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Preparation method of conductive copolymer film

A technology of copolymer membrane and ionic liquid, applied in non-metallic conductors, organic material conductors, etc., can solve the problems of poor membrane flexibility, poor film-forming properties of copolymers, and low electrical conductivity, and achieve good film-forming properties and good electrical conductivity. , good film flexibility

Inactive Publication Date: 2013-12-25
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of poor film-forming property, poor flexibility and low electrical conductivity of the copolymer obtained by copolymerization of ionic liquid and polymer monomer. Conductive copolymers obtained by copolymerizing conductive vinylimidazole ionic liquids and unsaturated organic monomers

Method used

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  • Preparation method of conductive copolymer film

Examples

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Effect test

Embodiment 1

[0018] Example 1: 12 g of N-vinyl-N-ethylimidazole bromide and 13.71 mL of ethylene were dissolved in 60 mL of chloroform; a mixture of 0.183 g of azobisisobutyronitrile and potassium persulfate was added to the solution In the medium, quickly install the condenser tube, feed nitrogen gas, stir and react at 65 °C for 5 h, then filter to obtain a polymer gel electrolyte, wash it with chloroform several times, and dry it in vacuum at 80 °C for later use; The gel electrolyte is dissolved in methanol, stirred until uniform, cast on a polytetrafluoroethylene plate, and dried to obtain a polymer gel electrolyte membrane 1 .

Embodiment 2

[0019] Example 2: Dissolve 12 g of N-vinyl-N-ethylimidazole bromide and 3.26 mL of methyl methacrylate and 1.37 mL of ethylene in 60 mL of chloroform; then add 0.0789 g of azobisisoheptanonitrile to In this solution, a condenser tube was quickly installed, and argon gas was introduced, stirred and reacted at 70 °C for 5 h, and then filtered to obtain a polymer gel electrolyte, which was washed several times with chloroform, and vacuum-dried at 80 °C for later use; then the obtained The polymer gel electrolyte is dissolved in methanol, stirred until uniform, cast on a polytetrafluoroethylene plate, and dried to obtain the polymer gel electrolyte membrane 2 .

Embodiment 3

[0020] Example 3: 12 g of N-vinyl-N-propylimidazolium boron tetrafluoride and 1.68 mL of vinylidene fluoride were dissolved in 60 mL of carbon tetrachloride; 0.0651 g of benzoyl peroxide was added to the solution In the medium, quickly install the condenser tube, pass in argon, stir and react at 80 °C for 3 h, then filter to obtain a polymer gel electrolyte, wash it with carbon tetrachloride several times, and dry it in vacuum at 80 °C for later use; The polymer gel electrolyte was dissolved in DMF, stirred until uniform, cast on a polytetrafluoroethylene plate, and dried to obtain the polymer gel electrolyte membrane 3 .

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Abstract

The invention provides a preparation method of a conductive copolymer film. The preparation method comprises the steps of performing graft copolymerization on conductive vinyl imidazolium-based ionic liquid and unsaturated organic monomers in mole ratio of 1:0.1-1:5 to form a copolymer, and then processing the copolymer by adopting a casting method to form a polymer gel electrolyte film. The prepared polymer gel electrolyte has good film-forming property, high film-forming flexibility, high conductivity (10<-2>-10<-3>s.m<-1>), wide electrochemical window (3-5V) and high thermal stability (200-400 DEG C). The required raw materials are cheap, the operation process is simple, and the product performance is good, and therefore, the preparation method has importation popularization significance in the field of solid electrolyte films.

Description

Technical field [0001] The present invention involves the preparation of ethylenecimazole ionic liquid and organic monomer and its polymer gel electrolyte. Background technique [0002] Although the polymer electrolyte is made of electrolyte and the electrolyte of the water -soluble, and the electrolyte of organic solvents has many advantages, such as non -leakage, safety, no volatile, etc., there are still some shortcomings, such as low conductivity and small electrochemical windows.Because ionic liquid has many characteristics such as non -volatile, non -flammable, high conductivity, high thermal capacity, and wide electrochemical windows, the introduction of ionic liquid into the polymer structure is expected to improve the comprehensive performance of polymer electrolyte.At present, there are three main ways to combine ionic liquid and polymer: the first is to compound the ionic liquid directly with the polymer. For example, the patented CN101768349A discloses a kind of ionic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F226/06C08F220/10C08F212/08C08F226/10C08F214/06C08F214/22C08F210/02C08F214/26C08J5/18H01B1/12
Inventor 刘洪涛曹变梅
Owner CENT SOUTH UNIV
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