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A kind of gel polymer electrolyte membrane and its preparation method and application

A gel polymer, electrolyte membrane technology, applied in the field of electrochemical devices, can solve problems such as low conductivity, achieve high safety performance, achieve large-scale production, and be environmentally friendly.

Active Publication Date: 2017-04-12
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

However, solid polymer electrolytes have low conductivity at room temperature (10 -5 ~10 -4 s / cm), the use and application are limited, so the gel polymer electrolyte has become the focus of research

Method used

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  • A kind of gel polymer electrolyte membrane and its preparation method and application
  • A kind of gel polymer electrolyte membrane and its preparation method and application
  • A kind of gel polymer electrolyte membrane and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of a gel polymer electrolyte membrane, comprising the steps of:

[0045] (1) Preparation of N-methoxyethoxymethyl-N-methylpyrrolidine chloride

[0046] In a 250mL flask, add (85g, 1mol) N-methylpyrrolidine and (148.8g, 1.2mol) methoxyethoxychloromethane respectively, after mixing evenly, in N 2 Under protection, heat to 60°C, stir and react for 72 hours. After the reaction is completed, let it stand and cool to room temperature, wash the product with ethyl acetate three times, and dry it in vacuum at 80°C for 48 hours to obtain a light yellow solid, which is chlorinated N-methoxyethoxymethyl-N-methylpyrrolidine, the yield is 83%;

[0047] (2) Preparation of N-methoxyethoxymethyl-N-methylpyrrolidine tetrafluoroborate ionic liquid

[0048] The chlorinated N-methoxyethoxymethyl-N-methylpyrrolidine (102.5g, 0.5mol) and NaBF obtained above 4 (58.3g, 0.53mol) was dissolved in 100mL deionized water, stirred and reacted at room temperature for 8h, after ...

Embodiment 2

[0059] A preparation method of a gel polymer electrolyte membrane, comprising the steps of:

[0060] (1) Preparation of brominated N-methoxyethoxymethyl-N-methylpyrrolidine

[0061] Add (85g, 1mol) N-methylpyrrolidine and (136.4g, 1.1mol) methoxyethoxy bromide respectively in the flask of 250mL, after mixing uniformly, in N 2 Under protection, heat to 70°C, stir and react for 60h. After the reaction is completed, let it stand and cool to room temperature, wash the product with ethyl acetate three times, and dry it in vacuum at 90°C for 36h to obtain a light yellow solid, which is bromide N-methoxyethoxymethyl-N-methylpyrrolidine, the yield is 87%;

[0062] (2) Preparation of N-methoxyethoxymethyl-N-methylpyrrolidine hexafluorophosphate ionic liquid

[0063] Bromide N-methoxyethoxymethyl-N-methylpyrrolidine (102.5g, 0.5mol) and KPF prepared above 6 (101.2g, 0.55mol) was dissolved in 100mL deionized water, stirred and reacted at room temperature for 16h, after the reaction wa...

Embodiment 3

[0073] A preparation method of a gel polymer electrolyte membrane, comprising the steps of:

[0074] (1) Preparation of iodide N-methoxyethoxymethyl-N-methylpyrrolidine

[0075] Add (85g, 1mol) N-methylpyrrolidine and (226.8g, 1.05mol) methoxyethoxymethyl iodide to a 250mL flask respectively, mix well, and 2 Under protection, heat to 80°C, stir and react for 48 hours. After the reaction is completed, let it stand and cool to room temperature, wash the product with ethyl acetate three times, and dry it in vacuum at 100°C for 24 hours to obtain a light yellow solid, which is iodide N-methoxyethoxymethyl-N-methylpyrrolidine, the yield is 87%;

[0076] (2) Preparation of N-methoxyethoxymethyl-N-methylpyrrolidine bis(trifluoromethanesulfonyl)imide salt ionic liquid

[0077] The iodide N-methoxyethoxymethyl-N-methylpyrrolidine (102.5g, 0.5mol) and potassium trifluoromethanesulfonimide TFSI-K (159.5g, 0.5mol) prepared above Dissolve in 100mL deionized water, stir and react at room...

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Abstract

The embodiment of the invention discloses a gel polymer electrolyte membrane. The material of the gel polymer electrolyte membrane contains a mixed material formed by mixing a polymer substrate material and an ionic liquid, wherein the mass ratio of the polymer substrate material to the ionic liquid is 100:30-50, the polymer substrate material is polyvinyl alcohol, and the ionic liquid is an N-methylpyrrolidines ionic liquid. In addition, the embodiment of the invention also discloses a preparation method and an application of the gel polymer electrolyte membrane. The gel polymer electrolyte membrane and the preparation method thereof provided by the invention have the characteristics of being high in safety performance, friendly to environment, and conducive to large-scale preparation and the like.

Description

technical field [0001] The invention relates to the related fields of electrochemical devices, in particular to a gel polymer electrolyte membrane and its preparation method and application. Background technique [0002] Supercapacitor is a new type of energy device between rechargeable batteries and capacitors. It has the advantages of small size, large capacity, fast charging speed, long cycle life, high discharge efficiency, wide operating temperature range, good reliability, pollution-free and maintenance-free It is a new type, efficient and practical energy storage device, so it is widely used in military fields, mobile communication devices, computers, and hybrid power sources for electric vehicles. [0003] The working electrolyte of supercapacitor is divided into aqueous electrolyte, organic liquid electrolyte and polymer electrolyte. The decomposition voltage of aqueous electrolyte is low, so there are few studies. The liquid electrolyte widely used at present has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/04C08K5/3415C08J5/18H01G11/56
CPCY02E60/13
Inventor 周明杰刘大喜王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD