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A method for recovering supercapacity carbon

A supercapacitor carbon and supercapacitor technology, which is applied in the direction of chemical instruments and methods, hybrid capacitor electrodes, carbon compounds, etc., can solve the problems of supercapacitance carbon, scrapped supercapacitors, and low performance, and achieves simple operation and is suitable for promotion , the effect of good adsorption capacity

Active Publication Date: 2021-08-03
SHENZHEN GLOBAL GREENLAND NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, such as in the use of power vehicles, a large number of scrapped supercapacitors will be generated
Generally speaking, although the supercapacitor carbon in the scrapped supercapacitor can be recovered by certain methods, it is difficult for the recovered supercapacitor carbon to be used as electrode material again, or even if it can be used as other products (such as adsorbent ), but the performance is low and cannot meet the needs of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0079] Add 20 liters of water into a 50-liter polymerization kettle, heat to 30°C, add 11.5g of magnesium carbonate, 25g of gelatin and 0.20g of methylene blue under stirring, and add 3.5kg of methyl styrene, 1.2 kg dipentene and 24g benzoyl peroxide mixed oil phase, then add 1.2kg paraffin, close the polymerization kettle, feed clean compressed air into the polymerization kettle, and keep the gas phase pressure in the kettle at 0.05MPa. Then, start the stirring, adjust the liquid beads in the kettle to an appropriate particle size, raise the temperature to 80°C, keep the temperature for 12 hours, then raise the temperature to 110°C, keep the temperature for 24 hours, filter, wash, dry and sieve to obtain the white spherical polymer 2.54 kg, after testing, the BET of the product is 10.568m 2 / g.

[0080] 1.1 Carbonization

[0081] 2kg median particle size D 50 Put the above-mentioned white spherical polymer into a rotary tube furnace with a thickness of 0.8mm, and carry out...

Embodiment 1

[0094] The supercapacitor in Preparation Example 1 was disassembled, and the shells of the electrodes were taken out and recycled according to the classification of aluminum shells, steel shells and plastics. cut into 20mm 2Put the pole pieces of different sizes into a grinder for grinding until they are ground into powder, then pour the powder into a 300-mesh sieve, and put a large container underneath, so that the powder will fall into the container after sieving, and the aluminum foil will be separated; 15 wt% potassium hydroxide is added to the powder, stirred and soaked, the obtained mixed solution is centrifuged and filtered, washed with deionized water for several times, and dried at room temperature. Then soak in an ethanol solvent at room temperature, stir for 30 minutes, separate to obtain a suspension, and then perform centrifugal filtration on the obtained suspension to obtain 516 g of powder.

[0095] Under the condition of microwave irradiation with a power of 6...

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PUM

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Abstract

The invention belongs to the technical field of supercapacity carbon, and in particular relates to a method for recovering supercapacity charcoal. The method includes: S1) collecting scrapped supercapacitors, and obtaining the electrode sheets therein; S2) crushing or grinding the electrode sheets obtained in step S1); S3) passing the crushed or ground materials in step S2) over 200 ‑1000 mesh sieve, after sieving, the powder is obtained, and the aluminum foil is separated at the same time; S4) the powder obtained in the step S3) is mixed with an organic solvent or a mixed solution of an organic solvent and water, and the suspension is obtained by separation; S5) The suspension obtained in step S4) is centrifugally filtered to obtain a powder, which is soaked in an acidic solution under microwave irradiation and dried. The method of the invention can well recover the supercapacity carbon product in the waste supercapacitor, and the obtained product can still be used as an adsorbent to absorb harmful gas, so as to achieve the purpose of "turning waste into treasure".

Description

technical field [0001] The invention belongs to the technical field of supercapacity carbon, and in particular relates to a method for recovering supercapacity charcoal. Background technique [0002] A supercapacitor is a new type of energy storage device between traditional capacitors and secondary batteries, and its capacity can reach hundreds or even thousands of farads. Compared with traditional capacitors, it has higher energy density, larger capacity, wider operating temperature range and better service life; compared with secondary batteries, it has higher power density and longer cycle life, and no pollution to the environment. Due to its excellent energy density, power density and cycle life, supercapacitors are widely used in electronic toys, information products, household appliances, electric tools, electric vehicles, weapons and equipment, aerospace, power storage and other fields. [0003] Due to the characteristics of porous, high specific surface area, high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/36C01B32/378C01B32/336C01B32/348H01G11/34
CPCC01B32/336C01B32/348C01B32/36C01B32/378H01G11/34Y02E60/13
Inventor 常明珠
Owner SHENZHEN GLOBAL GREENLAND NEW MATERIALS CO LTD