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Preparation method of ultrahigh-stored energy electrical carbon material

A carbon material and energy storage technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of low specific surface area and adsorption performance of activated carbon, electric energy storage and specific surface area that cannot meet the development needs of high-energy automobile batteries, etc.

Inactive Publication Date: 2013-05-29
BEIJING ZHONGSHIHONG INSTALLATION ENG
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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

[0025] First, phenolic resin and urotropine are added to a high-speed crusher in a ratio of 100:3 by weight to be crushed into 100-325 mesh powder; the cellulose and fine powder with a weight of 8% of the weight of the phenolic resin are added together The high-speed mixer is used for mixing, and after mixing evenly, the material will automatically enter the twin-screw extruder for extrusion and granulation. The cooled pellets were input into the carbonization activation furnace for carbonization activation, and then the furnace temperature was raised to 300°C at a heating rate of 5°C / min, and then nitrogen gas was introduced to keep the constant temperature for 1.5 hours to carbonize the pellets, and then the pellets were carbonized at a temperature of 5°C / min. The heating rate of min is to raise the furnace temperature to 650°C and keep the constant temperature for 1.5 hours to carbonize the pellets. After turning off the nitrogen, mix carbon dioxide and water vapor according...

Embodiment 2

[0027] First, the mixture of phenolic resin and high softening point asphalt and urotropine are added to the high-speed crusher in a ratio of 100:4 by weight and crushed into 100-325 mesh powder; the weight is phenolic resin and high softening point asphalt 12% of the mixture weight of chlorinated polyethylene and fine powder are added to a high-speed mixer for mixing. After mixing evenly, the material will automatically enter the twin-screw extruder for extrusion and granulation. The parameters of the extruder are: internal temperature 180°C, back pressure 4 MPa, die hole diameter 5mm; input the collected cooling pellets into the carbonization activation furnace for carbonization activation, and then raise the temperature of the furnace to 320°C at a heating rate of 2°C / min and then pass it into Keep the nitrogen at a constant temperature for 1.9 hours to carbonize the pellets, then raise the furnace temperature to 610°C at a rate of 3°C / min and then keep the constant temperat...

Embodiment 3

[0029]First, the mixture of phenolic resin and high softening point asphalt and urotropine are added to the high-speed crusher in a ratio of 100:5 by weight and crushed into 100-325 mesh powder; the weight is phenolic resin and high softening point asphalt The weight of the mixture is 9% cellulose, plasticizer composed of chlorinated polyethylene, and fine powder are added to a high-speed mixer for mixing. After mixing evenly, the material is automatically fed into a twin-screw extruder for extrusion and granulation. The parameters of the machine are: internal temperature 220 ° C, back pressure 14 MPa, die hole diameter 2 mm; the collected cooling pellets are input into the carbonization activation furnace for carbonization activation, and then the furnace is heated at a heating rate of 3 °C / min. After the temperature was raised to 300°C, the pellets were carbonized by feeding nitrogen gas and kept at a constant temperature for 1.7 hours, then the furnace temperature was raised...

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Abstract

The invention discloses a preparation method of an ultrahigh-stored energy electrical carbon material, and the preparation method is carried out according to the following steps of: firstly crushing phenolic resin, high-softening point asphalt or a mixture of the phenolic resin and the high-softening point asphalt and a curing agent into fine powder, and then adding a plasticizer; then feeding a mixed material into a double-screw extruder for extrusion and granulation; then carbonizing and activating granular materials fed into a carbonization and activation furnace by stages, and then cooling and discharging under nitrogen protection; then placing carbon materials into an acid solution for boiling washing, and placing the pickled carbon materials into deionized water for boiling washing; and finally drying and crushing the carbon materials subjected to boiling washing to obtain the fine-powdery ultrahigh-stored energy electrical carbon material with needed particle size. The preparation method disclosed by the invention has the characteristics of simplicity, high efficiency, low cost and short period; and the prepared ultrahigh-stored energy electrical carbon material has the electrical energy storage amount of 140 coulombs / gram and the specific area of 2000-2500 square meters / gram and can be widely suitable for manufacturing a high-energy automobile accumulator and an ultrahigh-energy capacitor.

Description

technical field [0001] The invention relates to the field of preparation of activated carbon, in particular to a method for preparing an ultra-high energy storage electric carbon 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 th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 邹开良刘明秋
Owner BEIJING ZHONGSHIHONG INSTALLATION ENG
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