Water-based conductive polymer and graphene dispersion liquid and preparation method thereof

A technology of graphene dispersion liquid and conductive polymer, which is applied in the direction of cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., which can solve the complex preparation process, restrict the industrial development of graphene, and low concentration and other problems, to achieve the effect of good repeatability, good conductivity and simple operation

Inactive Publication Date: 2015-04-22
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Combining the above methods, there are disadvantages such as complex preparation process or low concentration, which restricts the industrialization development of graphene

Method used

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  • Water-based conductive polymer and graphene dispersion liquid and preparation method thereof
  • Water-based conductive polymer and graphene dispersion liquid and preparation method thereof
  • Water-based conductive polymer and graphene dispersion liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Step 1: Preparation of conductive polymer aqueous solution

[0112] At room temperature, polyethylene dioxythiophene doped with polyvinyl sulfonic acid was uniformly mixed in deionized water to obtain an aqueous conductive polymer aqueous solution with a mass percent concentration of 3 wt %;

[0113] Step 2: Ultrasonic peeling preparation mixture

[0114] (A) At room temperature, add graphite to the aqueous conductive polymer aqueous solution prepared in step 1, and mix uniformly to obtain a graphite mixed solution;

[0115] Dosage: 2g of graphite needs 80mL of conductive polymer aqueous solution;

[0116] In the present invention, the scanning electron microscope picture of graphite raw material is as follows figure 1 shown.

[0117] (B) Put the graphite mixed solution in an ultrasonic generator, and after ultrasonic dispersion at an ultrasonic frequency of 60KHz for 36 hours, an aqueous conductive polymer-graphene mixed solution is obtained.

[0118] Step 3: Centr...

Embodiment 2

[0128] Step 1: Preparation of conductive polymer aqueous solution

[0129] At room temperature, polyacrylic acid-doped polyaniline was uniformly mixed in deionized water to obtain an aqueous conductive polymer aqueous solution with a mass percent concentration of 5 wt %;

[0130] Step 2: Ultrasonic peeling preparation mixture

[0131] (A) At room temperature, add graphite to the aqueous conductive polymer aqueous solution prepared in step 1, and mix uniformly to obtain a graphite mixed solution;

[0132] Dosage: 2g of graphite needs 50mL of conductive polymer aqueous solution;

[0133] (B) Put the graphite mixed solution in an ultrasonic generator, and after ultrasonic dispersion at an ultrasonic frequency of 80KHz for 48 hours, an aqueous conductive polymer-graphene mixed solution is obtained.

[0134] Step 3: Centrifugal separation to prepare dispersion liquid

[0135] Place the aqueous conductive polymer-graphene mixture prepared in step 2 in a centrifuge, and centrifuge...

Embodiment 3

[0138] Step 1: Preparation of conductive polymer aqueous solution

[0139] At room temperature, the aniline / N-propanesulfonic acid aniline copolymer is uniformly mixed in deionized water to obtain a water-based conductive polymer aqueous solution with a mass percent concentration of 1 wt %;

[0140] Step 2: Ultrasonic peeling preparation mixture

[0141] (A) At room temperature, add graphite to the aqueous conductive polymer aqueous solution prepared in step 1, and mix uniformly to obtain a graphite mixed solution;

[0142] Dosage: 2g of graphite needs 100mL of conductive polymer aqueous solution;

[0143] (B) Put the graphite mixed solution in an ultrasonic generator, and after ultrasonic dispersion at an ultrasonic frequency of 20KHz for 36 hours, an aqueous conductive polymer-graphene mixed solution is obtained.

[0144] Step 3: Centrifugal separation to prepare dispersion liquid

[0145] Place the aqueous conductive polymer-graphene mixture prepared in step 2 in a centr...

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Abstract

The invention discloses water-based conductive polymer and graphene dispersion liquid and a preparation method of the water-based conductive polymer and graphene dispersion liquid. The dispersion liquid regards water-based conductive polymers as a dispersing agent and a stabilizing agent, the principle is that strong pi-pi interaction between the water-based conductive polymers and the graphene is utilized, the graphene is stripped by liquid phase ultrasound, and the water-based conductive polymer and graphene dispersion liquid high in concentration and stability is obtained. The water-based conductive polymers not only facilitate stripping of the graphene, but also improve stability and electrical conductivity of the dispersion liquid. The dispersion liquid is good in stability, the graphene is of a structure with a single layer and two to eight layers, and the graphene content can reach 1-10 mg / mL. In addition, the method is simple in preparation technology, is low in cost and facilitates industrial preparation.

Description

technical field [0001] The invention belongs to the field of functional nanometer materials, in particular to a water-based conductive polymer-graphene dispersion liquid and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional honeycomb carbon material that is tightly packed by a single layer of carbon atoms. Since 2004, British scientist Geim et al. successfully prepared graphene that exists stably at room temperature, graphene has attracted widespread attention. (Novoselov K., Geim A., et al. Science, 2004, 306, 666-669). Compared with traditional carbon materials, graphene has more excellent electrical, thermal, mechanical and optical properties, which makes it have broad application prospects in the fields of electronics, energy conversion and storage, biotechnology, and biochemical sensors. In practical applications, graphene needs to be dispersed in water or organic solvents, but due to the large van der Waals force between graphen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/24H01B13/00
Inventor 朱英滕超鹿现永江雷
Owner BEIHANG UNIV
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