Polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte as well as preparation method and application thereof

A hexafluoropropylene-based gel, polyvinylidene fluoride technology, applied in capacitor electrolytes/absorbents, electrolytic capacitors, circuits, etc., can solve the problems of accelerated gas, gas leakage, safety hazards, etc., to overcome safety hazards and environmental problems Pollution, excellent electrochemical performance, good safety effect

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

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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

Method used

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  • Polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte as well as preparation method and application thereof

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preparation example Construction

[0026] In addition, this embodiment also provides a method for preparing polyvinylidene fluoride-hexafluoropropylene gel polymer electrolyte, such as figure 1 shown, including the following steps:

[0027] Step S110, dissolving polyvinylidene fluoride-hexafluoropropylene in the organic solvent according to the mass ratio of polyvinylidene fluoride-hexafluoropropylene to organic solvent is 1:12~1:4, stirring at 30~50°C Uniformly, obtain polyvinylidene fluoride-hexafluoropropylene polymer solution.

[0028] Among them, the molecular weight of polyvinylidene fluoride-hexafluoropropylene is 300,000 to 800,000.

[0029] The organic solvent is N-methylpyrrolidone, N,N-dimethylformamide, acetonitrile or ethanol.

[0030] Step S120, spraying the polyvinylidene fluoride-hexafluoropropylene polymer solution on the collecting plate by electrospinning, drying under vacuum conditions at 80-100°C to obtain polyvinylidene fluoride-hexafluoropropylene-based gel polymerization physical film...

Embodiment 1

[0045] Dissolve 10 g of polyvinylidene fluoride-hexafluoropropylene with a molecular weight of 500,000 in 90 g of N-methylpyrrolidone, and stir evenly at 40° C. to obtain a polyvinylidene fluoride-hexafluoropropylene solution.

[0046] Polyvinylidene fluoride-hexafluoropropylene polymer solution is sprayed on the collecting plate by electrospinning method, and the thickness of the polyvinylidene fluoride-hexafluoropropylene gel polymer film deposited on the collecting plate is controlled to be 0.20mm, and then The polyvinylidene fluoride-hexafluoropropylene gel polymer film was cut into discs with a diameter of 12 mm, and the obtained discs were dried at 100° C. under a vacuum condition of 0.01 MPa for 36 h. Among them, the model of the electrospinning machine used is BGG4-21, and the working parameters of the electrospinning machine are: the distance between the spinneret and the collecting plate is 15cm, the spinning voltage is 12KV, polyvinylidene fluoride-hexafluoropropylen...

Embodiment 2

[0049] Dissolve 10 g of polyvinylidene fluoride-hexafluoropropylene with a molecular weight of 300,000 in 40 g of acetonitrile, and stir evenly at 30° C. to obtain a polyvinylidene fluoride-hexafluoropropylene solution.

[0050] Polyvinylidene fluoride-hexafluoropropylene polymer solution is sprayed on the collecting plate by electrospinning method, and the thickness of the polyvinylidene fluoride-hexafluoropropylene gel polymer film deposited on the collecting plate is controlled to be 0.10mm, and then The polyvinylidene fluoride-hexafluoropropylene gel polymer film was cut into discs with a diameter of 12 mm, and the obtained discs were dried at 80° C. under a vacuum condition of 0.01 MPa for 12 h. Among them, the model of the electrospinning machine used is BGG4-21, and the working parameters of the electrospinning machine are: the distance between the spinneret and the collecting plate is 15cm, the spinning voltage is 12KV, polyvinylidene fluoride-hexafluoropropylene The f...

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Abstract

The invention relates to a polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte which comprises a polyvinylidene fluoride-hexafluoropropylene-based gel polymer film and an ionic liquid electrolyte, wherein the ionic liquid electrolyte is evenly dispersed in the polyvinylidene fluoride-hexafluoropropylene-based gel polymer film. The polyvinylidene fluoride-hexafluoropropylene-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 polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte, and a super capacitor adopting the polyvinylidene fluoride-hexafluoropropylene-based gel polymer electrolyte.

Description

technical field [0001] The invention relates to the field of gel polymer electrolytes, in particular to a polyvinylidene fluoride-hexafluoropropylene-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 liqu...

Claims

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Application Information

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