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Resource recycling method for super capacitor

A supercapacitor and recycling method technology, applied in the field of energy materials, can solve the problems of not considering removal, large metal ion impurities, not considering environmental impact treatment methods, etc., to achieve the effect of environmental friendliness and high purity

Inactive Publication Date: 2016-01-13
NINGBO CRRC NEW ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] About the reclaiming method of supercapacitor and its electrode material, existing report in the prior art, disclose a kind of reclaiming method of supercapacitor and its electrode material as Chinese invention patent (publication number: CN103915263A), but there is serious deficiency in this patent, its The disposal method of electrolyte or organic solvent, which has the greatest impact on the environment, is not considered, because this is the most important point to realize the harmless disposal of supercapacitors
In addition, it does not consider removing residual aluminum foil and aluminum scraps when recycling electrode powder materials, which will introduce a large amount of metal ion impurities, making the recycled electrode powder materials unsuitable for the manufacture of supercapacitors

Method used

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  • Resource recycling method for super capacitor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] refer to figure 1 The flow chart of the resource recycling method of supercapacitors. First, the supercapacitors are short-circuit discharged. After the discharge, the supercapacitor monomers are disassembled to obtain the important components of the supercapacitor monomers such as electrode sheets, batteries, casings, lead-out terminals, and diaphragms. Parts, separate recycling.

[0029] Then control the temperature of the cell in it to 100°C to distill off the solvent acetonitrile.

[0030] Cut the electrode sheet into less than 5cm 2 The fragments are ground and the electrode powder falls off from the aluminum foil, and then sieved through a sieve with a pore size of 100 mesh to separate the aluminum foil and electrode powder and recycle the aluminum foil. The electrode powder is washed with deionized water, and the upper layer aqueous solution and the washed electrode powder are separated by filtration with filter paper. The separated upper aqueous solution is d...

Embodiment 2

[0032] refer to figure 1 The flow chart of the resource recycling method of supercapacitors. First, the supercapacitors are short-circuit discharged. After the discharge, the supercapacitor monomers are disassembled to obtain the important components of the supercapacitor monomers such as electrode sheets, batteries, casings, lead-out terminals, and diaphragms. Parts, separate recycling.

[0033] Then control the temperature of the cell in it to 100°C to distill off the solvent acetonitrile.

[0034] Cut the electrode sheet into less than 5cm 2 The fragments are ground and the electrode powder falls off from the aluminum foil, and then sieved through a sieve with a pore size of 100 mesh to separate the aluminum foil and electrode powder and recycle the aluminum foil. The electrode powder was washed with deionized water, and the upper aqueous solution and the washed electrode powder were separated by filtration with filter paper, and repeated once. The separated upper aqueou...

Embodiment 3

[0036] refer to figure 1 The flow chart of the resource recycling method of supercapacitors. First, the supercapacitors are short-circuit discharged. After the discharge, the supercapacitor monomers are disassembled to obtain the important components of the supercapacitor monomers such as electrode sheets, batteries, casings, lead-out terminals, and diaphragms. Parts, separate recycling.

[0037] Then control the temperature of the cell in it to 100°C to distill off the solvent acetonitrile.

[0038] Cut the electrode sheet into less than 5cm 2 The fragments are ground and the electrode powder falls off from the aluminum foil, and then sieved through a sieve with a pore size of 100 mesh to separate the aluminum foil and electrode powder and recycle the aluminum foil. The electrode powder was washed with deionized water, and the upper aqueous solution and the washed electrode powder were separated by filtration with a non-woven fabric, and repeated 3 times. The separated upp...

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Abstract

The invention relates to a resource recycling method for a super capacitor and belongs to the technical field of energy materials. The recycling method includes the steps that a super capacitor single body completing discharging is demounted to obtain a cell and an electrode plate; the cell is distilled to obtain an electrolyte solvent; the electrode plate is sheared, ground and screened, then electrode powder and aluminum foil are obtained through separation. The electrode powder is washed through deionized water, an upper-layer water solution and the washed electrode powder are separated, an alkaline water solution is added to the washed electrode power for washing again, and finally, the electrode powder is activated at a high temperature and a recycled electrode powder material is obtained. According to the recycling method, the innocent treatment of the waste super capacitor single body is ensured, meanwhile, the main materials composing the single body are recycled effectively on the basis that harmful substances such as an organic solvent are not introduced, environment friendliness of the whole-life cycle of the super capacitor is achieved, and the reuse value of main materials such as electrodes and electrolytes is improved.

Description

technical field [0001] The invention relates to a method for harmless treatment of energy storage devices and a method for recycling raw materials, in particular to a method for resource recycling of supercapacitors, which belongs to the technical field of energy materials. Background technique [0002] Electrochemical double-layer capacitors, also known as supercapacitors, extreme capacitors, etc., are new energy storage devices between secondary batteries and traditional electrostatic capacitors. They have higher energy density than traditional electrostatic capacitors and higher energy density than secondary batteries. Batteries have greater power density. It has the advantages of high power density, long cycle life, wide operating temperature range, good cycle stability, maintenance-free, and environmental friendliness. a broad application prospect. [0003] A supercapacitor is mainly composed of an electrode composed of activated carbon and an electrolyte composed of ...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00
Inventor 阮殿波左飞龙乔志军
Owner NINGBO CRRC NEW ENERGY TECH CO LTD
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