Method for preparing fluorocarbon material on large scale

A technology of carbon fluoride and nano-carbon materials, which is applied in the direction of carbon fluoride, active material electrodes, electrical components, etc., can solve problems such as low conductivity, poor rate performance, and impact on applications, and achieve high specific power characteristics and increase power performance effect

Pending Publication Date: 2019-11-01
厦门弗能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon-fluorine bond of conventional fluorinated carbon is a covalent bond structure, resulting in extremely low conductivity, poor rate performance, and serious heat generation during discharge, which greatly affects the application of this material in high-power equipment.

Method used

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  • Method for preparing fluorocarbon material on large scale
  • Method for preparing fluorocarbon material on large scale

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Put 80g of glucose (C6H12O6) into a tube furnace, pass through argon gas, heat 80g of glucose (C6H12O6) to 400°C under the protection of argon atmosphere, keep it for 1h, and then quench to room temperature to obtain a structure with defects and a particle size distribution It is: d50=100nm nano-carbon material, wherein the carbon content is 80wt.%, the oxygen content is 10wt.%, and the hydrogen content is 10wt.%. The prepared carbon material is put into the fluorination equipment, and the fluorine gas content is 5wt.%. , a fluorine-containing gas with an argon content of 95wt.%, was kept at a pressure of 100 KPa, and reacted at 300°C for 11 h to obtain a fluorinated carbon material with a fluorine content of 50%.

Embodiment 2

[0023] Put 90g of sucrose (C12H22O11) into a tube furnace, pass through helium, heat 100g of sucrose (C12H22O11) to 450°C under the protection of helium atmosphere, keep it for 1h, and then quench it to room temperature to obtain a structure with defects and a particle size distribution It is: d50=90nm nano-carbon material, wherein the carbon content is 83wt.%, the oxygen content is 8wt.%, and the hydrogen content is 9wt.%. The prepared carbon material is put into the fluorination equipment, and the fluorine gas content is 6wt.%. , a fluorine-containing gas with a helium content of 94wt.%, maintained at a pressure of 110 KPa, and reacted at 400 °C for 11 h to obtain a fluorinated carbon material with a fluorine content of 52%.

Embodiment 3

[0025] Put 100g of glucose (C6H12O6) into a tube furnace, feed nitrogen, heat 100g of glucose (C6H12O6) to 500°C under the protection of nitrogen atmosphere, keep it warm for 1.5h, and then quench to room temperature to obtain a defect structure with a particle size distribution of : d50=80nm nano-carbon material, wherein the carbon content is 85wt.%, the oxygen content is 7wt.%, and the hydrogen content is 8wt.%. The prepared carbon material is put into the fluorination equipment, and the fluorine gas content is 7wt.%. A fluorine-containing gas with a nitrogen content of 93wt.% was kept at a pressure of 120 KPa and reacted at 450 °C for 12 h to obtain a fluorinated carbon material with a fluorine content of 54%.

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Abstract

The invention discloses a method for preparing fluorocarbon material on a large scale, belongs to the technical field of fluorocarbon. The method comprises that following steps: S1, preparing nano carbon material, putting carbohydrate as raw material into a tube furnace, introducing an inert gas, and heating the carbohydrate to 400-700 DEG C under the protection of an inert gas atmosphere; performing heat preservation for 1-2 h, then quenching to room temperature to obtain the nano carbon material with defective structure; S2: fluorinating the nano carbon material with defective structure prepared in the step S1, putting the nano carbon material with defective structure prepared in the step S1 into a fluorination device, introducing a fluorine-containing gas, contacting the fluorine-containing gas with the nano carbon material with defective structure prepared in the step S1, maintaining the pressure of 100-200 KPa, and reacting for 11-13 hours at 300-600 DEG C, stoping heating, and S3, cooling down to obtain material. The large-scale preparation method of the fluorocarbon material of the present invention can prepare the fluorocarbon material with high voltage and high specific power characteristics and improve the power performance of the lithium battery.

Description

technical field [0001] The invention belongs to the field of carbon fluoride preparation, and in particular relates to a large-scale preparation method of carbon fluoride materials. Background technique [0002] The structure and performance of fluorinated carbon materials are closely related to the structure of carbon source and the degree of fluorination. The research on fluorination of carbon materials can be traced back decades, from the earliest fluorinated graphite to fluorinated fullerenes, fluorinated single-walled carbon nanotubes, fluorinated multi-walled carbon nanotubes to fluorinated graphene. After decades of development, various fluorinated carbon materials with different structures and different physical and chemical properties have been obtained. When fluorinated carbon materials are used as anode materials for primary lithium batteries, their theoretical specific energy is as high as 2180Wh / kg, which is currently the commercial lithium battery system with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/10H01M4/583H01M6/14
CPCC01P2006/40C01B32/10H01M4/5835H01M6/14H01M2004/028
Inventor 黄有桂
Owner 厦门弗能科技有限公司
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