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Production technology of activated carbon for high-capacity long-service-life supercapacitor

A technology for the production of supercapacitors and activated carbons, which is applied in the fields of hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, chemical instruments and methods, etc. Effect

Inactive Publication Date: 2017-07-07
NANPING YUANLI ACTIVE CARBON CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the disadvantages of low capacitor capacity, large leakage current and short service life of the prior art, and to solve the above technical problems, the present invention provides a production process of activated carbon for high-capacity and long-life supercapacitors. First, carbonization is obtained by pretreatment In the activation process, microwave activation is used to obtain activated carbon with high specific surface area, and then metal impurities are washed away by super washing method, and finally high-quality activated carbon is obtained after microwave heat treatment is used to remove surface functional groups

Method used

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  • Production technology of activated carbon for high-capacity long-service-life supercapacitor

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Embodiment 1

[0025] In order to solve the above-mentioned technical problems, the first embodiment provides such a production process of activated carbon for high-capacity and long-life supercapacitors, the process flow includes pretreatment, activation, washing, acid leaching, drying, grinding and mixing, such as figure 1 As shown, it specifically includes the following steps:

[0026] a. Pretreatment: Send 15Kg of carbonized raw materials (husks, charcoal or petroleum coke) to a pulverizer for preliminary crushing. During the crushing process, spray an ammonia solution with a mass fraction of 13%, the ammonia solution and the carbonized raw material The mass ratio is 1:15. After the crushing process is completed, the carbonized raw material and the KOH solution with a mass fraction of 27% are mixed and pretreated in a reaction tank at a temperature of 300°C for 3 hours at a mass ratio of 1:2.6. Obtain carbonized material;

[0027] b. Activation: After the carbonized material is fully kn...

Embodiment 2

[0035] A production process of activated carbon for high-capacity and long-life supercapacitors, the process flow includes pretreatment, activation, washing, acid leaching, drying, grinding and mixing, such as figure 1 As shown, it specifically includes the following steps:

[0036] a. Pretreatment: Send 15Kg of carbonized raw materials (husks, charcoal or petroleum coke) to a pulverizer for preliminary crushing. During the crushing process, spray an ammonia solution with a mass fraction of 14%, the ammonia solution and the carbonized raw material The mass ratio is 1:18. After the crushing process is completed, the carbonized raw material and the KOH solution with a mass fraction of 28% are mixed and pretreated in a reaction tank at a temperature of 350°C for 4.5 hours according to a mass ratio of 1:2.7. , to obtain carbonized material;

[0037] b. Activation: After the carbonized material is fully kneaded and solidified, the carbonized material is delivered to the microwave ...

Embodiment 3

[0045] A production process of activated carbon for high-capacity and long-life supercapacitors, the process flow includes pretreatment, activation, washing, acid leaching, drying, grinding and mixing, such as figure 1 As shown, it specifically includes the following steps:

[0046] a. Pretreatment: Send 15Kg of carbonized raw materials (husks, charcoal or petroleum coke) to a pulverizer for preliminary crushing. During the crushing process, spray an ammonia solution with a mass fraction of 15%, the ammonia solution and the carbonized raw material The mass ratio is 1:20. After the pulverization process is completed, the carbonized raw material and the KOH solution with a mass fraction of 29% are stirred and pretreated in a reaction tank at a temperature of 400°C for 6 hours at a mass ratio of 1:2.8. Obtain carbonized material;

[0047] b. Activation: After the carbonized material is fully kneaded and solidified, the carbonized material is delivered to the microwave reaction f...

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Abstract

The invention discloses a production technology of activated carbon for a high-capacity long-service-life supercapacitor, belonging to the technical field of activated carbon preparation technology. The production technology comprises the following technology flow: pretreatment, activation, washing, acid soaking, drying, grinding and mixing. Aiming at solving the defects that the capacitor of the prior art is low in capacity, large in leaked current and short in service life, the production technology comprises the following steps: firstly, pretreating to obtain carbonized materials, activating by adopting a microwave activation manner to obtain activated carbon with high specific surface area, washing metal impurities by adopting a super-washing manner, and performing microwave thermal treatment to remove surface functional groups to obtain high-quality activated carbon. The electric capacity of the activated carbon obtained by adopting the technology is larger than that of the carbon adopting abroad imported alkaline, the service life is longer than that of the carbon adopting abroad imported alkaline, and the attenuation rate is lower.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation technology, in particular to an activated carbon production process for high-capacity and long-life supercapacitors. Background technique [0002] A supercapacitor is a green energy device with no pollution and zero emissions. Its energy storage performance is between secondary batteries and traditional electrostatic capacitors, and it has the characteristics of high power density, high energy density and long life. The technological development of new energy and pollution-free capacitors meet the current industrial requirements. Supercapacitors have been applied in many fields such as electric vehicles, wind energy, smart grids, and backup power supplies. [0003] The key factor affecting the performance of a supercapacitor is the electrode of the supercapacitor, and the performance of the electrode is mainly related to two aspects, one is the characteristics of the raw mater...

Claims

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Application Information

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IPC IPC(8): C01B32/312C01B32/336C01B32/378H01G11/34H01G11/86
CPCH01G11/34H01G11/86Y02E60/13
Inventor 肖志良吴罗金卢亨俊游贵明
Owner NANPING YUANLI ACTIVE CARBON CO LTD
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