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Method for preparing nano mesoporous carbon microsphere-graphene sandwich composite material

A technology of nano-mesoporous and composite materials, applied in the direction of graphene, nano-carbon, hybrid capacitor electrodes, etc., can solve the problems of complex preparation process and high cost, and achieve the effect of simple equipment, low cost and short cycle

Inactive Publication Date: 2017-06-30
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of nano mesoporous carbon microspheres-graphene interlayer composite material, which solves the problems of complex and high cost in the existing preparation process

Method used

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  • Method for preparing nano mesoporous carbon microsphere-graphene sandwich composite material
  • Method for preparing nano mesoporous carbon microsphere-graphene sandwich composite material
  • Method for preparing nano mesoporous carbon microsphere-graphene sandwich composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1, assemble the complex:

[0033] Accurately weigh 0.03g of graphene oxide in 50mL of 0.1mol / L NaOH aqueous solution (the mass ratio of graphene oxide to NaOH aqueous solution is 1:1673), and ultrasonically disperse to obtain a graphene oxide dispersion; weigh 0.1g of structure directing agent Add CTAB to 40mL 0.1mol / L NaOH aqueous solution (mass ratio of CTAB to NaOH aqueous solution is 1:416), then add 0.3g carbon source AMP (mass ratio of AMP to NaOH aqueous solution is 1:139), and then 1. React for 1 h at a stirring speed of 500 r / min to obtain a mixed liquid of mesoporous carbon precursor, add the graphene oxide dispersion liquid to the mixed liquid of mesoporous carbon precursor and react for 1 h at 20°C with a stirring speed of 600 r / min , assembled into complexes;

[0034] Step 2, aging treatment:

[0035] Put the complex assembled in step 1 into a reaction kettle, heat at 140°C for 48h, then filter and wash with deionized water until neutral, and dry at ...

Embodiment 2

[0040] Step 1, assemble the complex:

[0041]Accurately weigh 0.03g of graphene oxide in 50mL of 0.1mol / L NaOH aqueous solution (the mass ratio of graphene oxide to NaOH aqueous solution is 1:1673), and ultrasonically disperse to obtain a graphene oxide dispersion; weigh 0.2g of structure directing agent Add CTAB to 40mL 0.1mol / L NaOH aqueous solution (mass ratio of CTAB to NaOH aqueous solution is 1:208), then add 0.3g carbon source AMP (mass ratio of AMP to NaOH aqueous solution is 1:139), and then 1. React for 1 hour at a stirring speed of 500r / min to obtain a mesoporous carbon precursor mixture. Add the graphene oxide dispersion to the mesoporous carbon precursor mixture and react for 1 hour at 20°C with a stirring speed of 600r / min. , assembled into complexes;

[0042] Step 2, aging treatment:

[0043] Put the complex assembled in step 1 into a reaction kettle, heat at 140°C for 48h, then filter and wash with deionized water until neutral, and dry at 100°C for 12h to ob...

Embodiment 3

[0048] Step 1, assemble the complex:

[0049] Accurately weigh 0.03g of graphene oxide in 50mL of 0.1mol / L NaOH aqueous solution (the mass ratio of graphene oxide to NaOH aqueous solution is 1:1673), and ultrasonically disperse to obtain graphene oxide dispersion; weigh 0.3g of structure directing agent Add CTAB to 40mL 0.1mol / L NaOH aqueous solution (mass ratio of CTAB to NaOH aqueous solution is 1:139), then add 0.3g carbon source AMP (mass ratio of AMP to NaOH aqueous solution is 1:139), and then 1. React for 1 hour at a stirring speed of 500r / min to obtain a mesoporous carbon precursor mixture. Add the graphene oxide dispersion to the mesoporous carbon precursor mixture and react for 1 hour at 20°C with a stirring speed of 600r / min. , assembled into complexes;

[0050] Step 2, aging treatment:

[0051] Put the complex assembled in step 1 into a reaction kettle, heat at 140°C for 48h, then filter and wash with deionized water until neutral, and dry at 100°C for 12h to obt...

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Abstract

The invention discloses a method for preparing a nano mesoporous carbon microsphere-graphene sandwich composite material, graphene oxide is dissolved in a solvent A to obtain a graphene oxide dispersion; a structure directing agent is dissolved in a solution B, then a carbon source is added for full reaction to obtain a mesoporous carbon precursor mixed liquid; the graphene oxide dispersion is added into the mesoporous carbon precursor mixed liquid for reaction to obtain a complex; and the complex is successively aged and carbonized. The nano mesoporous carbon microsphere-graphene sandwich composite material with a high specific surface area, uniform morphology and a controllable pore structure can be prepared by the method at low temperature, according to actual needs, the amount of the structure directing agent and the carbon source can be adjusted for control of the pore structure. Equipment needed in the method is simple, and the method is short in cycle, simple in process and low in cost.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation method of a nanometer mesoporous carbon microsphere-graphene interlayer composite material. Background technique [0002] Graphene (GE) is a single layer of carbon atoms with sp 2 Nano-carbon materials composed of closely arranged hybrid orbitals have high electron mobility, excellent electrical and thermal conductivity, high light transmittance, ultra-high specific surface area and mechanical strength. They are used in supercapacitors, lithium-ion batteries, fuel cells, It has extremely important applications in solar cells, biosensors, catalyst carriers, and adsorption separation. However, due to the van der Waals force and the force of the π-π bond, the graphene nanosheets are easily agglomerated and stacked, and the pores are insufficient, thereby reducing the specific surface area of ​​graphene. Although mesoporous carbons (...

Claims

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Application Information

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IPC IPC(8): H01M4/587H01M4/36H01G11/36C01B32/184
CPCH01M4/362H01M4/587H01G11/36Y02E60/10
Inventor 程有亮张庆玲方长青杨露
Owner XIAN UNIV OF TECH
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