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Preparation method of semi-interpenetrating gel polymer electrolyte doped with ion complex

A gel polymer and ion-doped technology, which is applied in solid electrolytes, non-aqueous electrolytes, circuits, etc., can solve the problems of ineffective system modification, poor compatibility of polymer matrix, and high surface energy of inorganic particles. Increase the electrochemical stability window, increase the degree of disorder, and improve the effect of electrochemical performance

Active Publication Date: 2016-03-30
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high surface energy of inorganic particles and poor compatibility with the polymer matrix, clusters are prone to occur, and it is difficult to disperse uniformly, so the modification effect on the system is not obvious

Method used

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  • Preparation method of semi-interpenetrating gel polymer electrolyte doped with ion complex
  • Preparation method of semi-interpenetrating gel polymer electrolyte doped with ion complex
  • Preparation method of semi-interpenetrating gel polymer electrolyte doped with ion complex

Examples

Experimental program
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Effect test

Embodiment 1

[0020] 1) Disperse 1g of Degussa A300 fumed silica and 0.05g of γ-methacryloxypropyltrimethoxysilane in a mixed solvent of 40ml of ethanol and 10ml of water, and use hydrochloric acid as a catalyst to adjust the reaction system The pH of the solution is 3, and the temperature is raised with stirring so that the reaction temperature is around 70°C for 6 hours. The obtained product is first filtered and then baked in a vacuum oven at 100°C for 6 hours. The obtained γ-methacryloyloxypropyl Mix and disperse 1g of trimethoxysilane grafted fumed silica powder with 5g of acrylic acid in deionized water, the concentration of the mixture solution is 1g / ml, then add 0.03g of ammonium persulfate, stir and heat up and react at 80°C for 9 hours Cool down to 50°C, then add 0.1g / ml lithium hydroxide aqueous solution to the system, the added lithium hydroxide is in equimolar amount to the acrylic acid in the reaction system, react the system at 50°C for 2 hours, and filter the obtained product...

Embodiment 2

[0026] 1) Disperse 1g of Degussa A200 fumed silica and 0.0625g of γ-methacryloxypropyltrimethoxysilane in a mixed solvent of 30ml of ethanol and 15ml of water, and use hydrochloric acid as a catalyst to adjust the reaction system The pH of the solution is 2, and the temperature is raised with stirring so that the reaction temperature is 60°C for 7 hours. The obtained product is first filtered and then heated and dried in a vacuum oven at 80°C for 8 hours. The obtained γ-methacryloyloxypropyltrimethyl Disperse 1g of oxysilane-grafted fumed silica powder and 2g of acrylic acid in deionized water, the concentration of the mixture solution is 1g / ml, then add 0.02g of ammonium persulfate, stir and heat up at 70°C for 10 hours and then cool down to 50°C ℃, and then add 0.1g / ml lithium hydroxide aqueous solution to the system, the added lithium hydroxide and the acrylic acid in the reaction system have an equimolar amount, and the system is reacted at 50 ℃ for 1 hour, and the obtained...

Embodiment 3

[0030] 1) Disperse 1g of Degussa A380 fumed silica and 0.1g of γ-methacryloxypropyltrimethoxysilane in a mixed solvent of 30ml of ethanol and 10ml of water, and use hydrochloric acid as a catalyst to adjust the reaction system The pH of the solution is 4, and the temperature is raised with stirring so that the reaction temperature is around 80°C for 5 hours. The obtained product is first filtered and then dried in a vacuum oven at 120°C for 4 hours. The obtained γ-methacryloyloxypropyltrimethyl Disperse 1g of oxysilane-grafted fumed silica powder and 3g of acrylic acid in deionized water, the concentration of the mixture solution is 1g / ml, then add 0.06g of ammonium persulfate, stir and raise the temperature in the range of 90°C for 8 hours, then cool down to 50°C, then add 0.1g / ml lithium hydroxide aqueous solution to the system, the added lithium hydroxide is in equimolar amount to the acrylic acid in the reaction system, the system reacts at 50°C for 1.5 hours, the obtained ...

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Abstract

The invention discloses a preparation method for an ionic-complex-doped semi-interpenetrating gel polymer electrolyte. The preparation method comprises: firstly performing surface ionization cladding modification on gas-phase SiO2, dispersing in an acetonitrile solution of polyethylene oxide and tri(propylene glycol) diacrylate for dopping, after dispersion is uniform, then adding a photoinitiator 1-hydroxycyclohexyl phenyl ketone, performing solvent volatilization, then performing ultraviolet light solidification, after solidification is performed, performing vacuum drying on an obtained film, and adsorbing a 1 M lithium hexafluorophosphate carbonate-electrolyte solution, so as to obtain the modified composite micropore gel polymer electrolyte. The ionic conductivity of the film at 20 DEG C is 2.78*10<-3> S / cm, and the electrochemical window is 4.8 V. The preparation method for the ionic-complex-doped semi-interpenetrating gel polymer electrolyte has good application prospect in fields such as polymer lithium ion batteries and the like.

Description

technical field [0001] The invention belongs to the field of polymer lithium ion batteries, and relates to a method for preparing a semi-interpenetrating gel polymer electrolyte doped with an ion compound. Background technique [0002] With the popularity of portable devices such as mobile phones and tablet computers, lithium-ion batteries have received unprecedented attention and development. Polymer electrolytes are key materials required for next-generation lithium-ion batteries. The polymer electrolyte is generally used in its gel state, which is a gel polymer electrolyte. Since polyethylene oxide has good electrochemical stability and can dissolve inorganic salts to improve its conductivity, there are many studies on gel polymer electrolytes based on polyethylene oxide. The transmission of lithium ions is mainly in the amorphous region, and the lithium ions migrate rapidly by means of the chain segment movement of the amorphous part of the polymer electrolyte. Howeve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565C08F283/06C08F222/20C08F2/48C08K9/04C08K9/06C08K3/36
CPCC08F283/06C08J5/18C08J9/40C08J2351/08C08K3/36C08K9/10C08L2203/16H01M10/0565H01M2300/0082C08F222/20Y02E60/10
Inventor 李为立吴雨慧杨刚
Owner JIANGSU UNIV OF SCI & TECH
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