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Gel polymer electrolyte, preparation method thereof and super capacitor

A gel polymer and electrolyte technology, applied in electrolytic capacitors, capacitors, capacitor parts, etc., can solve the problem of low safety of liquid electrolytes

Inactive Publication Date: 2014-03-26
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a gel polymer electrolyte with higher safety, its preparation method and supercapacitor

Method used

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  • Gel polymer electrolyte, preparation method thereof and super capacitor

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preparation example Construction

[0035] see figure 1 , the preparation method of the gel polymer electrolyte of an embodiment, comprises the following steps:

[0036] Step S110: Under a protective gas atmosphere, mix the polyacrylonitrile-methyl methacrylate and dimethylformamide according to the ratio of 1g:1mL~3mL, and then sonicate to obtain a slurry.

[0037] The protective gas is an inert gas such as nitrogen, argon, and helium.

[0038] Mix polyacrylonitrile-methyl methacrylate (P(AN-MMA)) and dimethylformamide (DMF), and stir for 1 hour to 4 hours to make polyacrylonitrile-methyl methacrylate and dimethylformamide The formamide was mixed well to obtain a viscous slurry.

[0039] Dimethylformamide was used to create pores on polyacrylonitrile-methylmethacrylate.

[0040] The higher the content of dimethylformamide, the more micropores formed on the polyacrylonitrile-methyl methacrylate, the more electrolyte can be adsorbed, and the conductivity of the gel polymer electrolyte can be effectively improv...

Embodiment 1

[0070] (1) Preparation of polyacrylonitrile-methyl methacrylate film by screen printing

[0071] Add polyacrylonitrile-methyl methacrylate (20g) and dimethylformamide (40mL) into a 100mL flask respectively, stir for 3h under the protection of nitrogen to make it evenly mixed, and ultrasonically treat it in an ultrasonic cleaner for 30min , to obtain a viscous slurry;

[0072] With a 200-mesh screen, the distance between the screen and the glass substrate of the screen printing machine is 3mm, and the angle of the brush during printing is 45°, the above-mentioned viscous paste is printed on the stainless steel lining by the screen printing method. On the bottom, dry at a vacuum degree of 0.01MPa and a temperature of 80°C for 36 hours to obtain a polyacrylonitrile-methyl methacrylate film with a thickness of 80 μm and containing interpenetrating voids. The polyacrylonitrile-methyl methacrylate film The porosity is 50%.

[0073] (2) Preparation of gel polymer electrolyte

[00...

Embodiment 2

[0076] (1) Preparation of polyacrylonitrile-methyl methacrylate film by screen printing

[0077] Add polyacrylonitrile-methyl methacrylate (20g) and dimethylformamide (20mL) into a 100mL flask, stir for 1h under the protection of argon to make them evenly mixed, and sonicate in an ultrasonic cleaner for 10min , to obtain a viscous slurry;

[0078] With 200-mesh screen, the distance between the screen and the glass substrate of the screen printing machine is 3mm, and the angle of the brush during printing is 45°, use the screen printing method to print the viscous paste on the stainless steel substrate On the surface, dry at a vacuum degree of 0.01MPa and a temperature of 60°C for 24 hours to obtain a polyacrylonitrile-methyl methacrylate film with a thickness of 30 μm containing interpenetrating voids. The pores of the polyacrylonitrile-methyl methacrylate film The rate is 40%.

[0079] (2) Preparation of gel polymer electrolyte

[0080] Transfer the dried polyacrylonitrile...

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Abstract

The invention discloses a gel polymer electrolyte. The gel polymer electrolyte comprises a polyacrylonitrile-methyl methacrylate film which comprises interconnected voids and an electrolyte which is adsorbed on the polyacrylonitrile-methyl methacrylate film. The electrolyte is a borate solution whose concentration is 0.5mol / L to 1.5mol / L. The borate is tetraethylammonium tetrafluoroborate, methyl triethylanmine tetrafluoroborate or trimethyl ethyl ammonium tetrafluoroborate. The solvent of the electrolyte is acetonitrile or gamma-butyrolactone. When the gel polymer electrolyte is applied to a super capacitor; the electrolyte is adsorbed on the polyacrylonitrile-methyl methacrylate film in a gel state; the electrolyte not easy to flow; the phenomenon of leakage is prevented; and explosion caused by a lot of gas produced by liquid boiling is prevented. Compared with the traditional super capacitor, the use of the super capacitor which is prepared by the gel polymer electrolyte is safer. The invention further provides a preparation method of the gel polymer electrolyte, and the super capacitor.

Description

technical field [0001] The invention relates to a gel polymer electrolyte, a preparation method thereof and a supercapacitor. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, have the characteristics of fast charging and discharging, long life, safety and environmental protection. Energy storage for high power demands has drawn much attention. [0003] The working electrolyte of a supercapacitor is generally an aqueous electrolyte or an organic electrolyte. The currently commonly used liquid organic electrolyte has the advantage of high conductivity, but because it contains flammable and volatile organic solvents, it releases flammable gases during charging and discharging, resulting in increased internal pressure of the battery, gas leakage, and even fire and explosion. Therefore, there is a serious potential safety hazard. Contents of the invention [0004] Based on this, it is necessary to provide a gel polymer electrolyte with...

Claims

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Application Information

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IPC IPC(8): H01G9/022H01G9/035
CPCY02E60/13
Inventor 周明杰刘大喜袁新生王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD