Composite ion hydrogel composition as well as preparation method and application thereof

A composite ion and hydrogel technology, applied in the field of composite ion hydrogel compositions, can solve problems such as instability, and achieve the effects of avoiding salting out, excellent air stability, and strong interfacial adhesion.

Pending Publication Date: 2022-06-21
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydrogels are often still unstable due to liquid volatilization when exposed to air, thus developing an air-stable, high-ionic-conductivity hydrogel electrolyte is required.

Method used

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  • Composite ion hydrogel composition as well as preparation method and application thereof
  • Composite ion hydrogel composition as well as preparation method and application thereof
  • Composite ion hydrogel composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] figure 2 The relative mass of the polyacrylamide / polyvinyl alcohol / bistrifluoromethanesulfonimide lithium composite ionic hydrogel composition prepared in Example 1 changes with time at a humidity of 30%. It can be seen from the figure that the mass of the consistent ionic hydrogel remains stable within 21 days, which is about 1.04 times of the original mass.

[0034] image 3 The polyacrylamide / polyvinyl alcohol / bistrifluoromethanesulfonimide lithium composite ionic hydrogel composition prepared in Example 1 is shown as the supercapacitor electrolyte, manganese dioxide is used as the positive electrode, and YP-50 is used as the negative electrode. Cyclic voltammetry graph. It can be seen from the figure that the obtained supercapacitor device exhibits typical electric double layer capacitance behavior in the voltage window from 0 to 1.8 V.

[0035] Example 2

[0036] Weigh 5g of acrylamide, 1g of polyethylene glycol, and 20g of sodium bistrifluoromethanesulfonimid...

Embodiment 1

[0042] Weigh 5g of acrylamide, 1g of polyvinyl alcohol, and 32g of lithium bistrifluoromethanesulfonimide in 9g of water, stir and dissolve at 80°C; weigh 0.1g of N,N'-bis(acryloyl)cystamine in 10g of water, stir Ultrasonic dispersion; weigh 0.05g of ammonium persulfate in 5g of water, stir to dissolve. Add ammonium persulfate solution and N,N'-bis(acryloyl)cystamine solution to acrylamide / polyvinyl alcohol / bistrifluoromethanesulfonimide lithium solution, heat and stir at 70°C until viscous and then - Cool at 7°C to obtain ionic glue. The obtained polyacrylamide / polyvinyl alcohol / bistrifluoromethanesulfonimide lithium ion glue was vacuum-dried at 70° C. for 12 hours to obtain a composite ionic hydrogel composition.

Embodiment 2

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Abstract

The invention relates to a composite ion hydrogel composition as well as a preparation method and application thereof, and the preparation method of the composite ion hydrogel composition comprises the following steps: (1) dissolving acrylamide, a water-soluble high-molecular compound and bis (trifluoromethanesulfonyl) imide salt in water to form a solution A; dissolving a cross-linking agent in water to form a solution B; dissolving an initiator in water to form a solution C; (2) adding the solution B and the solution C obtained in the step (1) into the solution A, uniformly stirring, pouring into a mold, continuously stirring under a heating condition, and cooling after the solution is viscous, so as to obtain ionic glue; and (3) carrying out vacuum heating and drying on the ion glue obtained in the step (2) to obtain the composite ion hydrogel composition.

Description

technical field [0001] The invention relates to a composite ionic hydrogel composition with air stability, high ion conductivity and viscosity, a preparation method and application thereof, and belongs to the field of supercapacitors. Background technique [0002] Since 2010, wearable devices have gradually become an important part of daily life. In addition to smart watches and motion sensing devices, wearable devices have developed more functions in the health field, including thermometers, oximeters, and motion meters, all of which have been commercially applied. However, the marketization of many wearable devices is still largely limited by the rigidity, unsafety, and incompatibility with the skin of commercial batteries. Next-generation wearable devices require power supplies that are flexible and can be used offline with the wearable device. [0003] Supercapacitors have attracted attention due to their high power density and good stability, and their flexibility can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08L33/26C08L29/04C08K5/435C08F220/56C08F222/38C08F230/06H01G11/56H01M10/0525H01M10/054H01M10/0565
CPCC08J3/075H01M10/054H01M10/0525H01M10/0565H01G11/56C08F220/56H01M2300/0085C08J2333/26C08J2429/04C08K5/435C08F222/385C08F230/065
Inventor 黄富强张绍宁任大勇秦鹏
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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