped structure as well as preparation method and application thereof
  • Flexible conductive composite material with nano net-shaped and flower-shaped structure as well as preparation method and application thereof
  • Flexible conductive composite material with nano net-shaped and flower-shaped structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A flexible conductive composite material with a nano-network and flower-like structure, the preparation method of which is as follows:

[0047] S1. Disperse the single-layer graphene oxide powder in deionized water, and use a cell crushing instrument to ultrasonically treat it for 1.5-8 hours at a temperature of 0°C to obtain a 5 mg / mL single-layer graphene oxide nanosheet solution; soak the cotton yarn In the single-layer graphene oxide solution, vibrate or ultrasonic for 0.5-12h, the oscillation speed is 100-200r / min, and obtain the cotton yarn (GO / cotton yarn) loaded with graphene oxide nanosheets;

[0048] S2. Under the power of 100W, place the wet GO / cotton yarn obtained in step S1 in the CVD vapor deposition chamber, and continuously feed a mixed gas with a volume fraction ratio of 85%: 15% nitrogen and hydrogen, and the reduction reaction Take it out after 1h, and obtain the RGO / cotton yarn with fluffy scale and groove structure on the surface;

[0049] Using an...

Embodiment 2

[0052] A flexible conductive composite material with a nano-network and flower-like structure, its preparation method is compared with Example 1, the difference is that in step S1, the flexible substrate is before loading the graphene oxide nanosheets , the plasma sputtering pretreatment is performed first, as follows:

[0053] S11. Place the cotton yarn in the plasma sputtering chamber, when the air pressure in the chamber reaches 1×10 -2 ~8×10 -2 At mbar, a mixed gas composed of 85% by volume fraction: 15% of nitrogen and hydrogen is introduced, and atomized deionized water is introduced at the same time. When the chamber pressure reaches 1×10 -1 ~3×10 -2 At mbar, process the sample for 15 minutes at a power of 100W; stop feeding deionized water, and continue to process the sample for 15 minutes with a mixed gas composed of nitrogen and hydrogen with a volume fraction ratio of 85%:15%, and obtain a cotton yarn with a groove structure on the surface (plasma / cotton yarn); ...

Embodiment 3～6

[0067] A flexible conductive composite material with a nano-network and flower-like structure, its preparation method is compared with Example 2, the difference is that in step S2, the volume fraction ratio of nitrogen and hydrogen is shown in Table 2. Others are substantially the same as those in Embodiment 2, and will not be repeated here.

[0068] Preparation conditions and transistor transconductance value of table 2 embodiment 3~6

[0069] Example The volume fraction ratio of nitrogen and hydrogen 3 50％：50％ 4 80％：20％ 5 90％：10％ 6 99％：1％

[0070] The experimental results show that by adjusting the ratio of nitrogen and hydrogen in the reducing gas, the amount of nitrogen doping in the reduced graphene oxide obtained by gas phase reduction can be adjusted. The structure and electrical properties of composite materials have a certain influence. In actual operation, the composition of the gas-phase reducing atmosphere can be specifically r...

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Abstract

The invention provides a flexible conductive composite material with a nano net-shaped and flower-shaped structure as well as a preparation method and application thereof. The preparation method comprises the following steps of loading a graphene oxide nanosheet on the surface of a flexible base material, and then reducing by a gas phase reduction method to obtain a reduced graphene oxide nanosheet which is loaded on the surface of the flexible base material and is of a fluffy scale and groove structure; and carrying out in-situ polymerization on the surface of the reduced graphene oxide nanosheet by taking the reduced graphene oxide nanosheet as a template to obtain a conductive polymer loaded on the surface of the reduced graphene oxide nanosheet. By means of the method, the conductive composite material distributed in a three-dimensional nanometer net-shaped and flower-shaped multilevel structure mode is obtained, the three-dimensional nanometer net-shaped structure is composed of aplurality of nanowires formed by compounding the reduced graphene oxide nanosheets and the conductive polymers, and the specific surface area is high; the migration rate of carriers and the exchangerate of ions can be improved, so that the electrical performance of the conductive composite material can be improved. The conductive composite material can be applied to the fields of sensors, capacitors, batteries and the like, and an organic electrochemical transistor with a high transconductance value can be obtained.

Description

technical field [0001] The invention belongs to the technical field of conductive composite materials, and in particular relates to a flexible conductive composite material with a nano-network and flower-like structure, a preparation method and an application thereof. Background technique [0002] Flexible substrates such as fibers and fabrics are considered to be ideal substrates for the preparation of wearable electronic devices due to their characteristics of lightness, softness, stretch resistance and porous structure, which can load a large amount of active substances. In recent years, conductive materials such as carbon nanotubes, graphene, polypyrrole, and polyaniline have been successfully combined with fibers or fabrics to obtain flexible conductive composite materials, which can be used in the preparation of electrode materials for organic electrochemical transistors and supercapacitors. [0003] For example, the Chinese invention patent CN106283610B discloses a me...

Claims

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Application Information

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IPC IPC(8): D06M11/74D06M13/256D06M15/37D06M10/02H01M4/36H01M4/583H01M4/60H01M4/62G01N27/414D06M101/06
CPCD06M11/74D06M13/256D06M15/37D06M10/025H01M4/366H01M4/583H01M4/625H01M4/602G01N27/4145D06M2101/06Y02E60/10
Inventor 王栋卿星李沐芳
Owner WUHAN TEXTILE UNIV
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