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Ultraviolet polymerized glyceryl carbonate (meth) acrylate-based polymer electrolyte suitable for lithium secondary battery and preparation method thereof

A glycerol carbonate and lithium secondary battery technology, applied in the electrolyte field, can solve problems such as hidden dangers, safety, and low room temperature ionic conductivity, and achieve good flexibility, simple preparation method, and high room temperature conductivity.

Active Publication Date: 2019-01-15
HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyoxyethylene and polyoxypropylene are commonly used all-solid-state polymer electrolytes, however, their low room temperature ionic conductivity due to their crystalline nature limits their applications, while organic carbonate electrolytes have good lithium salt dissociation and lithium ion transfer function, the shortcoming is that it has hidden dangers of safety

Method used

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  • Ultraviolet polymerized glyceryl carbonate (meth) acrylate-based polymer electrolyte suitable for lithium secondary battery and preparation method thereof
  • Ultraviolet polymerized glyceryl carbonate (meth) acrylate-based polymer electrolyte suitable for lithium secondary battery and preparation method thereof
  • Ultraviolet polymerized glyceryl carbonate (meth) acrylate-based polymer electrolyte suitable for lithium secondary battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Glyceryl carbonate methacrylate 1g, polyethylene glycol acrylate (molecular weight 1000) 9g, add 0.6g lithium trifluoromethanesulfonate, stir evenly, add HMPP 0.05g, after stirring evenly, this mixed solution, coat cloth on the glass, followed by UV curing to obtain a solid polymer electrolyte membrane.

Embodiment 2

[0041] Glyceryl carbonate acrylate 9g, polyethylene glycol methacrylate (molecular weight: 200) 1g, add 5g lithium perchlorate, stir evenly, add HCPK 0.1g, after stirring evenly, apply the mixed solution on the glass , followed by UV curing to obtain a solid polymer electrolyte membrane.

Embodiment 3

[0043] Glyceryl carbonate methacrylate 5g, polyethylene glycol methacrylate (molecular weight 2000) 4g, methyl acrylate 1g, add 4g lithium hexafluorophosphate, stir evenly, add MMMP 0.4g, after stirring evenly, this mixed solution, coat cloth on the glass, followed by UV curing to obtain a solid polymer electrolyte membrane.

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Abstract

The invention discloses an ultraviolet polymerized glyceryl carbonate (meth) acrylate-based polymer electrolyte suitable for lithium secondary battery and a preparation method thereof, mainly comprising a lithium salt and a solid polymer matrix, wherein the lithium salt is dispersed in the solid polymer matrix, wherein the content of the lithium salt is 5-50 wt%. The solid polymer matrix is a copolymer of glycerol carbonate (meth) acrylate, polyethylene glycol (meth) acrylate and regulating monomer. The solid polymer electrolyte of the invention has the advantages of simple preparation, high room temperature conductivity, good flexibility and oxidation decomposition potential (4.8 V), and can be used as the electrolyte of a lithium ion battery.

Description

technical field [0001] The invention relates to the field of electrolytes, in particular to a glycerol carbonate (meth)acrylate-based polymer electrolyte suitable for ultraviolet polymerization of lithium secondary batteries and a preparation method thereof. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, large output power, high voltage, small self-discharge, wide operating temperature range, no memory effect, and environmental friendliness. They have been used in electric vehicles, rail transit, large-scale energy storage, and aerospace. field. At present, commercial lithium-ion batteries use organic carbonate-based liquid electrolytes. During long-term service, the organic liquid electrolytes will volatilize, dry up, and leak, which will affect the soundness of battery life. Solid electrolytes have higher safety and ease of operation due to non-leakage, easy packaging and wide operating temperature range. Therefore, solid-...

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0525H01M10/0565H01M2300/0082Y02E60/10
Inventor 白永平赵彦彪安茂忠陈国荣白杨李卫东殷晓芬
Owner HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
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