Manufacture method of super capacitor

A technology for supercapacitors and manufacturing methods, which is applied in the manufacture of hybrid/electric double layer capacitors, etc., which can solve the problems of low bond strength between collectors and pole pieces, and low bond strength of pole pieces, so as to achieve easy continuous production and mechanical The effect of high strength and soft electrode

Inactive Publication Date: 2014-04-09
锦州凯美能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the current production technology of supercapacitors, the present invention provides a method for manufacturing supercapacitors, which solves the problems of low bonding strength between collectors and pole pieces and small internal bonding strength of pole pieces, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The composite binder used in this embodiment is formed by mixing substances with the following general formula (1) and polytetrafluoroethylene:

[0024] [NH-R-CO-R-CO] x (1)

[0025] where x=100, R:C 2 h 4 , n=2

[0026] The content of each component in the composite binder is based on the mass ratio, the substance of the general formula (1) is 30%, and the polytetrafluoroethylene is 70%.

[0027] (1) Prepare the collector: roughen the metal aluminum surface by AC corrosion to obtain a collector with a thickness of 30 μm and a roughness of 3 μm on one side;

[0028] (2) Preparation of pole piece: mix the active material and conductive material evenly, dissolve the composite binder in isopropanol and disperse evenly to form a composite binder solution, add it to the above mixed materials and disperse evenly to form a mixture , wherein by mass percentage, the composite binder content is 2%, the active material is 92%, and the conductive material is 6%, and t...

Embodiment 2

[0038] The composite binder used in this embodiment is formed by mixing substances with the following general formula (1) and polytetrafluoroethylene:

[0039] [NH-R-CO-R-CO] x (1)

[0040] where x=200, R:C 3 h 6 , n=3

[0041] The mass ratio of each component in the composite binder is: 35% of the substance of the general formula (1), and 65% of polytetrafluoroethylene.

[0042] (1) Prepare the collector: roughen the surface of the aluminum alloy by AC corrosion to obtain a collector with a thickness of 30 μm and a roughness of 3 μm on one side;

[0043] (2) Preparation of pole piece: mix the active material and conductive material evenly, dissolve the composite binder in isopropanol and disperse evenly to form a composite binder solution, add it to the above mixed materials and disperse evenly to form a mixture , wherein by mass percentage, the composite binder content is 2%, the active material is 91%, and the conductive material is 7%, and then the above mixt...

Embodiment 3

[0053] The composite binder used in this embodiment is formed by mixing substances with the following general formula (1) structure and polytetrafluoroethylene:

[0054] [NH-R-CO-R-CO] x (1)

[0055] where x=300, R:C 4 h 8 , n=4

[0056] The mass ratio of each component in the composite binder is: 40% of the substance of the general formula (1), 60% of polytetrafluoroethylene.

[0057] (1) Prepare the collector: conduct AC corrosion roughening on the surface of the metal aluminum to obtain a collector with a thickness of 20 μm and a roughness of 2 μm on one side;

[0058] (2) Preparation of pole piece: mix the active material and the conductive material evenly, dissolve the composite binder in ethanol and disperse evenly to form a composite binder solution, add it to the above-mentioned mixed materials and disperse evenly to form a mixture, wherein By mass percentage, the composite binder content is 1.5%, the active material is 92.5%, and the conductive material...

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Abstract

A manufacture method of a super capacitor belongs to the technical field of new energy accumulation and includes conducting roughness processing on the surface of a metal collector, evenly mixing active materials, conductive materials and composite adhesive, pressing the mixture into a pole piece with the thickness between 30 micrometer to 100 micrometer, bonding the pole piece to the surface of the collector to form a belt pole, cutting the belt pole into two poles identical in size, enabling the two poles to be riveted with a wire, adding a pole separation film with the thickness between 10 micrometer to 15 micrometer, winding the film to form a core, drying the core for 8 to 72 hours under the temperature of 100 DEG C to 150 DEG C in vacuum mode, immersing the core in organic electrolyte, electrifying the electrolyte for 10 hours through 2.7V direct current voltage under 50 DEG C temperature, and packaging the core in a round aluminum casing to obtain a product of the super capacitor. The composite adhesive is a mixture of a substance with [NH-R-CO-R-CO]x formula and teflon. Poles manufactured by the composite adhesive are flexible, high in mechanical strength, easy to produce continuously in large scale and substantially longer in service life.

Description

technical field [0001] The invention belongs to the technical field of new energy storage, and relates to a supercapacitor, in particular to a method for manufacturing the supercapacitor. Background technique [0002] The two important parts of a supercapacitor are the electrode and the electrolyte. The energy storage principle is to form an electric double layer at the interface between the electrode and the electrolyte to accumulate charge and store energy. In order to increase the energy density, the active materials of the electrodes are usually activated carbon, carbon black, carbon nanotubes, graphene, expanded graphite, metal oxides, and conductive polymers. Materials such as high-purity aluminum, stainless steel, and nickel that are resistant to chemical and electrochemical corrosion, and low-resistance coatings such as metal and graphite are also commonly bonded to the collector. The electrolyte includes water-soluble electrolyte and organic electrolyte. Among them...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/84H01G11/86
CPCY02E60/13
Inventor 李文生姚健勋刘永久常亮
Owner 锦州凯美能源有限公司
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