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Supramolecular ionic liquid gel electrolyte and its preparation method and application

A technology of gel electrolyte and ionic liquid, which is applied in the direction of hybrid capacitor electrolyte, hybrid/electric double layer capacitor manufacturing, and measurement of the property and force of piezoelectric resistance materials, which can solve the problem of poor mechanical properties and environmental stability of hydrogel electrolytes , chemical bond destruction, material failure and other issues, to achieve excellent environmental stability, good electrical conductivity and energy storage ability, and precise response sensitivity

Active Publication Date: 2022-04-19
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the poor mechanical properties and environmental stability of traditional hydrogel electrolytes, further optimization of related properties is required
First of all, the general gel system uses chemical cross-linking to construct the internal polymer network. Under the condition of large strain, the chemical bonds between the polymer chains will be irreversibly damaged, which will lead to the failure of the material.

Method used

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  • Supramolecular ionic liquid gel electrolyte and its preparation method and application
  • Supramolecular ionic liquid gel electrolyte and its preparation method and application
  • Supramolecular ionic liquid gel electrolyte and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: Preparation of supramolecular ionic liquid gel electrolyte (monomer volume fraction is 20%)

[0036](1) Weigh 0.002g of 1-hydroxycyclohexyl phenyl ketone into a 5mL sample bottle, then draw 0.2mL of 2-[[((phenylamino)carbonyl]oxo]ethylene glycol carbonate and The 1-ethyl-3-methylimidazole bis(trifluoromethylsulfonyl)imide of 0.8mL is in sample vial, stirs until forming transparent clear solution, obtains ionic liquid gel precursor solution;

[0037] (2) Inject the precursor solution into a glass mold, put it into an ultraviolet crosslinking apparatus (365nm, 400W), and carry out a photopolymerization reaction for 30 minutes.

Embodiment 2

[0038] Embodiment 2: Preparation of supramolecular ionic liquid gel electrolyte (monomer volume fraction is 40%)

[0039] (1) Weigh 0.004g of 1-hydroxycyclohexyl phenyl ketone and add it into a 5mL sample bottle, then draw 0.4mL of 2-[[((phenylamino)carbonyl]oxo]ethylene glycol carbonate and The 1-ethyl-3-methylimidazole bis(trifluoromethylsulfonyl)imide of 0.6mL is in sample bottle, stirs until forming transparent and clear solution, obtains ionic liquid gel precursor solution;

[0040] (2) Inject the precursor solution into a glass mold, put it into an ultraviolet crosslinking apparatus (365nm, 400W), and carry out a photopolymerization reaction for 25 minutes.

Embodiment 3

[0047] Example 3: Mechanical performance test of supramolecular ionic liquid gel electrolyte

[0048] The ionic liquid gel electrolytes prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were tested for mechanical properties. The stress-strain curves of different monomer volume contents are as follows: figure 1 shown. When the volume fraction of the monomer is 20%, the gel electrolyte exhibits excellent stretchability (the elongation at break is about 1800%), and maintains a good breaking stress (about 20KPa). When the volume fraction of monomers increases, the network will become denser and denser. Since the stretchability will become worse as the network becomes denser, when the volume fraction of monomers is 40%, 60% and 80%. , and the elongation at break is about 700%, 600% and 610%, respectively. On the contrary, the denser network will bring higher strength, when the monomer volume fraction is 80%, the fracture stress of the gel reaches about 165KPa. Consi...

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Abstract

The invention discloses a supramolecular ion liquid gel electrolyte, a preparation method and application thereof. The ionic liquid gel electrolyte is cross-linked to form a supramolecular polymer network through the reversible non-covalent interaction of hydrogen bonds between poly-2-[[((phenylamino)carbonyl]oxy]carbonate glycols , with 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide with thermal stability, non-volatility and high conductivity as ionic liquid.Dynamic reversible non-covalent cross-linking method and The introduction of ionic liquid optimizes the mechanical properties of ionic liquid gel electrolyte on the one hand, on the other hand makes the ionic liquid gel that makes have good environmental stability.Supramolecular ionic liquid gel electrolyte of the present invention can It can work normally in a wide range and under high humidity conditions, and has broad application prospects in the field of flexible and stretchable electronic devices.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials, and relates to a supramolecular ionic liquid gel electrolyte and a preparation method and application thereof. Background technique [0002] Flexible gel electrolytes are an important part of devices, and gel electrolytes in industry are generally divided into electronic gels and ion gels. The most widely used method to prepare electronic gel electrolytes is to directly dope or blend electronically conductive materials into the gel matrix. Electronically conductive materials are generally divided into three categories: (1) metal (gold, silver, copper, etc.) nanoparticles / nanowires; (2) carbon-based materials (e.g., carbon lipids, carbon nanoparticles / carbon nanowires / CNTs, graphite ene, graphene oxide [GO], reduced GO [rGO] nanosheets); (3) conducting polymers (e.g., polyaniline, polypyrrole, polyphenylenevinylene, polythiophene, poly(3,4 - Ethylenedioxythiophene): poly(styrenes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/84H01G11/56G01L1/18G01L1/22
CPCH01G11/84H01G11/56G01L1/18G01L1/22
Inventor 丛振华胡安康崔泽宇韩政彤李雪洋邓清鸿徐潼赵原黄承泱黄卓航李佳豪
Owner NANJING UNIV OF SCI & TECH
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