Method for manufacturing 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 poor product quality of supercapacitors, inconsistent coating thickness of electrode slurry, etc. Consistent, easy viscosity control results

Active Publication Date: 2013-09-11
NINGBO CRRC NEW ENERGY TECH CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The present invention is to overcome the problem that the viscosity of the binder used in the prior art changes with the time and temperature of the storage, resulting in inconsistent coating thickness of the electrode slurry and further leading to poor quality of the supercapacitor product, and provides A method for manufacturing a supercapacitor with high reliability, high power density, and high energy density

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  • Method for manufacturing super capacitor
  • Method for manufacturing super capacitor
  • Method for manufacturing super capacitor

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0052] like figure 1 The illustrated embodiment is a method of manufacturing a supercapacitor, comprising the steps of:

[0053] Step 100, electrode slurry preparation:

[0054] According to the ratio of deionized water to polyurethane mass ratio of 20:1, put deionized water and polyurethane into a mixer and stir for 35 minutes to obtain a water-emulsion adhesive;

[0055] According to the mass ratio of activated carbon powder and polyurethane in the binder of 15:1, put activated carbon powder into the kneader and stir for 30 minutes to obtain a dough-like electrode slurry pre-finished product;

[0056] The electrode slurry pre-finished product is put into the stirring tank of mixer, according to the mass ratio of deionized water and the polyurethane in the binder is the ratio of 70: 1, adds deionized water again in stirring tank; 200pa to 3...

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Abstract

The invention discloses a method for manufacturing a super capacitor. The method for manufacturing the super capacitor comprises the step of electrode slurry preparation, wherein the electrode slurry preparation comprises the following steps that deionized water and polyurethane are placed into a planetary mixer to be mixed, and a binding agent blended well like water and milk is obtained; the binding agent is placed into a kneading machine, acetylene black is placed into the kneading machine, and the binding agent and the acetylene black are mixed in the kneading machine; activated carbon powder is put into the kneading machine to be stirred for 20-40 minutes to obtain paste-shaped pre-finished electrode slurry; the pre-finished electrode slurry is put into a stirring tank of the planetary mixer and deionized water is added into the stirring tank; the stirring tank is vacuumized to 300-200 pa and the mixture of all the materials is stirred in the stirring tank for 20-40 minutes to obtain electrode slurry. The super capacitor manufactured with the method is high in reliability, high in power density and high in energy density. The production efficiency is high and the energy consumption is low in a production process.

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 electrode slurry of the usual supercapacitor is made of polytetrafluoroethylene (PTFE), carboxymethyl cellulose (CMC) and styrene-butadiene rubber (SBR) or one or more of them are mixed to make a binder. After a certain proportion of deionized water is dispersed and emulsified, it is fully mixed with acetylene black and activated carbon powder to obtain a slurry with a certain solid content and viscosity. [0003] No matter what kind of binder is used, the main problem is that the viscosity of the binder will change rapidly with the change of storage time and temperature, making it difficult to control the coating thickness of the electrode slurry. [0004] In order to uniformly coat the electrode slurry, it is usually n...

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 傅冠生潘国林阮殿波张洪权陈照平于智强
Owner NINGBO CRRC NEW ENERGY TECH CO LTD
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