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Gel polymer electrolyte of blended ceramic as well as preparation method and application of gel polymer electrolyte

A technology of gel polymers and blended polymers, applied in circuits, electrical components, secondary batteries, etc., can solve problems such as insufficient mechanical strength and low ion conductivity, and achieve compensation for attenuation phenomenon, simple synthesis process, Good wetting performance

Inactive Publication Date: 2018-03-06
孙健春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 ionic conductivity at room temperature and insufficient mechanical strength, so further research by researchers is urgently needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) The temperature of the oil bath is kept at 30°C. Add P(VdF-HFP) and polyethyleneimine with a mass ratio of 1:1 into a three-necked flask filled with acetone, and stir continuously for 1 hour to fully dissolve it to obtain the mass. The gel polymer solution with a fraction of 30%, wherein the stirring speed is 250r / min, is the blended polymer solution A.

[0022] (2) At room temperature, add 5% of the total content of zirconium nitrate and hafnium acetylacetonate to the blended polymer solution A in sequence at a rate of one milliliter per second, and continue stirring for 15 to 30 minutes after the addition is completed , and then add dropwise the copper hydroxide solution accounting for 2% of the total content at a rate of 2 to 3 milliliters per second. After the dropwise addition is completed and continue to stir for 15 to 30 minutes, a mixed solution B is obtained;

[0023] (3) Spray the obtained mixed solution B onto the electrode membrane or carrier, and dry na...

Embodiment 2

[0028] (1) The temperature of the oil bath was kept at 30°C, and P(VdF-HFP) and polyethyleneimine with a mass ratio of 2:1 were added to a three-necked flask filled with acetone, and mechanically stirred continuously for 1 hour to fully dissolve it to obtain the mass The gel polymer solution with a fraction of 30%, wherein the stirring speed is 250r / min, is the blended polymer solution.

[0029] (2) At room temperature, add 5% of the total content of zirconium nitrate and hafnium acetylacetonate to the blended polymer solution A in sequence at a rate of one milliliter per second, and continue stirring for 15 to 30 minutes after the addition is completed , and then add dropwise the copper hydroxide solution accounting for 2% of the total content at a rate of 2 to 3 milliliters per second. After the dropwise addition is completed and continue to stir for 15 to 30 minutes, a mixed solution B is obtained;

[0030] (3) Spray the obtained mixed solution B onto the electrode membrane...

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Abstract

The invention discloses gel polymer electrolyte of blended ceramic as well as a preparation method and application of the gel polymer electrolyte. The preparation method particularly comprises the following steps: (1) preparing a blended polymer solution; (2) sequentially dropwise adding zirconium nitrate and acetylacetone which account for 5% of the total content of the blended polymer solution into the blended polymer solution A, continuously stirring for 15-30 minutes, and dropwise adding a copper hydroxide solution which accounts for 2% of the total content of the blended polymer solution,so as to obtain a mixed solution B; and (3) spraying the obtained mixed solution B to an electrode membrane or a carrier, and naturally drying, so as to obtain the gel polymer electrolyte mixed withceramic (a ceramic skeleton structure consisting of zirconium, hafnium and copper). The prepared ceramic skeleton structure consisting of zirconium, hafnium and copper has relatively strong mechanicalproperties, and the compound oxide can generate free metal ions due to the running of current in a working process of a lithium battery, so that the electrical conductivity can be improved, and meanwhile, an attenuation phenomenon caused due to the aging of the electrolyte can be remedied; and the electrolyte has relatively good infiltration effect to an electrolyte solution and further has goodelectrochemical stability, so that the conductivity, mechanical strength and safety performance of a polymer film can be improved.

Description

technical field [0001] The invention belongs to the field of lithium ion batteries, and in particular relates to a gel polymer electrolyte of blended ceramics and a preparation method and application thereof. Background technique [0002] Since the concept of lead-acid battery was put forward, secondary batteries aiming at high specific energy, long life and safety have successively experienced lead-acid battery, nickel-chromium battery and nickel-hydrogen battery. Li-ion battery stage. Among all energy storage batteries, lithium-ion batteries have the advantages of high energy density, long cycle life, small self-discharge, no memory effect, and environmental friendliness. Therefore, they are widely used in electronic products, power vehicles and other fields. The best performance of the new green secondary battery. However, most commercial lithium-ion batteries currently use liquid organic electrolytes. Due to the flash point, low vapor pressure, and strong fluidity of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565Y02E60/10
Inventor 孙健春
Owner 孙健春
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