Polyvinyl chloride-based gel polymer electrolyte as well as preparation method and application thereof

A polyvinyl chloride, gel-based technology, applied in the direction of capacitor electrolyte/absorbent, electrolytic capacitors, circuits, etc., can solve the problems of accelerated gas, gas leakage, safety hazards, etc., to overcome safety hazards and environmental pollution, excellent electrical Good chemical performance and safety

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

AI Technical Summary

Problems solved by technology

Although the organic liquid electrolyte has the advantage of high conductivity, the organic solvent in the organic liquid electrolyte is flammable and volatile, and releases flammable gas during charging and discharging, especially under certain unconventional working conditions (such as large Power charge and discharge, overcharge and overdischarge, etc.) to generate a lot of heat will accelerate the generation of gas, resulting in increased internal pressure of the battery, gas leakage, and even fire and explosion, so there are serious safety hazards

Method used

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  • Polyvinyl chloride-based gel polymer electrolyte as well as preparation method and application thereof

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preparation example Construction

[0026] In addition, a method for preparing a polyvinyl chloride-based gel polymer electrolyte is also provided in this embodiment, such as figure 1 shown, including the following steps:

[0027] Step S110, dissolving polyvinyl chloride in an organic solvent according to the mass ratio of polyvinyl chloride to organic solvent of 1:12-1:4, stirring evenly at 30-50° C. to obtain a polyvinyl chloride polymer solution.

[0028] Among them, the molecular weight of polyvinyl chloride is 50,000~120,000.

[0029] The organic solvent is cyclohexanone, dichloroethane or tetrahydrofuran and the like.

[0030] In step S120, the polyvinyl chloride polymer solution is sprayed on the base film by electrospinning, and dried under vacuum conditions at 80-100° C. to obtain a polyvinyl chloride-based gel polymer film.

[0031] In this embodiment, the model of the electrospinning machine in the electrospinning process is BGG4-21. In the process of spraying polyvinyl chloride gel polymer on the ...

Embodiment 1

[0045] Dissolve 10 g of polyvinyl chloride with a molecular weight of 80,000 in 90 g of cyclohexanone, and stir evenly at 50° C. to obtain a polyvinyl chloride solution.

[0046] The polyvinyl chloride polymer solution is sprayed on the base film by electrospinning, the thickness of the polyvinyl chloride gel polymer film deposited on the base film is controlled to be 0.20mm, and then the polyvinyl chloride gel polymer film is cut Form a disc with a diameter of 12 mm, and dry the obtained disc at 100° C. for 36 h under a vacuum condition of 0.01 MPa. Wherein, the model of electrospinning machine used is BGG4-21, and the working parameter of electrospinning machine is: the distance between spinneret and matrix membrane is 15cm, and spinning voltage is 12KV, and the polyvinyl chloride gel polymer The flow rate is 1.0mL / h.

[0047] Soak the vacuum-dried wafer in an acetonitrile solution of 1.2 mol / L N-butyl-N-methylmorpholine tetrafluoroborate for 30 minutes; take out the soaked...

Embodiment 2

[0049] Dissolve 10 g of polyvinyl chloride with a molecular weight of 50,000 in 40 g of tetrahydrofuran, and stir evenly at 40° C. to obtain a polyvinyl chloride solution.

[0050] The polyvinyl chloride polymer solution is sprayed on the base film by electrospinning, and the thickness of the polyvinyl chloride gel polymer film deposited on the base film is controlled to be 0.10 mm, and then the polyvinyl chloride gel polymer film is cut Form a disc with a diameter of 12 mm, and dry the obtained disc at 80° C. for 12 h under a vacuum condition of 0.01 MPa. Wherein, the model of electrospinning machine used is BGG4-21, and the working parameter of electrospinning machine is: the distance between spinneret and matrix membrane is 15cm, and spinning voltage is 12KV, and the polyvinyl chloride gel polymer The flow rate is 0.5mL / h.

[0051] Soak the vacuum-dried wafers in an acetonitrile solution of 0.5 mol / L N-methoxyethyl-N-methylmorpholine tetrafluoroborate for 60 minutes; take ...

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Abstract

The invention relates to a polyvinyl chloride-based gel polymer electrolyte which comprises a polyvinyl chloride-based gel polymer film and an ionic liquid electrolyte, wherein the ionic liquid electrolyte is evenly dispersed in the polyvinyl chloride-based gel polymer film. The polyvinyl chloride-based gel polymer electrolyte has the advantages of good electrochemical performance, high safety and environmental friendliness, and can be used for manufacturing super capacitors. Furthermore, the invention further relates to a preparation method of the polyvinyl chloride-based gel polymer electrolyte, and a super capacitor adopting the polyvinyl chloride-based gel polymer electrolyte.

Description

technical field [0001] The invention relates to the field of gel polymer electrolytes, in particular to a polyvinyl chloride-based gel polymer electrolyte and its preparation method and application. Background technique [0002] Supercapacitor is a new type of energy device between rechargeable batteries and capacitors. It has small size, large capacity, fast charging speed, long cycle life, high discharge efficiency, wide operating temperature range, good reliability, no pollution and maintenance-free And other advantages, it can be used as a new type, efficient and practical energy storage device, so it is widely used in the fields of military, mobile communication, computer and hybrid power supply of electric vehicles. [0003] The electrolytes used for supercapacitors are divided into aqueous electrolytes and organic liquid electrolytes. The decomposition voltage of aqueous electrolyte is low, so there are few studies. Although the organic liquid electrolyte has the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/022H01G9/035
CPCY02E60/13
Inventor 周明杰刘大喜王要兵钟辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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