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Nano-structure graphite carbon material as well as preparation method and application thereof

A nanostructure, graphitic carbon technology, applied in the direction of nanocarbon, structural parts, chemical instruments and methods, etc., can solve the problems of poor conductivity, reduced specific surface area, large proportion of large pores, etc., to speed up charging and discharging , Appropriate specific surface area, and the effect of increasing capacity

Active Publication Date: 2018-06-01
谢金庚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a nanostructured graphitic carbon material and its preparation method and application, aiming to solve the problems of complex preparation process, single pore size distribution, high cost and three-dimensional intercommunication in existing porous carbon materials. Lack of structure, poor conductivity, or too large a proportion of large-diameter pores seriously reduces the specific surface area, resulting in low energy storage capacity, which is not conducive to the application of energy storage devices

Method used

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  • Nano-structure graphite carbon material as well as preparation method and application thereof

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preparation example Construction

[0025] see figure 1 , figure 1 It is a flowchart of a preferred embodiment of a method for preparing a nanostructured graphite carbon material of the present invention, as shown in the figure, including steps:

[0026] S10. After mixing and soaking the plant material and filler for a predetermined time according to a predetermined mass ratio, rolling and extruding are performed to obtain a rolled material;

[0027] S20. Under an inert atmosphere, heating the rolled material to 180-2100° C. and keeping it warm for 0.5-24 hours to obtain a carbonized material;

[0028] S30. Under centrifugation or vacuum conditions, immerse the carbonized material in a strong alkali solution, then heat the carbonized material to 400-1200° C. under an inert atmosphere, and keep it warm for 0.5-24 hours to obtain an activated material;

[0029] S40. Centrifugally clean the activated material, then soak it in a solution containing metal ions, dry it and heat it to 400-1200° C. under an inert atmo...

Embodiment 1

[0047] 1. Rolling: After cleaning and removing impurities, 100g of bagasse is mixed with 40g of liquid water-based acrylic resin and impregnated for 2 hours, and then rolled with a gear-type rolling mill. The rolled material is in the form of scattered materials;

[0048] 2. Carbonization: Put the rolling material into a heating tank, fill it with argon to discharge the air, heat it to 625°C, keep it warm for 6 hours, and after cooling down naturally, complete the carbonization step to obtain carbonized material;

[0049] 3. Activation: Put the carbonized material in the previous step into a vacuum tank, raise the temperature of the carbonized material to 70°C, vacuumize, inject a sodium hydroxide solution with a mass percentage concentration of 70% to soak, and then put the carbonized material into the heating tank after drying , fill up with argon to remove the air, raise the temperature to 780°C, keep it warm for 2 hours, and obtain the activated material after natural cooli...

Embodiment 2

[0052] 1. Rolling: After cleaning and removing 100g of straw stalk slag, mixed with 100g of liquid water-based melamine-formaldehyde resin and end-capped acid catalyst and impregnated for 4 hours, rolling is carried out with a gear and smooth roll rolling mill, and the rolling material produced by rolling is The form is a flat sheet material;

[0053] 2. Carbonization: put the rolling material into a heating tank, fill it up with nitrogen gas to discharge the air, heat it to 600°C, keep it warm for 4 hours, and complete the carbonization step after natural cooling to obtain carbonized material;

[0054] 3. Activation: Put the carbonized material in the previous step into a vacuum tank, raise the temperature of the carbonized material to 70°C, vacuumize, inject a potassium hydroxide solution with a mass percentage concentration of 60% for soaking, and put the carbonized material into the heating tank after drying , fill up with argon to remove the air, raise the temperature to ...

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Abstract

The invention discloses a nano-structure graphite carbon material as well as a preparation method and application thereof. The method comprises the following steps: taking cheap plant materials and acarbon-containing compound as raw materials and sequentially performing treatment such as soaking, rolling, extrusion, carbonization, activation and graphitization to finally obtain the nano-structuregraphite carbon material. Nanometer holes naturally formed by a plant material compact layer are completely utilized, a filling agent is added, rolling and extrusion treatment are conducted, and theholes with the hole diameter being equal to or more than 100 nanometers are reduced, so that the nano-structure graphite carbon material has a three-dimensional porous structure; furthermore, the specific surface area is proper, material exchange and efficient circulation of an energy storage device are benefited, the capacity is increased, and charging speed and discharging speed are increased, so the nano-structure graphite carbon material is very suitable for preparation of an electrode of electricity storage devices.

Description

technical field [0001] The invention relates to the field of carbon materials, in particular to a nanostructure graphite carbon material and its preparation method and application. Background technique [0002] Due to its huge specific surface area, stable physical and chemical properties, and three-dimensional interconnected porous structure, nano-porous carbon materials provide effective channels for the transport of substances, the flow of liquids, and the diffusion of gases. At the same time, the pore structure of nano-stereo-porous carbon can just meet the requirements of high-efficiency flow channels and easy composite design required by energy storage devices, making it an important material for electrodes of energy storage devices. [0003] At present, the method of using natural graphite or artificial graphite to prepare porous carbon has problems such as complex process, single pore size distribution, high cost, serious pollution, lack of three-dimensional intercon...

Claims

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Application Information

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IPC IPC(8): C01B32/205C01B32/15H01M4/587H01G11/36H01G11/34
CPCC01P2004/12H01G11/34H01G11/36H01M4/587Y02E60/10
Inventor 谢金庚
Owner 谢金庚
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