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Nano particle doped gel polymer electrolyte, preparation method thereof and application

A gel polymer and nanoparticle technology, which is applied in the direction of electrolyte immobilization/gelation, circuits, electrical components, etc., can solve the problems of insufficient mechanical strength and low ionic conductivity, and achieve optimal liquid absorption and liquid Effects of retention ability, high ionic conductivity, and wide temperature range

Inactive Publication Date: 2016-09-21
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is direct and effective, and the polymer battery has good chemical stability and cycle life, but there are still problems such as low ion conductivity at room temperature and insufficient mechanical strength.

Method used

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  • Nano particle doped gel polymer electrolyte, preparation method thereof and application
  • Nano particle doped gel polymer electrolyte, preparation method thereof and application
  • Nano particle doped gel polymer electrolyte, preparation method thereof and application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) in N 2 Under the protection of a protective atmosphere, add 1.5 parts by mass of emulsifier sodium lauryl sulfate to 68.35 parts by mass of deionized water, stir mechanically for 20 minutes to fully dissolve it, and then add 30 parts by mass of monomer methyl Methyl acrylate (MMA), butyl acrylate (BA), acrylonitrile (AN) and styrene (St) (wherein the mass ratio of MMA, BA, AN, St is 2:1:4:1), the temperature rises High to 60°C, mechanically stirred for 30 minutes to make it evenly mixed. Then the speed of the agitator was adjusted to 800r / min, and at the same time, 0.15 parts by mass of initiator sodium persulfate was slowly added dropwise with a constant pressure funnel, and the initiator was added in 30 minutes. After reacting for 8 hours, a white emulsion was obtained, and the emulsion was poured into 3 parts by mass of Al 2 (SO 4 ) 3 Stir the solution in a beaker to break the emulsion, then wash it repeatedly with deionized water and absolute ethanol, and fi...

Embodiment 2

[0035] (1) in N 2 Under the protection of a protective atmosphere, add 1.5 parts by mass of emulsifier sodium lauryl sulfate to 68.35 parts by mass of deionized water, stir mechanically for 20 minutes to fully dissolve it, and then add 30 parts by mass of monomer methyl Methyl acrylate (MMA), butyl acrylate (BA), acrylonitrile (AN) and styrene (St) (wherein the mass ratio of MMA, BA, AN, St is 2:1:4:1), the temperature rises High to 60°C, mechanically stirred for 30 minutes to make it evenly mixed. Then the speed of the agitator was adjusted to 800r / min, and at the same time, 0.15 parts by mass of initiator sodium persulfate was slowly added dropwise with a constant pressure funnel, and the initiator was added in 30 minutes. After reacting for 8 hours, a white emulsion was obtained, and the emulsion was poured into 3 parts by mass of Al 2 (SO 4 ) 3 Stir the solution in a beaker to break the emulsion, then wash it repeatedly with deionized water and absolute ethanol, and fi...

Embodiment 3

[0040] (1) in N 2 Under the protection of a protective atmosphere, add 1.5 parts by mass of emulsifier sodium lauryl sulfate to 68.35 parts by mass of deionized water, stir mechanically for 20 minutes to fully dissolve it, and then add 30 parts by mass of monomer methyl Methyl acrylate (MMA), butyl acrylate (BA), acrylonitrile (AN) and styrene (St) (wherein the mass ratio of MMA, BA, AN, St is 2:1:4:1), the temperature rises High to 60°C, mechanically stirred for 30 minutes to make it evenly mixed. Then the speed of the agitator was adjusted to 800r / min, and at the same time, 0.15 parts by mass of initiator sodium persulfate was slowly added dropwise with a constant pressure funnel, and the initiator was added in 30 minutes. After reacting for 8 hours, a white emulsion was obtained, and the emulsion was poured into 3 parts by mass of Al 2 (SO 4 ) 3 Stir the solution in a beaker to break the emulsion, then wash it repeatedly with deionized water and absolute ethanol, and fi...

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Abstract

The invention belongs to the field of a lithium ion battery, and specifically discloses nano particle doped gel polymer electrolyte, a preparation method thereof and application. According to the preparation method, firstly, through adoption of an emulsion polymerization method, poly-(methyl methacrylate-butyl acrylate-acrylonitrile-styrene) is synthesized according to a certain proportion; then under an ultrasonic condition, the nano particles of certain quantity are evenly dispersed in polymer solution, the polymer solution is stirred to form viscous gel, the gel is coated on two faces of a support and the support is immersed in de-ionized water, thereby triggering phase shift; and finally, drying is carried out, the nano particle doped lithium ion battery gel polymer film is obtained, and the diaphragm is soaked in the electrolyte, thereby obtaining the gel polymer electrolyte is obtained. According to the electrolyte, the preparation method and the application have the advantages of simple production process, short time, high production efficiency, high heat stability, high mechanical strength and high cycle performance; the polymer film has excellent liquid absorption and liquid keeping capacity and has relatively wide temperature use range.

Description

technical field [0001] The invention belongs to the field of lithium ion batteries, and in particular relates to a gel polymer electrolyte doped with nanoparticles, a preparation method and application thereof. Background technique [0002] Compared with other secondary batteries such as nickel-metal hydride batteries, nickel-cadmium batteries, and lead-acid batteries, lithium-ion batteries have the advantages of high energy density, long cycle life, no memory effect, and environmental friendliness, so they are widely used in electronic products, power automotive and other fields. However, most commercial lithium-ion batteries currently use liquid organic electrolytes. Due to the flash point, low vapor pressure, and strong fluidity of liquid electrolytes, leakage is prone to occur, and there are safety hazards such as combustion and even explosion. In order to solve the safety problem, a gel polymer electrolyte (GPE) was proposed, which uses a polymer matrix to absorb the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565H01M2300/0085Y02E60/10
Inventor 廖友好罗雪仪朱云敏李伟善陈瑾瑾
Owner SOUTH CHINA NORMAL UNIVERSITY
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