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Preparation method of high-performance flexible energy storage material

An energy storage material and high-performance technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problem that the electric energy storage and specific surface area cannot meet the development needs of high-energy automobile batteries, and the specific surface area and adsorption performance of activated carbon are low, etc. question

Inactive Publication Date: 2019-04-30
贾琳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low specific surface area and adsorption performance of conventional activated carbon, it cannot meet the growing needs of environmental protection, energy, high-efficiency energy storage media for natural gas and hydrogen, and high-tech fields, especially the current high-speed development of high-energy car batteries, super energy In the manufacturing process of capacitors, a large amount of energy-storage carbon materials are required. The parameters such as energy storage capacity and specific surface area of ​​energy-storage carbon materials produced by the current preparation process cannot meet the development needs of high-energy automobile batteries and super capacitors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, the polyurethane material and urotropine are added to the high-speed crusher in a ratio of 100:3 by weight and crushed into a powder of 100-325 mesh; the cellulose and the fine powder with a weight of 8% of the weight of the polyurethane material are added together The high-speed mixer is used for mixing, and after mixing evenly, the output material automatically enters the twin-screw extruder for extrusion and granulation. The parameters of the extruder are: internal temperature 150 ° C, back pressure 2 MPa, die hole diameter 4 mm; The cooled pellets are input into the carbonization activation furnace for carbonization activation, and then the furnace temperature is raised to 300°C at a heating rate of 5°C / min. Heating rate Raise the furnace temperature to 650°C and keep the constant temperature for 1.5 hours to carbonize the pellets. After closing the nitrogen gas, mix carbon dioxide and water vapor according to the volume ratio of 1.4:1. The ratio of activator...

Embodiment 2

[0018] First, the polyurethane material and urotropine are added to the high-speed crusher in a ratio of 100:8 by weight and crushed into 100-325 mesh powder; the weight is 5% of the weight of the polyurethane material and the fine powder is added together The high-speed mixer is used for mixing, and after mixing evenly, the output material automatically enters the twin-screw extruder for extrusion and granulation. The parameters of the extruder are: internal temperature 250 ° C, back pressure 16 MPa, die hole diameter 1 mm; The cooled pellets are input into the carbonization activation furnace for carbonization activation, and then the furnace temperature is raised to 350°C at a heating rate of 5°C / min, and then nitrogen gas is introduced to keep the constant temperature for 1.5 hours to carbonize the pellets, and then the pellets are carbonized at a heating rate of 3°C / min. Heating rate Raise the furnace temperature to 640°C and keep it at a constant temperature for 1.5 hours...

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Abstract

The invention discloses a preparation method of a high-performance flexible energy storage material, and the preparation method comprises the following steps: first a urethane material and asphalt-based carbon fiber or a mixture of the urethane material and the asphalt-based carbon fiber and a curing agent are crushed into fine powder, then a plasticizer is added, and then the mixed material is input into a double-screw extruder to be extruded and granulated; granules are fed into a carbonization activation furnace for staged carbonization activation in the carbonization activation furnace, after carbonization activation, cooling and discharging are performed under the protection of nitrogen; a carbon material is put into an acid solution for boiling and washing, and the acid-washed carbonmaterial is put into deionized water for boiling and washing; and finally the boiled and washed carbon material is dried and crushed to obtain the micro-powder high-performance flexible energy storage material with a required particle size. The preparation method disclosed by the invention is simple and efficient, and has the characteristics of low cost and short period, and the electric energy storage capacity of the prepared high-performance flexible energy storage material is larger than 140 coulomb / gram, the specific surface area is 2000-2500 m<2> / g, and the prepared high-performance flexible energy storage material can be widely applied to the manufacturing of high-energy automobile batteries and super-energy capacitors.

Description

technical field [0001] The invention relates to the field of preparation of activated carbon, in particular to a preparation method of a high-performance flexible energy storage material with large electric energy storage and high specific surface area. Background technique [0002] Activated carbon has a well-developed pore structure and a huge specific surface area, and has been used in medicine and food since ancient times. Subsequently, it has also been widely used as a high-quality adsorbent and catalyst carrier in the fields of industry, national defense, agriculture, medicine and health, environmental protection and energy. However, due to the low specific surface area and adsorption performance of conventional activated carbon, it cannot meet the growing needs of environmental protection, energy, high-efficiency energy storage media for natural gas and hydrogen, and high-tech fields, especially the current high-speed development of high-energy car batteries. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/336C01B32/312H01M4/583H01G11/34
CPCC01P2006/12C01P2006/40H01G11/34H01M4/583Y02E60/10
Inventor 贾琳
Owner 贾琳
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