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A kind of supercapacitor based on graphene material and manufacturing method thereof

A technology for supercapacitors and manufacturing methods, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor separators, hybrid capacitor electrodes, etc., can solve the problems of no finished products, and achieve low space occupation, large capacity, and operating temperature range wide effect

Inactive Publication Date: 2017-02-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Supercapacitors have been popularized in some fields, but there are no finished products in the market for supercapacitors based on graphene materials

Method used

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  • A kind of supercapacitor based on graphene material and manufacturing method thereof
  • A kind of supercapacitor based on graphene material and manufacturing method thereof
  • A kind of supercapacitor based on graphene material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1 Supercapacitor structure of four-layer structure ultra-thin flexible composite strip plate

[0055] figure 1 A supercapacitor structure with four-layer ultra-thin flexible composite strip plates is given, in which 1 is the first plate, 2 is the dielectric film; 3 is the second plate; 4 is the insulating film.

[0056] The first pole plate 1 and the second pole plate 3 are ultra-thin graphene pole plates formed by adsorbing graphene material on the three-dimensional mesh-shaped nickel foam; the dielectric film 2 is a glass fiber reinforced polypropylene material The insulating film 4 is a film layer of ultra-high pressure polyethylene material coated on the outer surface of the first pole plate 1 or / and the second pole plate 3 . That is, the insulating film 4 can be plated on the outside of any one of the first pole plate 1 and the second pole plate 3 , or the insulating film 4 can be plated on the outside of the first pole plate 1 and the second pole plate...

Embodiment 2

[0059] Embodiment 2 Principles of the present invention and overall process flow

[0060] The invention aims at producing a new type of battery to replace traditional fuel and chemical batteries and apply it to corresponding electrical appliances. First of all, we must consider two points: one is whether the manufactured supercapacitor can guarantee the demand of energy supply; the other is whether the volume of the ultra-capacity battery obtained by the present invention can meet the miniaturization standard. By choosing graphene material as the supercapacitor plate material, we invented a mesh-locked film ultra-thin graphene plate to greatly improve the energy storage performance of the supercapacitor; by introducing high pressure resistance, high strength, The enhanced polymer material with high toughness and ultra-thin characteristics is used as the supercapacitor dielectric film and insulating film material, and the ultra-thin composite flexible strip plate is designed to...

Embodiment 3

[0069] Example 3 Fabrication of ultra-thin graphene pole plate with mesh-locked film

[0070] The present invention utilizes the novel material graphene to make supercapacitors. The preparation of the polar plate is to prepare graphene by chemical method, mix it with polytetrafluoroethylene emulsion with a mass concentration of 10%, and stir it uniformly for 3 hours to make a slurry; add water to the slurry and stir to obtain a mixed solution, add water The amount should be such that every 500ml of the mixed solution contains 10-40g of graphene. After stirring, immerse the reticular nickel foam into the mixed solution. Using the super adsorption of the graphene material, the graphene material is adsorbed on the mesh by ultrasonic assistance. On the foamed nickel current collector, an ultra-thin graphene film with a mesh-locked film is formed; the film is dried under vacuum for 2 hours, and the thickness is reduced to 1 μm to 1000 μm at a high pressure of 20 MPa, and an ultra-t...

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Abstract

The invention belongs to the technical field of electronic equipment and relates to a super capacitor based on a graphene material and a manufacturing method of the super capacitor. According to the structure, the super capacitor comprises a bipolar plate, a dielectric film (2) and an insulation film (4), wherein the bipolar plate is composed of a first polar plate (1) and a second polar plate (3) and is a mesh film locking ultrathin graphene polar plate formed by making the graphene material adsorbed to three-dimensional net-shaped foamed nickel, the dielectric film (2) is sandwiched in the middle of the bipolar plate and is a film made of a glass fiber reinforced polypropylene material, and the outer side face of the bipolar plate is coated with the insulation film (4) which is a film layer made of an ultrahigh pressure polyethylene material. Super strong adsorbability of the graphene material is used, assistance of ultrasonic waves is adopted, the graphene material is adsorbed to a net-shaped foamed nickel current collector, so that a mesh film locking ultrathin graphene film is formed, dried and pressurized, and the bipolar plate is manufactured. According to the super capacitor and the manufacturing method, the bipolar plate of the super capacitor can be thinned to the maximum degree, the super capacitor is miniaturized, large discharge current can be provided, and short time charge, long cycle life and the wide working temperature range are achieved.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, and in particular relates to a small-volume and large-capacity supercapacitor using graphene material as a pole plate. Background technique [0002] Supercapacitors have the characteristics of large capacitance, long charge and discharge life, wide operating temperature range, and safety and pollution-free. Supercapacitors usually have a withstand voltage of 2.5V to 3V, and some have a withstand voltage of 1.6V. At present, the main producing countries are the United States, Germany, Japan, South Korea, Russia and China. In terms of capacity, the supercapacitor produced by Maxwell in the United States can reach 2.75V / 5000F. It is huge and needs to be placed in a special power supply room; if it is made as a size of AA battery, that is, a cylinder with a diameter of 20mm and a height of 50mm, it is currently relatively high-end in the market. The supercapacitor capacity can reach 30...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/36H01G11/68H01G11/52H01G11/84H01G11/86
CPCY02E60/13
Inventor 田小建吴月明吴戈高博
Owner JILIN UNIV
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