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Gel polymer electrolyte and preparation method thereof, and electrochemical power source and application thereof

A gel polymer and electrolyte technology, applied in the field of electrochemical power supply, can solve the problems of not being able to meet the growing demand and application range of lithium batteries, limited improvement in electrical conductivity, and unsatisfactory effects, and achieve excellent electrical performance. Chemical properties, lower production costs, high yield and efficiency

Inactive Publication Date: 2014-03-26
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect is not very satisfactory, and the battery yield is not high
In addition, the existing gel polymer electrolytes have limited improvement in electrical conductivity, and cannot well meet the increasing market demand and application range for lithium batteries.

Method used

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  • Gel polymer electrolyte and preparation method thereof, and electrochemical power source and application thereof
  • Gel polymer electrolyte and preparation method thereof, and electrochemical power source and application thereof
  • Gel polymer electrolyte and preparation method thereof, and electrochemical power source and application thereof

Examples

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preparation example Construction

[0021] The embodiments of the present invention provide a gel polymer electrolyte with high mechanical strength and electrical conductivity and low cost and a preparation method thereof. The preparation method technological process of this gel polymer electrolyte is as follows figure 1 As shown, it includes the following steps:

[0022] Step S01. preparing viscous liquid containing PMMA polymer: preparing PMMA polymer and organic plasticizer into viscous liquid;

[0023] Step S02. Casting to prepare a gel polymer electrolyte membrane: coating the viscous liquid prepared in step S01 on a non-woven fabric separator, forming a film by casting, and drying in vacuum to obtain a gel polymer electrolyte membrane;

[0024] Step S03. Immersion and adsorption electrolyte: under the protection of an inert gas, place the gel polymer electrolyte membrane in a lithium ion electrolyte with a concentration of 0.5-2 mol / L and immerse it for 5-60 minutes, and take out the obtained gel polymer ...

Embodiment 1

[0049] Gel polymer electrolyte and preparation method thereof, the preparation method of the gel polymer electrolyte comprises the following steps:

[0050] Step 11. Prepare the viscous liquid containing PMMA: add 10g PMMA and 120g NMP respectively in the flask, and stir for 8h under the protection of inert gas to make it mix evenly to obtain a uniform transparent viscous liquid;

[0051] Step 12. Preparation of gel polymer electrolyte membrane by casting: cast the viscous prepared in step 11 on a PET non-woven membrane to form a film, and naturally volatilize until the film turns white, and vacuum dry at 100°C with a vacuum degree of 0.01MPa 48h, obtain the PMMA polymer base gel film that PET non-woven fabric strengthens;

[0052] Step 13. Prepare the PMMA-based gel polymer electrolyte reinforced by PET non-woven fabric: transfer the dry PMMA-based gel film to a glove box filled with argon, and immerse it in 1mol / L LiPF 6 / EC+DMC in the lithium-ion battery electrolyte (the v...

Embodiment 2

[0058] Gel polymer electrolyte and preparation method thereof, the preparation method of the gel polymer electrolyte comprises the following steps:

[0059] Step 21. Prepare the viscous liquid containing PMMA: add 10g PMMA and 50gAN respectively in the flask, and stir for 10h under the protection of inert gas to make it mix evenly to obtain a uniform transparent viscous liquid;

[0060] Step 22. Preparation of gel polymer electrolyte membrane by casting: cast the viscous prepared in step 21 on a PET non-woven membrane to form a film, and naturally volatilize until the film turns white, and vacuum dry at 60°C with a vacuum degree of 0.01MPa 24h, obtain the PMMA polymer base gel film that PET non-woven fabric strengthens;

[0061] Step 23. Prepare the PMMA-based gel polymer electrolyte reinforced by PET non-woven fabric: transfer the dried PMMA-based gel film to a glove box filled with argon, and immerse it in 1mol / L LiPF 6 / EC+DMC lithium-ion battery electrolyte (the volume ra...

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Abstract

The invention discloses a gel polymer electrolyte and a preparation method thereof, and an electrochemical power source and application thereof. The preparation method of the gel polymer electrolyte comprises the following steps: preparing a thick liquid containing PMMA (polymethyl methacrylate) polymer, preparing a gel polymer electrolyte film by running, and impregnating and adsorbing the electrolyte. The electrochemical power source contains the gel polymer electrolyte. The preparation method of the gel polymer electrolyte has the advantages of simple technique, mature technology, high yield and high efficiency, and effectively lowers the production cost. The gel polymer electrolyte prepared by the method has the advantages of high mechanical strength and high conductivity. The electrochemical power source containing the gel polymer electrolyte has the advantages of high yield, low production cost, excellent electrochemical properties and wider application range.

Description

technical field [0001] The invention belongs to the technical field of electrochemical power sources, and in particular relates to a gel polymer electrolyte, a preparation method thereof, an electrochemical power source and applications thereof. Background technique [0002] Due to the advantages of small size, light weight, high capacity, and no memory effect, lithium-ion batteries are widely used in mobile phones, mobile phones, military and electric vehicles. [0003] Lithium-ion battery electrolytes are divided into organic liquid electrolytes and polymer electrolytes. The liquid electrolyte widely used at present has the advantage of high conductivity, but because it contains flammable and volatile organic solvents, it releases flammable gases during charging and discharging, especially under certain unconventional working conditions (such as high power Charge and discharge, overcharge and overdischarge, etc.) will generate a large amount of heat to accelerate the gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/058H01G9/022
CPCH01M10/0565H01M10/058H01M2300/0085Y02E60/10Y02P70/50
Inventor 周明杰刘大喜王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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