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Method for preparing semi-interpenetrating network gel polymer electrolyte thin film

A technology of semi-interpenetrating network and gel polymer, which is applied in the field of preparation of gel polymer electrolyte film, and achieves the effects of simple method, stable system performance and fast production speed

Inactive Publication Date: 2008-02-20
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Synthesis by this method solves many problems caused by the blending of two polymers

Method used

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  • Method for preparing semi-interpenetrating network gel polymer electrolyte thin film
  • Method for preparing semi-interpenetrating network gel polymer electrolyte thin film
  • Method for preparing semi-interpenetrating network gel polymer electrolyte thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mix 9.92g of methacryloxypropyltrimethoxysilane with 1.44g of deionized water, add 0.05g of p-toluenesulfonic acid, stir until completely dissolved, then heat up to 40°C for 4 hours to obtain transparent A viscous liquid which is the hydrolyzed cross-linked product of methacryloxypropyltrimethoxysilane. After cooling, add about 2.27g polyethylene glycol dimethacrylate and 0.4g photoinitiator Darocur 1173 to the hydrolyzed cross-linked product, stir together for 0.5 hour, and mix well to obtain a blended prepolymer.

[0022] (2) Weigh 4g of nitrile rubber and dissolve it in 100ml of THF, stir until completely dissolved and uniform, and prepare a nitrile rubber solution with a concentration of 0.04g / ml.

[0023] (3) Weigh about 0.8 g of the blended prepolymer prepared in step (1) and 5 ml of the nitrile rubber solution prepared in step (2), and stir until they are evenly mixed. The mixture was then poured into a Telfon pan, and the solvent was evaporated in a drying ...

Embodiment 2

[0029] (1) Mix 9.92g of methacryloxypropyl trimethoxysilane with 2.16g of deionized water, add 0.06g of p-toluenesulfonic acid, stir until completely dissolved, then raise the temperature to 40°C for 3 hours to obtain a transparent A viscous liquid which is the hydrolyzed cross-linked product of methacryloxypropyltrimethoxysilane. After cooling, add about 1.81g polyethylene glycol dimethacrylate and 0.55g photoinitiator Darocur1173 to the hydrolyzed cross-linked product, stir together for 1 hour, and mix well to obtain a blended prepolymer.

[0030] (2) With the step (1) in the embodiment 1.

[0031] (3) Weigh about 0.6 g of the blended prepolymer prepared in step (1), and 10 ml of the nitrile rubber solution prepared in step (2), and stir until they are evenly mixed. The mixture is then poured into a Telfon pan, and the solvent is volatilized in a drying oven to obtain a blended prepolymer film, and the film is irradiated with ultraviolet light to initiate polymerization for...

Embodiment 3

[0034] (1) Mix 9.92g of methacryloxypropyltrimethoxysilane with 3.6g of deionized water, add 0.07g of p-toluenesulfonic acid, stir until completely dissolved, then raise the temperature to 40°C for 5 hours to obtain transparent A viscous liquid which is the hydrolyzed cross-linked product of methacryloxypropyltrimethoxysilane. After cooling, add about 1.3g of polyethylene glycol dimethacrylate and 0.74g of photoinitiator Darocur 1173 to the hydrolyzed crosslinked product, stir together for 1 hour, and mix well to obtain a blended prepolymer.

[0035] (2) With the step (1) in the embodiment 1.

[0036] (3) Weigh about 0.4g of the blended prepolymer and 15ml of nitrile rubber solution, and stir until they are evenly mixed. The mixture is then poured into a Telfon pan, and the solvent is volatilized in a drying oven to obtain a blended prepolymer film, and the film is irradiated by ultraviolet light to initiate polymerization for 0.4 hours (ultraviolet light power W=110watts, wa...

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Abstract

The invention discloses a preparation method of semi-interpenetrating network gel polyelectrolyte film. The preparation steps are that: firstly, methacryloxypropyl trimethoxy silane is hydrolyzed and crosslinked through a sol-gel method and dimethacrylate ethylene glycol is added to get a mixture; the mixture is mixed with tetrahydrofuranm solution of nitrile rubber and the solution is evaporated to get pre-polyblend film, then pre-polyblend film is solidified by UV-light irradiation to absorb 1M hexafluorophosphate lithium electrolyte solution to prepare the semi-interpenetrating network gel polyelectrolyte film directly. The semi-interpenetrating network ensures the system with better mechanical property, better compatibility between medium polar components in the mixing polymer system and liquid electrolyte, thus the liquid electrolyte is easy to be absorbed for gelation and has relatively high ionic conduction rate. The ionic conduction rate of the prepared semi-interpenetrating network gel polyelectrolyte film can be up to 2.28 is multiplied by 10-3S cm-1 at 30 DEG C and the electrochemical stability is up to 4.6V at room temperature. The invention has simple preparation technique and quick production speed by UV-light irradiation, thereby being applicable to mass industrial production.

Description

technical field [0001] The invention belongs to a preparation method of a secondary polymer electrolyte material for a polymer lithium ion battery, in particular to a preparation method of a gel polymer electrolyte film with a semi-interpenetrating network structure. Background technique [0002] Polymer lithium-ion battery is a new generation of rechargeable lithium-ion battery developed on the basis of liquid lithium-ion batteries. It uses a polymer electrolyte directly sandwiched between the positive and negative electrodes of the lithium battery, and has a simple structure. It not only has the excellent performance of liquid lithium-ion batteries, but also is more flexible in appearance design; since there is no free electrolyte in the assembled battery, the problems of liquid leakage and explosion of liquid lithium-ion batteries are improved. As one of the important components of polymer electrolyte, its preparation and performance research has become one of the more an...

Claims

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Application Information

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IPC IPC(8): C08J5/22C08G81/02H01M10/40
CPCY02E60/122
Inventor 李为立
Owner JIANGSU UNIV OF SCI & TECH
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