Method for preparing carbon fluorine material

A technology of carbon fluoride and carbon materials, applied in the direction of carbon fluoride, structural parts, electrical components, etc., can solve the problems of high temperature, long fluorination time, etc., to reduce the preparation cost, short fluorination time, and good electrochemical performance. performance effect

Inactive Publication Date: 2019-05-21
PERIC SPECIAL GASES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the industrialized method is the high-temperature gas-phase fluorination method. The commonly used carbon material is graphite material. After high-temperature gas-phase fluorination, fluorinated graphite is prepared. This method requires higher temperature and longer fluorination time.

Method used

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  • Method for preparing carbon fluorine material
  • Method for preparing carbon fluorine material
  • Method for preparing carbon fluorine material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) 1g of petroleum coke is put into the reaction vessel, slowly feed nitrogen into the reaction vessel through the air inlet to make its internal pressure reach 0.1MPa, after holding the pressure for 24h, the pressure variation inside the reaction vessel is less than 5%, then The pressure of the reaction vessel is qualified, and the gas outlet of the reaction vessel is slowly opened to release the pressure so that the internal pressure drops to normal pressure;

[0030] (2) The air inlet of the reaction vessel is connected with the reaction gas source, and the gas outlet of the reaction vessel is connected with the container containing the aqueous sodium hydroxide solution; then, the temperature in the reaction vessel is controlled at 400° C., and the Fill the reaction gas, and the pressure in the reaction vessel is normal pressure. After continuously filling the reaction gas for 6 hours, the reaction will form CF x ; Wherein, the reaction gas is a mixed gas composed o...

Embodiment 2

[0036] (1) 1g of petroleum coke is put into the reaction vessel, slowly feed nitrogen into the reaction vessel through the air inlet to make its internal pressure reach 0.2MPa, after holding the pressure for 18h, the pressure variation inside the reaction vessel is less than 5%, then The pressure of the reaction vessel is qualified, and the gas outlet of the reaction vessel is slowly opened to release the pressure so that the internal pressure drops to normal pressure;

[0037] (2) The air inlet of the reaction vessel is connected with the reaction gas source, and the gas outlet of the reaction vessel is connected with the container containing the aqueous sodium hydroxide solution; then, the temperature in the reaction vessel is controlled at 380° C., and the Fill the reaction gas, and the pressure in the reaction vessel is normal pressure. After continuously filling the reaction gas for 8 hours, the reaction will form CF x ; Wherein, the reaction gas is a mixed gas composed o...

Embodiment 3

[0043](1) 1g of petroleum coke is put into the reaction vessel, slowly feed argon into the reaction vessel through the air inlet to make its internal pressure reach 0.2MPa, after holding the pressure for 15h, the pressure variation inside the reaction vessel is less than 5%, Then the pressure-holding of the reaction vessel is qualified, and the gas outlet of the reaction vessel is slowly opened to release the pressure so that the internal pressure is reduced to normal pressure;

[0044] (2) The air inlet of the reaction vessel is connected with the reaction gas source, and the gas outlet of the reaction vessel is connected with the container filled with potassium hydroxide aqueous solution; then, the temperature in the reaction vessel is controlled at 350° C. The reaction gas is filled in the medium, and the pressure in the reaction vessel is normal pressure. After continuously filling the reaction gas for 6 hours, the reaction forms CF x ; Wherein, the reaction gas is a mixed...

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Abstract

The invention relates to a method for preparing a carbon fluorine material and belongs to the field of lithium battery material preparation. According to the method, a specific carbon source is selected to react with a fluorine source, the fluorination temperature is low, the fluorination time is short, and the reaction is implemented at normal pressure, so that the safety of a fluorination process is improved, and the preparation cost of the carbon fluorine material is lowered; in addition, carbon fluorine prepared according to the method has a high fluorine-carbon ratio, that is, as high as0.8-1.2, and has good electrochemical properties.

Description

technical field [0001] The invention relates to a preparation method of carbon fluoride material, which belongs to the field of preparation of lithium battery materials. Background technique [0002] At present, the energy density of commercial lithium-ion batteries is low, and it is difficult to meet the requirements of high-energy-density power supplies for electrical equipment, especially the power supply for high-intensity individual combat systems. Therefore, the development of lithium batteries with ultra-high energy density, good stability and reliability has become an urgent research task. [0003] Lithium-carbon fluoride batteries have the advantages of ultra-high theoretical specific capacity, high stable discharge voltage, and low discharge rate, and are the first lithium primary batteries to be commercialized. In the military field, lithium-carbon fluoride batteries also have special applications, such as electric shock and fuze grenades. If ordinary batteries a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/10H01M4/58
CPCY02E60/10
Inventor 朱姜涛杨献奎徐海云户帅帅商洪涛李林王志民郑秋艳罗文键李柄缘
Owner PERIC SPECIAL GASES CO LTD
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