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Preparation method of polyethylene n-butyl ether based gel polymer electrolyte capacitor

A capacitor and gel-based technology, applied in the field of capacitors, can solve problems such as poor contact, complex film-making process, and large internal resistance, and achieve the effects of reducing internal resistance, simple process, and low cost

Inactive 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 polyethylene n-butyl ether based gel polymer electrolyte capacitor
  • Preparation method of polyethylene n-butyl ether based gel polymer electrolyte capacitor

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preparation example Construction

[0011] An embodiment of the present invention provides a method for preparing a polyethylene n-butyl ether-based gel polymer electrolyte capacitor, which includes the following steps:

[0012] S01: Stack and wind in sequence according to the order of electrodes / diaphragms / electrodes, and put them into the capacitor case;

[0013] S02: Mix 0.5-2mol / L quaternary ammonium salt ionic liquid electrolyte, vinyl n-butyl ether and initiator in a mass ratio of (5-10):1:(0.002-0.02) to obtain a mixed solution;

[0014] S03: Inject the mixed solution into the capacitor casing, seal it, and keep it at 60° C. to 80° C. for 12 to 48 hours to obtain a polyvinyl n-butyl ether-based gel polymer electrolyte capacitor.

[0015] Specifically, in step S01, the electrode is preferably a graphene electrode, and the preparation of the graphene electrode can adopt the following method:

[0016] Mix graphene, conductive agent and binder according to the mass ratio of (85-90):(3-7):(5-10), add solvent,...

Embodiment 1

[0024] Prepare graphene electrode: weigh graphene (specific surface area is about 1000m 2 / g) 4.5g, 0.26g of acetylene black, 0.53g of PVDF, and NMP (30mL) was added, and fully stirred to make it a uniformly mixed slurry. Then it was scraped-coated on an aluminum foil cleaned by ethanol, dried to constant weight at 100°C under a vacuum of 0.01 MPa, and rolled to form a graphene electrode under a pressure of 10 MPa. The thickness of the prepared graphene electrode is about 140 μm.

[0025] Preparation of polyethylene n-butyl ether-based gel polymer electrolyte capacitor: In a glove box filled with argon gas, the prepared graphene electrodes were stacked and wound in the order of electrode / celgard separator / electrode, and packed into the capacitor case. The pre-prepared 1mol / L Et 4 NBF 4 / AN, vinyl n-butyl ether and initiator BPO (dibenzoyl peroxide) are mixed evenly in a mass ratio of 9:1:0.01. Then, the mixed solution was injected into the capacitor and sealed. Finally, t...

Embodiment 2

[0027] Prepare graphene electrode: weigh graphene (specific surface area is about 200m 2 / g) 4.5g, conductive carbon black 0.3g, PVDF 0.7g, and NMP (50mL) was added, fully stirred to become a uniformly mixed slurry. Then it was scraped-coated on an aluminum foil cleaned with ethanol, dried at 100°C under a vacuum of 0.01 MPa to constant weight, and rolled under a pressure of 15 MPa to form a graphene electrode. The thickness of the prepared graphene electrode is about 100 μm.

[0028] Preparation of polyethylene n-butyl ether-based gel polymer electrolyte capacitor: In a glove box filled with argon gas, the prepared graphene electrodes were stacked and wound in the order of electrode / celgard separator / electrode, and packed into the capacitor case. The pre-prepared 0.5mol / L Et 4 NBF 4 / AN, vinyl n-butyl ether and initiator BPO (dibenzoyl peroxide) are mixed evenly in a mass ratio of 5:1:0.002. Then, the mixed solution was injected into the capacitor and sealed. Finally, th...

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Abstract

The invention relates to the technical field of capacitors, and provides a preparation method of a polyethylene n-butyl ether based gel polymer electrolyte capacitor. The method is characterized by including the steps: according to a sequence of electrode / membrane / electrode, sequentially overlaying and coiling, and mounting a coiled product in a capacitor shell; mixing a quaternary ammonium salt ion liquid electrolyte of 0.5-2mol / L , N-butyl vinyl ether and an initiator according to a mass ratio of (5-10):1:(0.002-0.02) to obtain a mixed solution; injecting the mixed solution into the capacitor shell prior to sealing, and placing the capacitor shell injected with the mixed solution at the temperature of 60-80 DEG C for 12-48 hours to obtain the polyethylene n-butyl ether based gel polymer electrolyte capacitor. The method is simple and feasible, and beneficial to large-scale industrial application.

Description

technical field [0001] The invention belongs to the technical field of capacitors, and in particular relates to a preparation method of a polyethylene n-butyl ether-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),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/022
Inventor 周明杰刘大喜王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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