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Graphite alkenyl conductive material and preparation method thereof

A conductive material, graphene-based technology, applied in conductive materials dispersed in non-conductive inorganic materials, chemical instruments and methods, nanotechnology for materials and surface science, etc., to achieve good chemical stability and thermal stability , the effect of easy operation

Inactive Publication Date: 2011-11-23
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the shortcomings of high temperature or toxic reducing agent hydrazine in the preparation of graphene materials in the prior art, the present invention provides a graphene-based conductive material that can be prepared under low temperature conditions and is environmentally friendly and pollution-free and a preparation method thereof

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  • Graphite alkenyl conductive material and preparation method thereof
  • Graphite alkenyl conductive material and preparation method thereof
  • Graphite alkenyl conductive material and preparation method thereof

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preparation example Construction

[0017] The invention provides a method for preparing a graphene-based conductive material, the method comprising: forming a solid film on a substrate layer from a graphene oxide sol and a metal salt solution and / or a metal colloid solution, and then combining the solid film with the substrate After the material layer is separated or not separated, the graphene-based conductive material is obtained by placing it for 30 seconds to 10000 hours under the condition of a temperature of -50°C to 200°C and a hydrogen pressure of 0.2-100MPa. Preferably, the temperature is 20-120°C, the hydrogen pressure is 1-15Mpa, and the reaction time can be 2 hours-5 days. It can be seen that, by adopting the preparation method of the present invention, the graphene-based conductive material can be prepared conveniently at a relatively low temperature such as room temperature.

[0018] In the preparation method of the graphene-based conductive material provided by the invention, by controlling the c...

Embodiment 1

[0035] This embodiment is used to illustrate the preparation method of the graphene-based conductive material of the present invention.

[0036] (1) Preparation of graphene oxide colloidal solution: the concentration of 1g of natural flake graphite added to 20g is in the concentrated sulfuric acid of 95% by weight, stirred overnight under an ice bath at 0°C, then 0.15g was added in the resulting mixture After stirring for 30min, add 3g of potassium permanganate and control the temperature below 20°C; then increase the temperature to 35°C and keep this temperature for 30min, then add 45ml of water to the mixture, Raise the temperature to 90-95°C, and maintain this temperature for 15 minutes; then add 30ml of hydrogen peroxide with a concentration of 30% by weight, stir for 30 minutes, then add 26ml of water, filter while it is hot, and use 50ml of hydrochloric acid with a concentration of 3% by weight Wash 3 times, put the gained filter cake into 400ml of water for ultrasonic t...

Embodiment 2

[0039] This embodiment is used to illustrate the preparation method of the graphene-based conductive material of the present invention.

[0040] (1) preparation of graphene oxide colloidal solution: with the step (1) of embodiment 1;

[0041] (2) Preparation of graphene-based conductive material: add 0.5ml of palladium chloride aqueous solution (concentration is calculated in palladium) to the graphene oxide colloid solution (wherein approximately containing graphene oxide 60mg) obtained in the above-mentioned step (1) of 60ml 2g / l, Beijing Chemical Reagent Company), on the washed PET (polyethylene glycol phthalate) (2cm × 2cm), drop 0.5ml of the resulting mixed solution, use a spin coater (Chinese Academy of Sciences Electronics) at room temperature Produced, model: kW-4A) Spin coating at a speed of 2000r / min for 60 seconds to obtain a solid substance of graphene oxide and palladium chloride on a PET sheet, which is placed in an autoclave under 5MPa hydrogen pressure, 25 Rea...

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Abstract

The invention provides a method for preparing a graphite alkenyl conductive material, comprising the following steps of: preparing oxidation graphite alkenyl sol and metal salt solution and / or metal colloid solution into a solid film on a substrate layer; and then, after separating or not separating the solid film from the substrate layer, placing at minus 50 to 200 DEG C for 30 seconds to 10000 hours at hydrogen pressure of 0.2-100 MPa to obtain the graphite alkenyl conductive material. The invention further provides a graphite alkenyl conductive material which is prepared by the method. Thepreparation method provided by the invention can be carried out at a low temperature. The hydrogen as a reducing agent used in the invention is a cheap and easily obtained raw material. Because no toxic hydrazine is used as a reducing agent, the preparation process is simple and environmentally-friendly.

Description

technical field [0001] The invention relates to a preparation method of a graphene-based conductive material and a graphene-based conductive material prepared by the method. Background technique [0002] Graphene is composed of hexagonally arranged sp 2 A two-dimensional sheet of carbon atoms with a thickness of one atom, which is the building block of graphite. It has been found that graphene has many properties that graphite does not have, such as room temperature quantum Hall effect, massless transport properties, optical properties, thermoelectric transport properties, light transmittance and extremely high Young's modulus. Due to these properties of graphene, graphene and graphene-based materials have potential applications in many aspects, such as display films, solar cell electrodes, lithium-ion battery electrodes, field effect transistors, and sensors. [0003] Generally, graphene materials are prepared in large quantities by the method of graphene oxide reduction....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/04
CPCB82Y30/00C01B31/0438H01B1/24B82Y40/00H01B1/04H01B1/02C01B31/0476C01B32/192Y10T428/269Y10T428/26
Inventor 梁明会智林杰
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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