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Process and device for preparing nano-scale core-shell structured carbon-coated composite material

A composite material, core-shell structure technology, applied in the direction of structural parts, electrical components, battery electrodes, etc., can solve the problems of unreachable, poor controllability, low yield of nanomaterials, etc., to achieve uniform and smooth thickness, expandable area, thickness uniform effect

Inactive Publication Date: 2019-06-11
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbon-coated metal oxide nanomaterials prepared by these methods have low yield and poor controllability, and it is difficult to expand the scale of the carbon coating layer, and due to the strong agglomeration of nanoparticles, it is difficult to achieve single carbon nanoparticle coating.
Even more unable to achieve large-scale, continuous production capacity

Method used

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  • Process and device for preparing nano-scale core-shell structured carbon-coated composite material
  • Process and device for preparing nano-scale core-shell structured carbon-coated composite material
  • Process and device for preparing nano-scale core-shell structured carbon-coated composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Preparation of carbon precursor: Styrene and acetone were selected as raw materials (both with a purity of 99.99%), and the carbon precursor was prepared according to the volume ratio of the two as acetone:styrene=4:1, and mixed by ultrasonic vibration.

[0033] Step 2: Take a certain amount of CeO nanoparticles (particle size <100nm) and add them to ethanol (99.99% pure), stir magnetically for 1 hour, then perform ultrasonic dispersion for 30 minutes, and place the resulting suspension in a vacuum oven at 80°C to obtain The dry powder was ground with a quartz mortar and transferred to a quartz tube of a rotary vapor deposition system.

[0034] Step 3: Before the entire reaction starts, it is necessary to use argon gas to remove the air in the furnace, and set the parameters of the reaction system. The flow rate of argon gas is 100ml / min; the precursor liquid of step 1 carbon is continuously injected at 2ml within 15-60min of system operation. / h flow rate into ...

Embodiment 2

[0037] Step 1: Preparation of carbon precursor: Styrene and acetone were selected as raw materials (both with a purity of 99.99%), and the carbon precursor was prepared according to the volume ratio of the two as acetone:styrene=4:1, and mixed by ultrasonic vibration.

[0038] Step 2: Take a certain amount of CrO nanoparticles (particle size <100nm) and add them to ethanol (99.99% pure), stir magnetically for 1 hour, then disperse with ultrasonic waves for 30 minutes, and place the resulting suspension in a vacuum oven at 80°C to obtain The dry powder was ground with a quartz mortar and transferred to a quartz tube of a rotary vapor deposition system.

[0039] Step 3: Before the entire reaction starts, it is necessary to use argon gas to remove the air in the furnace, and set the parameters of the reaction system. The flow rate of argon gas is 100ml / min; the precursor liquid of step 1 carbon is continuously injected at 2ml within 15-60min of system operation. / h flow rate into...

Embodiment 3

[0042] Step 1: Preparation of carbon precursor: Styrene and acetone were selected as raw materials (both with a purity of 99.99%), and the carbon precursor was prepared according to the volume ratio of the two as acetone:styrene=4:1, and mixed by ultrasonic vibration.

[0043] Step 2: Take a certain amount of ZrO nanoparticles (particle size <100nm) and add them to ethanol (99.99% pure), stir magnetically for 1 hour, then perform ultrasonic dispersion for 30 minutes, and place the resulting suspension in a vacuum oven at 80°C to obtain The dry powder was ground with a quartz mortar and transferred to a quartz tube of a rotary vapor deposition system.

[0044] Step 3: Before the entire reaction starts, it is necessary to use argon gas to remove the air in the furnace, and set the parameters of the reaction system. The flow rate of argon gas is 100ml / min; the precursor liquid of step 1 carbon is continuously injected at 2ml within 15-60min of system operation. / h flow rate into ...

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Abstract

The invention discloses a process and a device for preparing a nano-scale core-shell structured carbon-coated composite material, and belongs to the technical field of nano material preparation, A precursor of carbon is prepared by taking styrene and acetone as raw materials; the selected non-magnetic metal oxide is subjected to ethanol treatment and drying to obtain powder for participating in areaction; and a rotary vapor deposition system is adopted. According to the method, the thickness and the number of layers of the nano-carbon coating layer are controlled through the rotary type vapordeposition system, so that the controllable core-shell carbon-coated metal oxide is successfully prepared. The core-shell structured carbon-coated metal oxide prepared by the invention has the characteristics of uniform carbon coating layer thickness and controllable number of layers, and can realize industrial and large-scale production. The agglomeration property of the produced core-shell carbon-coated metal oxide can be improved; and the material can be widely applied to the fields of a lubricating oil additive, a catalyst, surface conductive coatings and the like, and has huge market space and commercial value prospect.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a process and a device for preparing a carbon-coated composite material with a nanoscale core-shell structure. Background technique [0002] Compared with its single substance, nano-metal oxides have ultra-high hardness, good thermal conductivity, more stable chemical properties, and rich types. They are widely used in catalysis, photolysis, composite materials, heat-resistant materials, semiconductor materials, anti-acid and alkali corrosion and other fields. [0003] Carbon is one of the most abundant elements in the world and is used in a wide variety of materials. At present, there are good crystallized carbon materials, such as carbon nanotubes, graphene, fullerene, etc., all of which have excellent thermodynamic, mechanical, optical, and conductive properties. [0004] However, the specific surface area of ​​nanomaterials is too large, the particle size i...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/485H01M4/587H01M10/052
CPCY02E60/10
Inventor 王南南吕雪锋
Owner GUANGXI UNIV
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