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Preparation method of interpenetrating network structure p(liamps)-based single ion transport gel polymer electrolyte film

An interpenetrating network structure, gel polymer technology, applied in structural parts, circuits, electrical components, etc., can solve the problems of poor dimensional stability, low ion migration number, etc., achieve good thermal stability, improve migration number, and improve The effect of flexibility

Inactive Publication Date: 2011-12-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention will solve the problems of low ion migration number and poor dimensional stability of the existing gel polymer electrolyte; and provide a preparation method of the interpenetrating network structure P (LiAMPS)-based single ion transport gel polymer electrolyte film

Method used

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  • Preparation method of interpenetrating network structure p(liamps)-based single ion transport gel polymer electrolyte film
  • Preparation method of interpenetrating network structure p(liamps)-based single ion transport gel polymer electrolyte film
  • Preparation method of interpenetrating network structure p(liamps)-based single ion transport gel polymer electrolyte film

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specific Embodiment approach 1

[0010] Embodiment 1: In this embodiment, the preparation method of interpenetrating network structure P (LiAMPS)-based single-ion transport gel polymer electrolyte film is carried out according to the following steps:

[0011] 1. Add 2-acrylamide-2-methylpropanesulfonic acid (AMPS) to N,N-dimethylformamide (DMF) to make 2-acrylamide-2-methyl with a mass concentration of 30%. N,N-dimethylformamide solution of propanesulfonic acid, then slowly add lithium carbonate (Li 2 CO 3 ), adding Lithium Carbonate needs 30~40min, stirring 2h, wherein the mol ratio of 2-acrylamide-2-methylpropanesulfonic acid and lithium carbonate is 2: 1, obtains the DMF solution of LiAMPS monomer;

[0012] Two, then add vinyltriethoxysilane (VTES for short) to the DMF solution of LiAMPS monomer obtained in step 1, the mole of vinyltriethoxysilane and 2-acrylamide-2-methylpropanesulfonic acid The ratio is 1:1, then add azobisisobutyronitrile (abbreviated as AIBN, as initiator), the amount of azobisisobut...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment is different from Embodiment 1 in that: the temperature of the polymerization reaction in step 2 is 75°C. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the DMF solution of copolymer P (LiAMPS-co-VTES) described in step 3 and polyethylene glycol dimethacrylate (PEGDMA ) in a weight ratio of 1:2. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a preparation method of a gel polymer dielectric film by conveying an interpenetrating network structure P (LiAMPS) single ion, which belongs to a preparation method of polymer electrolyte films. The present invention solves the problems of low transport numbers and dimension stability of the present gel polymer electrolyte ions. The invention employs 2-acrylamide-2-methyl propanesulfonic acid lithium (LiAMPS) and vinyltriethoxysilane free radical polymerization to obtain a linear polymer P (LiAMPS-co-VTES), P (LiAMPS-co-VTES) containing an ethoxy functional group enables hydrolysis and polycondensation to form a net structure, simultaneously a cross-linking agent monomer polyethylene glycol dimethyl methacrylate is performed a free radical polymerization to form another net structure. The invention is capable of raising the dimension stability of the polymer electrolyte. Through heat weightlessness analysis, the polymer electrolyte films have good heat stability, the initial weightless temperature of the films is more than 200 DEG C, so that the requirement of lithium ion battery can be satisfied.

Description

technical field [0001] The invention belongs to a preparation method of a polymer electrolyte film, in particular to a preparation method of an interpenetrating network structure P (LiAMPS)-based single ion transport gel polymer electrolyte film. Background technique [0002] Gel-type polymer electrolytes have high ionic conductivity at room temperature and are the most promising polymer electrolytes for lithium-ion batteries. The usual gel-type polymer electrolyte is formed by a polymer, a plasticizer, and a lithium salt with a suitable microstructure, and the liquid electrolyte molecules fixed in the microstructure are used to realize ion conduction. [0003] The usual polymer matrix of gel polymer electrolyte is polyether (PEO), polyacrylonitrile (PAN), polymethacrylate (PMMA), polyvinylidene fluoride (PVDF) and vinylidene fluoride-hexafluoropropylene copolymer P (VDF-HFP), etc., commonly used lithium salts are LiClO 4 , LiPF 6 , LiCF 3 SO 3 , LiN(CF 3 SO 2 ) 2 , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08J5/18C08F230/08C08F220/58C08F122/20H01M2/16
CPCY02E60/12Y02E60/10
Inventor 唐冬雁崔巍巍林秀玲宫再霖
Owner HARBIN INST OF TECH
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