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Preparation method of activated carbon for capacitor

A technology for activated carbon and capacitors, which is applied in the field of preparation of activated carbon for capacitors, and achieves the effect of low cost and simple preparation method

Inactive Publication Date: 2016-06-22
NINGGUO WANQUAN ELECTRIC APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this has high requirements for the preparation method of activated carbon and the performance of activated carbon. The existing preparation methods mostly use relatively compact wood as raw materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A preparation method for activated carbon for capacitors, comprising the following steps:

[0013] (1) Under the protection of argon, heat the coconut shell at 268°C for 35 minutes, slowly raise the temperature to 552°C, the temperature rise rate is 4.2°C / min, and keep it warm for 18 minutes. During the heat preservation process, keep the flow of argon and circulate the argon. The speed is 0.2m / s, and then the temperature is slowly lowered to normal temperature, and the cooling range is 3°C / min to obtain coconut shell charcoal;

[0014] (2) Soak the coconut shell charcoal processed in step (1) with 0.2M phosphate buffer for 3 hours, and treat it under a magnetic field of 0.05T within 1 hour before soaking, then cancel the magnetic field, and oscillate under ultrasonic conditions processing, ultrasonic intensity is 32KHz;

[0015] (3) Take out the coconut shell charcoal, dry it at 76° C., then heat the coconut shell charcoal at 625° C. for 2 minutes under nitrogen prote...

Embodiment 2

[0017] A preparation method for activated carbon for capacitors, comprising the following steps:

[0018] (1) Under the protection of argon, heat the coconut shell at 268°C for 35 minutes, slowly raise the temperature to 552°C, the temperature rise rate is 4.2°C / min, and keep it warm for 18 minutes. During the heat preservation process, keep the flow of argon and circulate the argon. The speed is 0.2m / s, and then the temperature is slowly lowered to normal temperature, and the cooling range is 3°C / min to obtain coconut shell charcoal;

[0019] (2) Soak the coconut shell charcoal processed in step (1) in 0.2M phosphate buffer solution for 3 hours. Metal nickel is placed in the phosphate buffer solution, and it is treated under a magnetic field of 0.05T within 1 hour before soaking. Then cancel the magnetic field, and perform vibration treatment under ultrasonic conditions, and the ultrasonic intensity is 32KHz;

[0020] (3) Take out the coconut shell charcoal, dry it at 76° C....

Embodiment 3

[0022] A preparation method for activated carbon for capacitors, comprising the following steps:

[0023] (1) Under the protection of argon, heat the coconut shell at 270°C for 38 minutes, slowly raise the temperature to 550°C, the temperature rise rate is 4.2°C / min, and keep the heat for 17.5 minutes. During the heat preservation process, keep argon flow and argon circulation The speed is 0.2m / s, and then the temperature is slowly lowered to normal temperature, and the cooling range is 3°C / min to obtain coconut shell charcoal;

[0024] (2) Soak the coconut shell charcoal processed in step (1) in 0.2M phosphate buffer for 3 hours, place a metal nickel rod in the phosphate buffer, and treat it under a magnetic field of 0.05T within 1 hour before soaking , and then withdraw the magnetic field, and carry out vibration treatment under ultrasonic conditions, and the ultrasonic intensity is 32KHz;

[0025] (3) Take out the coconut shell charcoal, dry it at 80° C., then heat the coc...

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Abstract

The invention relates to a preparation method of activated carbon for a capacitor. The preparation method comprises the following steps: (1) coconut shells are subjected to heat preservation processing for 35-38 min under argon protection at the temperature of 265-270 DEG C, the temperature is increased slowly to 550-560 DEG C and then reduced slowly to the room temperature, the temperature reducing rate is 3 DEG C / min, and coconut shell charcoal is obtained; (2) the well processed coconut shell charcoal in the step (1) is subjected to soaking treatment with 0.2 M phosphate buffer for 3 h and is processed in a 0.05 T magnetic field within 1 h before soaking, then the magnetic field is removed, vibration processing is performed under an ultrasonic condition, and the ultrasonic intensity is 32 KHz; (3) the coconut shell charcoal is taken out, dried at 75-80 DEG C and subjected to heat preserving processing for 2 min under nitrogen protection at 625-628 DEG C, the temperature is reduced naturally to the room temperature, and the activated carbon for the capacitor is obtained after cleaning. The preparation method of the activated carbon for the capacitor adopts the coconut shells as the raw material and is low in cost and simple.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method for preparing activated carbon for capacitors. Background technique [0002] Capacitors are widely used in electronics and other industries. Now many high-end capacitors use activated carbon as the electrode material. Supercapacitor activated carbon is usually called super activated carbon or carbon electrode material. It has a large specific surface area, concentrated pores, low ash, and good conductivity. And other characteristics, suitable for manufacturing high-performance batteries, electric double layer capacitor products and carriers for heavy metal recovery. However, this has high requirements for the preparation method of activated carbon and the performance of activated carbon. The existing preparation methods mostly use relatively compact wood as raw materials. Contents of the invention [0003] The purpose of the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08
CPCC01P2006/12C01P2006/14C01P2006/40
Inventor 丁绪胜
Owner NINGGUO WANQUAN ELECTRIC APPLIANCE CO LTD
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