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Method of manufacturing a supercapacitor

A technology of supercapacitor and manufacturing method, which is applied in the manufacture of hybrid/electric double-layer capacitors, etc., can solve the problems of increased internal resistance of capacitors, capacity attenuation, easy delamination of coatings and corroded aluminum foils, and weak coating adhesion. To achieve the effect of high density, high energy density, high power density

Active Publication Date: 2013-11-27
NINGBO CRRC NEW ENERGY TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the weak adhesion of the coating in the prior art, the coating is easy to drop powder when the electrode is bent or punched in the subsequent process; the coating and the corroded aluminum foil are easy to delaminate, and the internal resistance of the capacitor increases and the capacity Insufficient attenuation provides a method for manufacturing supercapacitors with high reliability, high power density, and high energy density

Method used

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  • Method of manufacturing a supercapacitor
  • Method of manufacturing a supercapacitor
  • Method of manufacturing a supercapacitor

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0060] Such as figure 1 The illustrated embodiment is a method of manufacturing a supercapacitor, comprising the steps of:

[0061] Step 100, preparation of conductive binder: according to the ratio of deionized water and carboxymethylcellulose binder mass ratio of 50:1, put deionized water and carboxymethylcellulose binder into the mixer Stir in the storage tank for 40 minutes to fully integrate the deionized water and carboxymethyl cellulose binder;

[0062] According to the mass ratio of graphene and the carboxymethylcellulose binder in the storage tank is the ratio of 1:0.5, graphene is dropped in the storage tank of stirrer, and stir 40 minutes;

[0063] According to the mass ratio of conductive carbon black and the carboxymethyl cellulose binder in the storage tank is the ratio of 25: 1, drop into conductive carbon black in the blender,...

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Abstract

The invention discloses a method of manufacturing a supercapacitor. According to the invention, corrosion aluminum foil is first coated with a conductive adhesive, and the conductive adhesive is then coated with electrode paste. The presence of the conductive adhesive allows the electrode paste to be stably pasted on the corrosion aluminum foil. The electrode provided by the invention can withstand pressing under the pressure from 150t to 200t without the electrode paste layer falling off and being deformed, and the density of the electrode paste layer can reach between 0.65 to 0.70. The supercapacitor manufactured by the method has the characteristics of high reliability, power density, energy density and safety without the proneness of explosion.

Description

technical field [0001] The invention relates to the technical field of capacitor manufacturing, in particular to a method for manufacturing a supercapacitor with high reliability, high power density and high energy density. Background technique [0002] The usual supercapacitor electrode manufacturing process uses the prepared slurry to be directly coated on a corroded aluminum foil. The disadvantage of this process is that the coating adhesion is not strong. In the bending or punching process of the subsequent process , The electrode slurry layer is easy to drop powder, and the electrode slurry layer and the corroded aluminum foil are easy to delaminate during the charging and discharging process; as the use time increases, the internal resistance of the capacitor gradually increases, and the capacitor capacity gradually decays. [0003] Chinese Patent Authorization Publication No.: CN102543481A, authorized publication date July 4, 2012, discloses a method for manufacturing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/86
CPCY02E60/13
Inventor 阮殿波陈照荣张洪权傅冠生陈照平于智强
Owner NINGBO CRRC NEW ENERGY TECH CO LTD
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