Graphene conductive ink and preparing method thereof

A technology of conductive ink and graphene, which is applied in the field of graphene, can solve problems such as hindering the application of liquid phase exfoliation, expensive metal consumables, and complicated processes, and achieve excellent printing adaptability, excellent electrical conductivity, and high electrical conductivity.

Inactive Publication Date: 2019-09-06
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Traditional electronic devices and energy storage devices prepared by photolithography, chemical etching, chemical plating, vacuum deposition, etc. have many defects: expensive metal consumables, complicated processes, environmental pollution, etc.
This method is relatively simple and avoids toxic and harmful solvents. However, the dispersion of graphene or the addition of too much insulating surfactant will hinder the application of liquid phase exfoliation in the field of conductive inks.

Method used

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  • Graphene conductive ink and preparing method thereof
  • Graphene conductive ink and preparing method thereof
  • Graphene conductive ink and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] According to the technical scheme disclosed by the present invention, the following operations are carried out:

[0037](1) Accurately weigh the following raw materials in parts by mass: 10 g of 8000-mesh natural flake graphite, 10 g of sodium p-aminobenzenesulfonate, 240 mL of isopropanol, and 160 mL of distilled water, and ultrasonically mix the raw materials of the above components to obtain a grinding liquid;

[0038] (2) Put the obtained grinding liquid into a basket mill and pass through a zirconia ball mill with a particle diameter of 2.5 mm for 24 hours at a speed of 2000 rpm, and feed into cooling water for circulating cooling;

[0039] (3) Take out the upper material after grinding from the grinder barrel, and use isopropanol / water (V 异丙醇 / V 水 =3 / 2) The solvent carries out centrifugal washing 5 times to the material, finally obtains the self-stable dispersed graphene nanomaterial, and the specific preparation process is as follows figure 1 shown;

[0040] (...

Embodiment 2

[0045] According to the technical scheme disclosed by the present invention, the following operations are carried out:

[0046] (1) Accurately weigh the following raw materials by mass: 10 g of 8000-mesh natural flake graphite, 5 g of sodium p-aminobenzenesulfonate, 240 mL of isopropanol, and 160 mL of distilled water, and ultrasonically mix the raw materials of the above components to obtain a grinding liquid;

[0047] (2) Put the obtained grinding liquid into a basket mill and pass through a zirconia ball mill with a particle diameter of 2.5 mm for 24 hours at a speed of 2000 rpm, and feed into cooling water for circulating cooling;

[0048] (3) Take out the upper material after grinding from the grinder barrel, and use isopropanol / water (V 异丙醇 / V 水 =3 / 2) The solvent carries out centrifugal washing 5 times to the material, finally obtains self-stabilizing dispersed graphene nanomaterials, and its preparation process is as follows figure 1 shown;

[0049] (4) Accurately we...

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Abstract

The invention discloses a graphene conductive ink and a preparing method thereof. The graphene conductive ink is prepared from self-stabilization dispersed graphene nanomaterial, an alcohol and watermixed solvent and an ink adhesive according to the mass ratio of (1-50):1000:(1-20). The self-stabilization dispersed graphene nanomaterial is prepared from sodium sulfanilate, natural flake graphiteand an alcohol and water mixed solvent through a liquid-phase stripping method. The sodium sulfanilate acts on the surface of graphene through a pi-pi conjugation effect, a physical adsorption effectand a chemical grafting effect. The graphene conductive ink has the advantages of being stable in dispersion, high in conductivity, excellent in printing adaptability, excellent in flexibility and thelike and is expected to be used for printing various flexible electronic devices.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to a graphene conductive ink and a preparation method thereof. Background technique [0002] Conductive ink is a type of composite material composed of conductive fillers, binders, solvents and various auxiliary agents, among which conductive filler is the key phase of the performance of conductive ink. In the conductive ink, there are countless conductive particles evenly dispersed in the binder and ink solvent. The liquid conductive ink is in an insulating state. The conductive pattern or printed film obtained after the conductive ink is printed, and the printed product obtained after annealing has a certain degree of conductivity. . [0003] Traditional electronic devices and energy storage devices prepared by photolithography, chemical etching, chemical plating, vacuum deposition, etc. have many defects: expensive metal consumables, complicated processes, environmental polluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/107C09D11/03
CPCC09D11/52C09D11/107C09D11/03C01B32/19C01B32/194C09D11/037B82Y30/00B82Y40/00C01B32/225C01B2204/22C09D11/023C09D11/033
Inventor 陈国华邱欣斌刘飞翔
Owner HUAQIAO UNIVERSITY
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