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Manufacturing method of super capacitor

A technology of supercapacitor and manufacturing method, applied in the field of supercapacitor and supercapacitor manufacturing, can solve the problems of low bonding strength of pole pieces, low bonding strength of collector and pole piece, etc., and achieve the effect of good capacity stability

Inactive Publication Date: 2014-01-22
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

[0004] 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

[0024] The composite binder used in this embodiment is formed by mixing substances with the following general formula (1) structure and polytetrafluoroethylene:

[0025] (CH3) n (SiOSiOSi) m C3H6O(C p h 2p OH) (1)

[0026] where m=5, n=35, p=5

[0027] The content of each component in the composite binder is based on the mass ratio, the substance of the general formula (1) is 20%, and the polytetrafluoroethylene is 80%.

[0028] (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;

[0029] (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 95%, and the conductive mate...

Embodiment 2

[0039] The composite binder used in this embodiment is formed by mixing substances with the following general formula (1) structure and polytetrafluoroethylene:

[0040] (CH3) n (SiOSiOSi) m C3H6O(C p h 2p OH) (1)

[0041] where m=10, n=70, p=10

[0042] The content of each component in the composite binder is based on the mass ratio, the substance of the general formula (1) is 25%, and the polytetrafluoroethylene is 75%.

[0043] (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;

[0044] (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 94%, and the conductive ma...

Embodiment 3

[0054] The composite binder used in this embodiment is formed by mixing substances with the structure of general formula (1) and polytetrafluoroethylene:

[0055] (CH3) n (SiOSiOSi) m C3H6O(C p h 2p OH) (1)

[0056] where m=15, n=105, p=15

[0057] The content of each component in the composite binder is based on the mass ratio, the substance of the general formula (1) is 25%, and the polytetrafluoroethylene is 75%.

[0058] (1) Prepare the collector: the surface of the aluminum alloy is roughened by AC corrosion to obtain a collector with a thickness of 20 μm and a roughness of 2 μm on one side;

[0059] (2) Preparation of pole piece: mix the active material and the conductive material evenly, dissolve the composite binder in acetone 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 95%, and ...

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PUM

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Abstract

The invention relates to a manufacturing method of a super capacitor, which belongs to the technical field of new energy storage. The surface of a metal collector electrode is roughed, active material, conductive material and a compound adhesive are mixed uniformly and pressed into a pole piece with the thickness of 100-150 mum, the pole piece is stuck onto the surface of the collector electrode to form a band-shaped electrode, the electrode is cut into two electrodes with the same size, and after the two electrodes are riveted with a leading wire, an electrode diaphragm with the thickness of 10-50 mum is added to be wound into a core, the core is dried in vacuum for 8-72 hours at the temperature of 100-150 DEG C, then is soaked in an organic electrolyte and electrified for 10 hours at the temperature of 50 DEG C and the direct current voltage of 2.7V, and finally is packaged in a circular aluminum shell to obtain a super capacitor product, wherein the compound adhesive is the mixture of the substance with the general formula of (CH3) n (SiOSiOSi) mC3H6O (CpH2pOH) and polytetrafluoroethylene. The electrode manufactured by the compound adhesive disclosed by the invention is soft, has large mechanical strength and is easy for large-scale continuous production, and the service life is greatly prolonged.

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 a supercapacitor. Background technique [0002] Supercapacitors, also known as electric double layer capacitors, are a new type of environmentally friendly energy storage components. The basic principle of supercapacitors is to use the electric double layer structure composed of active material porous electrodes and electrolyte to obtain super large capacity, so its energy storage mechanism is physical energy storage without involving chemical reactions, which means that supercapacitors have hundreds of thousands or even tens of thousands of Millions of charge-discharge cycle life. The charge storage area of ​​traditional capacitors is a simple plane, while supercapacitors use active materials as positive and negative electrodes, use their large specific surface area to increase the storage capacity of charge...

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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