Preparation method of polyvinyl carbazolyl gel polymer electrolyte capacitor

A polyvinyl carbazole-based gel and capacitor technology, which is applied in the field of capacitors, can solve the problems of poor contact, large internal resistance, and complicated film-making process, and achieve the effects of reducing internal resistance, low cost, and simple process

Active Publication Date: 2013-12-18
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method has the problems of poor contact between the gel polymer electrolyte and the real surface area of ​​the electrode, large internal resistance, and the film-making process is complicated.

Method used

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  • Preparation method of polyvinyl carbazolyl gel polymer electrolyte capacitor
  • Preparation method of polyvinyl carbazolyl gel polymer electrolyte capacitor

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preparation example Construction

[0013] The embodiment of the present invention provides a method for preparing a polyvinylcarbazole-based gel polymer electrolyte capacitor with excellent compatibility between the gel polymer electrolyte and electrode materials and a simple process. The process flow of this method is as figure 1 As shown, it includes the following steps:

[0014] S01: Stack and wind in sequence according to the order of electrodes / diaphragms / electrodes, and put them into the capacitor case;

[0015] S02: Preparation of mixed electrolyte: mix 0.5-2 mol / L pyrrolidine ionic liquid electrolyte, vinyl carbazole and initiator in a mass ratio of (5-10):1:(0.002-0.02) to obtain mixture;

[0016] S03: Injection and packaging of the mixed electrolyte: inject the mixed solution prepared in step S02 into the capacitor case, seal it, and place it at 60°C-80°C for polymerization reaction for 12-48 hours to obtain polyvinylcarbazole (PVK) based gel polymer electrolyte capacitors.

[0017] Specifically, ...

Embodiment 1

[0025] A preparation method for a PVK-based gel polymer electrolyte capacitor, comprising the steps of:

[0026] S11: Preparation of graphene electrodes:

[0027] Take graphene (specific surface area is 1000m 2 / g) 4.5g, acetylene black 0.26g, PVDF 0.41g, and NMP (40g) was added, fully stirred to make it into a uniform slurry, and then it was scraped on the aluminum foil cleaned by ethanol, at 0.01MPa Dry to constant weight at 100°C under vacuum, and roll press under 15MPa pressure to make graphene electrode. The thickness of the prepared graphene electrode is about 140 μm.

[0028] S12: Preparation of Gel Polymer Electrolyte Capacitor:

[0029] In a glove box filled with argon, the prepared graphene electrodes were stacked and wound in the order of electrode / celgardM825 separator / electrode, and packed into the capacitor case. The pre-prepared 1mol / L PYR 14 BF 4 / AN, vinyl carbazole and initiator BPO are mixed evenly in a mass ratio of 9:1:0.01, then the mixed solution i...

Embodiment 2

[0031] A preparation method for a PVK-based gel polymer electrolyte capacitor, comprising the steps of:

[0032] S21: Prepare graphene electrode:

[0033] Take graphene (specific surface area is 800m 2 / g) 4.5g, acetylene black 0.23g, PVDF 0.27g, and NMP (16g) was added, fully stirred to make it into a uniform slurry, and then it was scraped on the aluminum foil cleaned by ethanol, at 0.01MPa Dry to constant weight at 100°C under vacuum, and roll-press under 15MPa pressure to form a graphene electrode. The thickness of the obtained graphene electrode is about 100 μm.

[0034] S22: Preparation of Gel Polymer Electrolyte Capacitor:

[0035]In a glove box filled with argon, the prepared graphene electrodes were stacked and wound in the order of electrode / celgard2325 separator / electrode, and packed into the capacitor case. The pre-prepared 0.5mol / L PYR 14 BF 4 / PC, vinyl carbazole, and initiator tert-butyl hydroperoxide are mixed evenly in a mass ratio of 5:1:0.002, and then ...

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Abstract

The invention provides a preparation method of a polyvinyl carbazolyl gel polymer electrolyte capacitor. The method includes the steps: according to a sequence of electrode / membrane / electrode, sequentially overlaying and coiling, and mounting in a capacitor shell; preparing a mixed electrolyte; injecting the mixed electrolyte and packaging. According to the preparation method of the polyvinyl carbazolyl gel polymer electrolyte capacitor, a pyrrolidine ion liquid electrolyte, a vinylcarbazole monomer and an initiator are only needed to be proportionally prepared into a mixed solution which is injected into the capacitor shell, then packaging is performed prior to polyreaction, and accordingly the polyvinyl carbazolyl gel polymer electrolyte capacitor can be obtained. The method is simple in technology, the gel polymer electrolyte and electrode materials are enabled to have excellent compatibility, real surface contact area of the gel polymer electrolyte and electrodes is enlarged effectively, internal resistance is reduced effectively, and accordingly shortcomings in the prior art are overcome effectively. In addition, the method is easily controllable in conditions, low in cost, high in safety, environmentally friendly and suitable for large-scale popularization and application.

Description

technical field [0001] The invention belongs to the technical field of capacitors, and in particular relates to a preparation method of a polyvinylcarbazole-based gel polymer electrolyte capacitor. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, have the characteristics of fast charge and discharge, long life, safety and environmental protection. Energy storage for high power requirements has attracted much attention. The working electrolytes of supercapacitors are divided into aqueous electrolytes, organic electrolytes and polymer electrolytes, and polymer electrolytes are further divided into solid polymer electrolytes (SPE) and gel polymer electrolytes (GPE). Polymer electrolyte lithium-ion batteries and polymer electrolyte supercapacitors have been valued by researchers because of their safety, no leakage, and low leakage current. Solid polymer electrolytes have low conductivity at room temperature (10 -5 ~10 -4 s / cm), the use...

Claims

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Application Information

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IPC IPC(8): H01G9/022H01G9/042
Inventor 周明杰刘大喜王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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