Supercapacitor that can be easily dismantled and recycled, manufacturing method and dismantling and recycling method

A technology of supercapacitor and recycling method, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor collectors, etc., and can solve the problems of electrode materials and collectors that are difficult to disassemble and recycle, environmental pollution, resource waste, etc. , to achieve low internal resistance, high volumetric energy density, and improved recovery

Active Publication Date: 2022-07-12
ZHONGTIAN ENERGY STORAGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the adhesive, after the capacitor fails, the electrode material and the current collector (and the adsorbed electrolyte) are difficult to disassemble and recycle, resulting in certain environmental pollution and waste of resources.

Method used

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  • Supercapacitor that can be easily dismantled and recycled, manufacturing method and dismantling and recycling method
  • Supercapacitor that can be easily dismantled and recycled, manufacturing method and dismantling and recycling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 1 As shown, the electrode material 1 (carbon nanotubes with a particle size of 30 microns) was made into a slurry 2 according to a conventional method; by extrusion, it was filled into the metal current collector 3 (aluminum, the void size was In the gap of 10 times the maximum particle size of the electrode material), a composite pole piece 4 of the electrode material and the current collector is formed, and the two are in close contact by rolling to form a rolled composite pole piece 5. The rolled composite pole piece 5 is welded to the pole lug 9, separated by a diaphragm 6, and assembled in multiple pieces. The shell 7 of the aluminum plastic film is punched and formed, and the gas or liquid passage 10 is left on it. The assembled pole piece is encapsulated in the shell of the outer casing 7, and after dehydration, degassing and aging steps, the electrolyte 8 (ionic liquid) is injected, and then encapsulated to form a capacitor product. In normal use, ...

Embodiment 2

[0038] like figure 1 As shown, the electrode material 1 (manganese oxide and graphene, the mass fraction is 1:1, the particle size is 0.1 microns) is made into slurry 2 according to the conventional method; In the gap of the current collector 3 (platinum, the void size is 50 times the maximum particle size of the electrode material), a composite pole piece 4 of the electrode material and the current collector is formed, and the two are in close contact by rolling to form a roller. Press the composite pole piece 5. The rolled composite pole piece 5 is welded to the pole lug 9, separated by a diaphragm 6, and assembled in multiple pieces. The outer shell 7 of the stainless steel shell is stamped and formed, and a gas or liquid passage 10 is left on it. The assembled pole piece is encapsulated in the shell of the casing 7, and after dehydration, degassing and aging steps, the electrolyte 8 (KOH aqueous electrolyte) is injected, and then encapsulated to form a capacitor product....

Embodiment 3

[0041] like figure 1 As shown, the electrode material 1 (activated carbon, graphene, carbon nanofibers, mass ratio of 1:0.2:0.5, particle size 20 microns) was made into slurry 2 according to a conventional method; Filled into the gap of the metal current collector 3 (copper, the void size is 40 times the maximum particle size of the electrode material) to form a composite pole piece 4 of the electrode material and the current collector, and rolled to make the two close together contact to form a rolled composite pole piece 5 . The rolled composite pole piece 5 is welded to the pole lug 9, separated by a diaphragm 6, and assembled in multiple pieces. The copper casing 7 is stamped and formed, leaving a gas or liquid passage 10 on it. The assembled pole piece is encapsulated in the shell of the outer casing 7, and after dehydration, degassing and aging steps, the electrolyte 8 (organic electrolyte) is injected, and then encapsulated to form a capacitor product. In normal use,...

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Abstract

A supercapacitor that can be easily disassembled and recycled, a preparation method and a disassembled and recycled supercapacitor, the supercapacitor includes an electrode material, an electrolyte, a diaphragm, a foam metal current collector, a casing and a gas or liquid passage connected to the casing; the present invention It also discloses its manufacturing method, which mainly includes a molding method for making the electrode and the current collector in close contact without adhesive; at the same time, a dismantling and recycling method of the capacitor is also disclosed, including injecting a solvent through a liquid channel on the casing, and connecting the electrode with the electrode. The material and electrolyte form a liquid-solid mixture, and the method is extracted from the capacitor; this method can make the recovery rate of electrode material, electrolyte, current collector and diaphragm greater than 98%, and has the advantages of low recovery cost, safety and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor preparation, and in particular relates to a supercapacitor that can be easily disassembled and recycled, a manufacturing method and a disassembly and recycling method. Background technique [0002] Electric double-layer supercapacitors have the advantages of fast charging, long life, and high power density. They play an irreplaceable role in recovering energy from starting and braking of heavy locomotives and large machinery. The recent development trend is to use carbon nanomaterials as electrode materials to replace activated carbon electrode materials, and to operate at higher voltage (3V) in order to obtain higher energy density to expand the application field of supercapacitors. [0003] The most traditional capacitor structure is that the electrode material is attached to the metal plate current collector, then the tabs are welded, separated by a diaphragm, and electrolyte is injected...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/28H01G11/24H01G11/70H01G11/78H01G11/46H01G11/36H01G11/34H01G11/84
CPCH01G11/24H01G11/28H01G11/34H01G11/36H01G11/46H01G11/70H01G11/78H01G11/84Y02E60/13
Inventor 骞伟中薛济萍田佳瑞薛驰杨周飞金鹰谢青缪永华李敏徐洲于翔杨奕菲
Owner ZHONGTIAN ENERGY STORAGE TECH
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