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A kind of antifreeze supramolecular hydrogel electrolyte film and its preparation and application

A technology of supramolecular hydrogel and electrolyte film, which is applied in the manufacture of hybrid capacitor electrolytes and hybrid/electric double layer capacitors. It can solve problems such as weak capacity, low material conductivity, and poor performance in freezing resistance. , to achieve good electrical conductivity, excellent antifreeze performance, and expand the application range and application scenarios

Active Publication Date: 2022-03-04
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adjusting the concentration of the soaked strong electrolyte salt solution, the mechanical properties of the supramolecular hydrogel electrolyte film can be effectively regulated in a wide range, and an electrolyte film material with excellent repeatable self-healing properties can be obtained; however, after further research After the test, it was found that although the gel electrolyte film prepared by this method has good mechanical properties, it does not have good performance in frost resistance, and the conductivity of the material is relatively low at sub-zero temperatures. The ability of extreme environments is weak, and through testing and comparing the antifreeze performance of the existing hydrogel electrolyte membrane materials on the market, we also found that the existing materials of this type have the above-mentioned deficiencies

Method used

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  • A kind of antifreeze supramolecular hydrogel electrolyte film and its preparation and application
  • A kind of antifreeze supramolecular hydrogel electrolyte film and its preparation and application
  • A kind of antifreeze supramolecular hydrogel electrolyte film and its preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Example 1. Preparation of an antifreeze supramolecular hydrogel P(AA-co-PDP) (the molar ratio of PDP to AA is 1:5, and the molar ratio of PDP to water molecules is 1:6)

[0028] (1) Weigh 1 g (3-(methacrylamido) propyl) dimethyl (3-thiopropyl) ammonium hydroxide inner salt and 1.2 mL acrylic acid solution and disperse in 0.369 mL water, add magneton Place on a magnetic stirrer until a transparent and clear solution is formed to obtain a monomer solution;

[0029] (2) Add 0.0094 g of ammonium persulfate to the above aqueous monomer solution, stir well, pour the monomer solution into a glass mold, and put it on a hot stage (60°C / 8 h) to obtain a supramolecular hydrogel.

Embodiment 2

[0030] Example 2. Preparation of an antifreeze supramolecular hydrogel P(AA-co-PDP) (the molar ratio of PDP to AA is 1:5, and the molar ratio of PDP to water molecules is 1:7)

[0031] (1) Weigh 1 g (3-(methacrylamido) propyl) dimethyl (3-thiopropyl) ammonium hydroxide inner salt and 1.2 mL acrylic acid solution and disperse in 0.430 mL water, add magneton Place on a magnetic stirrer and stir until a transparent and clear solution is formed to obtain a monomer solution;

[0032] (2) Add 0.0094 g of ammonium persulfate to the above aqueous monomer solution, stir well, pour the monomer solution into a glass mold, and put it on a hot stage (60°C / 8 h) to obtain a supramolecular hydrogel.

Embodiment 3

[0033] Example 3. Preparation of an antifreeze supramolecular hydrogel P(AA-co-PDP) (the molar ratio of PDP to AA is 1:5, and the molar ratio of PDP to water molecules is 1:8)

[0034] (1) Weigh 1 g (3-(methacrylamido) propyl) dimethyl (3-thiopropyl) ammonium hydroxide inner salt and 1.2 mL acrylic acid solution and disperse in 0.492 mL water, add magneton Place on a magnetic stirrer and stir until a transparent and clear solution is formed to obtain a monomer solution;

[0035] (2) Add 0.0094 g of ammonium persulfate to the above aqueous monomer solution, stir well, pour the monomer solution into a glass mold, and put it on a hot stage (60°C / 8 h) to obtain a supramolecular hydrogel.

[0036] Supramolecular hydrogel mechanical properties test and antifreeze performance test

[0037] The antifreeze supramolecular hydrogel that embodiment 1-3 obtains carries out mechanical property test, and the stress-strain curve figure of this hydrogel is as follows figure 1 As shown, the f...

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Abstract

The invention discloses an antifreeze supramolecular hydrogel electrolyte film and its preparation and application. The supramolecular hydrogel electrolyte film is prepared by a two-step synthesis method. Firstly, two monomers, PDP and AA, are mixed in water, and The molar ratio of PDP to water molecules is guaranteed to be 1:6, and the pre-prepared supramolecular hydrogel is obtained through polymerization reaction, and then the supramolecular hydrogel electrolyte film is obtained by soaking in a strong electrolyte salt solution. The application strictly controls the molar ratio of the monomer to the aqueous solution so that the prepared electrolyte film material has excellent antifreeze performance, can work normally in a wide temperature range, 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 polymer optoelectronic materials, and in particular relates to an antifreeze supramolecular hydrogel electrolyte film and its preparation and application. Background technique [0002] With the popularization and development of 5G networks and smart terminals, wearable electronic devices with flexible and stretchable features show huge market application prospects. At present, the application of wearable electronics is reflected in many aspects of human life, such as flexible energy storage devices, wearable physiological detection devices, etc. Flexible and stretchable electronic devices are generally assembled from flexible electrolytes and flexible electrodes in a "sandwich" structure. Hydrogel-based electrolyte materials are widely used in the field of flexible solid-state electrolytes due to their good flexibility and ion conductivity. and research. At the same time, because the hydrogel has good b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L33/02C08F220/06C08F220/58H01G11/56H01G11/84
CPCC08J5/18C08F220/06H01G11/56H01G11/84C08J2333/02C08F220/585
Inventor 李芳李冠军刘晨李培芳牛坚赖文勇
Owner NANJING UNIV OF POSTS & TELECOMM
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