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Highly-graphitized carbon nanowire ball material and preparation method thereof

A technology for graphitizing carbon and nanowires, applied in the field of carbon nanomaterials, can solve problems such as expensive graphitization furnaces, and achieve the effects of easy industrial production, wide application prospects, and low graphitization temperature

Inactive Publication Date: 2016-08-24
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the conversion of amorphous carbon materials into graphitic carbon materials is mainly through high-temperature heat treatment (2000-3000°C) to cause structural reformation, but this high-temperature process requires the use of expensive graphitization furnaces and a large amount of energy consumption

Method used

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  • Highly-graphitized carbon nanowire ball material and preparation method thereof
  • Highly-graphitized carbon nanowire ball material and preparation method thereof
  • Highly-graphitized carbon nanowire ball material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] (1) Dissolve 10 g of sucrose in distilled water to make a solution with a concentration of 1 mol / L, transfer the solution to a high-pressure reactor with a volume filling rate of 0.5, and conduct a hydrothermal treatment at 180°C for 6 hours; filter the product with suction and wash and vacuum drying to obtain a hydrothermal carbon coke precursor.

[0046] (2) Prepare K with a concentration of 2mol / L 2 CO 3 Activator solution, then the hydrothermal carbon coke precursor prepared in step (1) is placed in the activator solution, wherein the mass ratio of the hydrothermal carbon coke precursor to the activator is 2:1, after the two are mixed, the Stir at room temperature for 60 minutes, then dry and grind it at 100°C to obtain a homogeneous mixture of hydrothermal carbon coke precursor and activator, then put the mixture in a porcelain boat and put it into an electric heating quartz tube furnace. At 99.9% N 2 Heat treatment at 800°C for 2 hours under gas protection, car...

Embodiment 2

[0050] (1) Mix 10g of β-cyclodextrin in 50mL of distilled water and stir, then transfer it to a high-pressure reactor with a volume filling rate of 0.5, and conduct a hydrothermal treatment at 200°C for 8 hours; filter the product, wash it, and dry it in vacuum. A hydrothermal carbon coke precursor is obtained.

[0051] (2) Prepare a NaOH activator solution with a concentration of 1mol / L, and then place the hydrothermal carbon coke precursor prepared in step (1) in the activator solution, wherein the mass of the hydrothermal carbon coke precursor and the activator The ratio is 4:1, the two are mixed and stirred at room temperature for 60 minutes, then dried and ground at 100°C to obtain a homogeneous mixture of hydrothermal carbon coke precursor and activator, and then the mixture is packed in a porcelain boat Put into the electric heating quartz tube furnace, in 99.9% CO 2 Heat treatment at 750°C for 3 hours under gas protection for carbonization and activation treatment, an...

Embodiment 3

[0056] (1) Dissolve 13.6 g of glucose in distilled water to form a solution with a concentration of 2 mol / L, transfer the solution to a high-pressure reactor with a volume filling rate of 0.5, and conduct a hydrothermal treatment at 190°C for 15 hours; filter the product with suction, After washing and vacuum drying, a hydrothermal carbon coke precursor is obtained.

[0057] (2) Prepare Na with a concentration of 1mol / L 2 CO 3 Activator solution, then the hydrothermal carbon coke precursor prepared in step (1) is placed in the activator solution, wherein the mass ratio of the hydrothermal carbon coke precursor to the activator is 6:1, after the two are mixed, the Stir at room temperature for 80 minutes, then dry and grind it at 100°C to obtain a homogeneous mixture of hydrothermal carbon coke precursor and activator, then put the mixture in a porcelain boat and put it into an electric heating quartz tube furnace. Heat treatment at 800°C for 3 hours under the protection of 99...

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Abstract

The invention discloses a highly-graphitized carbon nanowire ball material and a preparation method thereof. An activated carbon material is prepared from carbohydrate used as a carbon source through hydrothermal and carbonization activation, the prepared activated carbon material is dipped in a metal salt catalyst solution and dried, a prepared dipped sample is treated at the high temperature under the protection of inert gas, and a graphitized carbon and metal composite is obtained; the obtained composite is treated with an acidic solution, washed, subjected to solid-liquid separation and dried, and the highly-graphitized carbon nanowire ball material is prepared. The wire ball is formed by winding carbon nanowires with the diameters of 10-100 nm, the diameter of the wire ball is 0.2-5 mu m, and the graphitization degree is 0.7-1. The highly-graphitized carbon nanowire ball material has the advantages of uniform dispersion, high graphitization degree, large specific surface area, low cost of raw materials, simple process, no pollution, easiness in industrial production and the like and has wide application prospect in the fields of electrochemical energy storage, adsorption separation, catalyst carriers, medicines and the like.

Description

technical field [0001] The invention relates to a carbon nano material, in particular to a highly graphitized carbon nano coil material and a preparation method thereof. Background technique [0002] Carbon materials are widely used in many national economic fields such as energy, chemical industry, environmental protection, electronics and aerospace due to their excellent high thermal conductivity, high heat resistance, low price, stable physical and chemical properties, wide operating temperature range, and easy industrial production. Carbon materials with different morphological structures have potential application value in many aspects and have attracted extensive attention. Graphitization refers to the process of transforming disordered turbostratic carbon structure into ordered graphite structure. The graphitization treatment of carbon materials is conducive to improving the crystalline structure of the material and improving its electrical conductivity. Highly grap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01B31/12
CPCC01P2002/72C01P2004/03C01P2004/04C01P2004/16C01P2004/62
Inventor 刘恩辉刘田田滕远丁锐
Owner XIANGTAN UNIV
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