Preparation technology of flexible supercapacitor main structure

A technology of supercapacitor and main structure, which is used in the manufacture of hybrid/electric double layer capacitors, etc.

Inactive Publication Date: 2018-01-19
苏州柔能纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no preparation process for the main structure of flexible supercapacitors suitable for the main structure of supercapacitors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0015] Use 80% activated carbon as the active material, 11% carbon black as the conductive agent, and 9% polyvinylidene fluoride as the binder, put it into 10 times the weight ratio of N-methylpyrrolidone for dissolution treatment, use a homogenizer or ultrasonic The processor performs high-speed stirring and dispersion treatment for 30 minutes, adjusts the viscosity and uses it as an electrode mixture, then heats the 0.1mm copper film to 80˚C, and smears the electrode mixture with a well-adjusted viscosity on the copper film with a scraper Repeated coating, and then dried in an 80˚C oven to make an electrode with a coating thickness of 180 μm. Select polyvinyl alcohol with a molecular weight of 100,000 as the binder, dissolve it in water at a temperature of 75°C, and stir it into a transparent state, then add an equivalent amount of sulfuric acid electrolyte with a concentration of 1.5MoL. To solidify at room temperature, then cover the electrode surface with the liquid, and ...

specific example 2

[0017] Use 70% activated carbon as active material, 15% carbon black as conductive agent, 10% graphene flakes as additive, 5% polyvinylidene fluoride as binder, put into 10 times weight ratio of N-methylpyrrolidone for dissolution For processing, use a homogenizer or an ultrasonic processor to perform high-speed stirring and dispersion treatment for 30 minutes, adjust the viscosity and use it as an electrode mixture, then heat the stainless steel mesh with a mesh size of 2mm to 80˚C, and adjust the viscosity The perfect electrode mixture is repeatedly applied on the stainless steel mesh by scraper application, and then placed in an 80˚C oven for drying treatment to make an electrode with a coating thickness of 100 μm. Select polyvinyl alcohol with a molecular weight of 200,000 as the binder, dissolve it in water at a temperature of 80°C, and stir it into a transparent state. To solidify at room temperature, then cover the electrode surface with the liquid, and store it in an e...

specific Embodiment 3

[0018] Using 80% activated carbon as active material, 11% carbon black as conductive agent, 10% carbon nanotube as additive, 9% styrene-butadiene-styrene polymer as binder, put into 10 times the weight ratio of N -Dissolve in methylpyrrolidone, use a homogenizer or ultrasonic processor for high-speed stirring and dispersion for 30 minutes, adjust the viscosity and use it as an electrode mixture, and then heat the stainless steel mesh with a mesh size of 2mm to 80˚C , and the electrode mixture with a well-adjusted viscosity was repeatedly applied on the stainless steel mesh with a scraper, and then dried in an 80˚C oven to make an electrode with a coating thickness of 220 μm. Use polyvinyl alcohol with a molecular weight of 200,000 as the binder, dissolve it in water at a temperature of 80°C, and stir it into a transparent state. Cool down to room temperature and solidify, then cover the electrode surface with the liquid, and store it in an environment with a humidity of 15% R....

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Abstract

The invention discloses a preparation technology of a flexible supercapacitor main structure. The preparation technology comprises the following steps: step one, preparation of a current collector; step two, preparation of electrodes; step three, manufacturing of a hydrogel electrolyte solution; and step four, preparation of a supercapacitor. A metal film of which the thickness is less than 0.2mmis mainly used as the current collector, wherein stainless steel, copper and nickel are preferably selected, a stainless steel mesh film of the metal mesh structure can also be selected, the size of the grids is 1mm-5mm, and silver ink and silver coating material can also be used to be coated on the carbon conductive cloth to manufacture the current collector. With application of the supercapacitor produced by using the preparation technology of the flexible supercapacitor main structure, all the parts have the relatively high flexibility and can be arbitrarily bent. The overall flexibility and the electrochemical performance after bending can be substantially enhanced in comparison with those of other types of supercapacitors, and over 90% of initial capacity can still be reserved after bending 100 times.

Description

technical field [0001] The invention relates to the field of electrode material processing, in particular to a preparation process for a main structure of a flexible supercapacitor. technical background [0002] Nanomaterials refer to materials with at least one dimension in nanometer size (0.1-100 nm) or composed of them as basic units in three-dimensional space, which is approximately equivalent to the scale of 10-100 atoms closely arranged together. Supercapacitor (supercapacitor, ultracapacitor), also known as Electrochemical Capacitor (EC), gold capacitor, Faraday capacitor; energy storage. It is an electrochemical component, and the energy storage process is reversible, and it can be repeatedly charged and discharged hundreds of thousands of times. A supercapacitor can be viewed as two non-reactive porous electrode plates suspended in an electrolyte. When electricity is applied to the plates, the positive plate attracts negative ions in the electrolyte, and the negat...

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 史皓天李紫峰
Owner 苏州柔能纳米科技有限公司
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