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Imidazole polyion liquid electrolyte and preparation method and application thereof

An ionic liquid, imidazolium ion technology, applied in the field of imidazole polyionic liquid electrolyte and preparation thereof, can solve the problems of reduced ionic conductivity of electrolyte, poor high temperature safety, etc., and achieves improved high temperature safety, enhanced transmission efficiency, The effect of excellent self-healing and mechanical properties

Inactive Publication Date: 2020-11-24
ZHONGKAI UNIV OF AGRI & ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is inevitable that the ionic conductivity of the electrolyte will be reduced or the high temperature safety will be deteriorated.
So far, there has been no report on the structural modification of imidazolium ionic liquid copolymers by inserting acrylate monomers on the basis of imidazolium ionic liquid monomers

Method used

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  • Imidazole polyion liquid electrolyte and preparation method and application thereof
  • Imidazole polyion liquid electrolyte and preparation method and application thereof
  • Imidazole polyion liquid electrolyte and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Polyionic Liquid Electrolyte Containing Butyl Acrylate Group.

[0029] Component one:

[0030] Weigh 1.88g 1-vinylimidazole and 3.14g 1-chloropropane in a 50mL round-bottomed flask, then add 8.00g anhydrous toluene, place in a 50°C oil bath and stir for 6h to obtain (1-propyl-3- Vinylimidazole) chloride, add 2.56g butyl acrylate monomer, add simultaneously the initiator (azobisisobutyronitrile) that is 2% with the total mass ratio of 1-vinylimidazole and butyl acrylate monomer, continue to react for 48h , a precipitate appeared, and the gel product obtained after vacuum filtration was extracted with anhydrous ether at 50°C for 48h.

[0031] The structural formula of (1-propyl-3-vinylimidazole) chlorine monomer is as follows:

[0032]

[0033] Wherein, n is any integer in 1-9.

[0034] The structural formula of butyl acrylate monomer is as follows:

[0035]

[0036] Add an ethanol solution of bis(trifluoromethylsulfonyl)imide lithium to carry out ani...

Embodiment 2

[0044] Example 2: Polyionic liquid electrolyte containing isodecyl acrylate group.

[0045] Component one:

[0046] Weigh 1.88g of 1-vinylimidazole and 3.14g of 1-chloropropane in a 50mL round bottom flask, then add 8.00g of anhydrous toluene, stir in an oil bath at 50°C for 6h, add 4.25g of isodecyl acrylate monomer , while adding an initiator (azobisisobutyronitrile) with a total mass ratio of 2% to 1-vinylimidazole and isodecyl acrylate monomer, the reaction was continued for 48 hours, a precipitate appeared, and the gel product obtained after vacuum filtration Extract with anhydrous diethyl ether at 50°C for 48h.

[0047] The structural formula of isodecyl acrylate monomer is as follows:

[0048]

[0049] Add an ethanol solution of lithium bis(trifluoromethylsulfonyl)imide to carry out anion displacement reaction for 24 hours, after precipitation in the water phase, vacuum filter to obtain an imidazolium ionic liquid copolymer containing isodecyl acrylate group, its s...

Embodiment 3

[0056] Embodiment 3: Polyionic liquid electrolyte containing isooctyl acrylate group.

[0057] Component one:

[0058] Weigh 1.88g of 1-vinylimidazole and 3.14g of 1-chloropropane in a 50mL round bottom flask, then add 8.00g of anhydrous toluene, stir in an oil bath at 50°C for 6h, add 3.68g of isooctyl acrylate monomer , while adding an initiator (azobisisobutyronitrile) with a total mass ratio of 2% to 1-vinylimidazole and isooctyl acrylate monomer, the reaction was continued for 48 hours, a precipitate appeared, and the gel product obtained after vacuum filtration Extract with anhydrous diethyl ether at 50°C for 48h.

[0059] The structural formula of isooctyl acrylate monomer is as follows:

[0060]

[0061] Add an ethanol solution of bis(trifluoromethylsulfonyl)imide lithium to carry out anion displacement reaction for 24 hours, after precipitation in the water phase, vacuum filter to obtain an imidazolium ionic liquid copolymer containing isooctyl acrylate group, it...

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Abstract

The invention provides an imidazole polyion liquid electrolyte and a preparation method and application thereof. The imidazole polyion liquid electrolyte comprises an imidazolium ionic liquid copolymer and a lithium salt mixture. The imidazolium ionic liquid copolymer is obtained by initiating an ionic liquid monomer free radical polymerization reaction of an imidazolium ionic liquid monomer and an acrylate monomer through an initiator. According to the an imidazole polyion liquid electrolyte, the flexibility of a molecular chain of the ionic liquid copolymer is regulated and controlled by adopting a flexible acrylate group, the transmission efficiency of ions in the polymer electrolyte is enhanced, meanwhile, the polymer electrolyte is endowed with excellent self-repairing performance andmechanical performance, and a new thought is provided for developing a solid flexible device with high safety performance and high specific energy density.

Description

technical field [0001] The invention belongs to the field of polymer electrolyte materials, and in particular relates to an imidazole polyionic liquid electrolyte and a preparation method thereof. Background technique [0002] Polyionic liquids refer to a class of ionic polymers that are produced by the polymerization of ionic liquid monomers and have anion and cationic groups in the repeating unit structure. Polyionic liquids have both the ion-conducting properties of ionic liquids and the mechanical properties of polymers, and have attracted widespread attention in recent years. They have good applications in the fields of polymer chemistry, material chemistry, energy science, organic synthesis, environment, and functional materials. Application prospect. [0003] As one of the electrolytes, the polymer electrolyte can simultaneously play the role of the electrolyte and the battery separator, ensuring full contact with the electrodes and increasing the specific energy of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0569H01M10/058H01M10/0525H01M10/42C08F220/18C08F220/34C08F220/24C08F226/06
CPCC08F220/24C08F220/34C08F220/1802C08F220/1804C08F220/1808C08F220/1811C08F220/1812H01M10/0525H01M10/0569H01M10/058H01M10/4235C08F226/06Y02E60/10Y02P70/50
Inventor 杨富杰吴晓冰梁冠杰何钰怡邹华舒绪刚
Owner ZHONGKAI UNIV OF AGRI & ENG
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