Stretchable, compressible and antifreeze organohydrogel electrolyte, preparation method and application

A hydrogel and electrolyte technology, applied in the field of compressible, antifreeze organic hydrogel electrolyte, and stretchable, can solve the problems of low temperature performance compression performance, etc., and achieve significant resistance change, good reversibility, good low temperature electricity. performance effect

Active Publication Date: 2022-07-05
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the stretching and compression performance of the existing hydrogel material is significantly lowered while the low temperature performance is improved, the present invention provides a stretchable, compressible, and antifreeze organic hydrogel electrolyte, a preparation method and an application. Freezing monomers and strengthening and toughening components make the resulting hydrogel electrolytes have excellent stretch-compression cycle performance and conductivity

Method used

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  • Stretchable, compressible and antifreeze organohydrogel electrolyte, preparation method and application
  • Stretchable, compressible and antifreeze organohydrogel electrolyte, preparation method and application
  • Stretchable, compressible and antifreeze organohydrogel electrolyte, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0062] A stretchable, compressible, and freeze-resistant organohydrogel electrolyte S 1 A 4 and preparation method thereof, hydrogel electrolyte S 1 A 4 Include the following components by mass fraction:

[0063] Soy protein isolate 2.0%, SBMA 2.7%, AAm 10.9%, MBA 0.027%, lithium chloride 6.55%, ammonium persulfate 0.027%, the balance is DMSO and water, and the mass ratio of DMSO and water is 3:7. S 1 A 4 The mechanical and electrical properties of the hydrogels are shown in Table 1.

[0064] Hydrogel Electrolyte S 1 A 4 The preparation method comprises the following steps:

[0065] a. Add 0.225g of soybean protein isolate, 2.55g of DMSO and 5.95g of water into a 20mL glass bottle, and place the glass bottle in a 90°C constant temperature water bath and stir for 2h;

[0066] b. Add SBMA and acrylamide in a mass ratio of 1:4 (total amount is 1.5g) into a glass bottle, then add 0.003g MBA, 0.72g lithium chloride, 0.0225g ammonium persulfate, and stir magnetically for 30...

Embodiment 2

[0069] A stretchable, compressible, and freeze-resistant organohydrogel electrolyte S 1 A 1 and preparation method thereof, hydrogel electrolyte S 1 A 1 , including the following components by mass fraction:

[0070] Soy protein isolate 2.0%, SBMA 6.8%, AAm 6.8%, MBA 0.027%, lithium chloride 6.55%, ammonium persulfate 0.027%, the balance is DMSO and water, and the mass ratio of DMSO and water is 3:7. S 1 A 1 The mechanical and electrical properties of the hydrogels are shown in Table 1.

[0071] Hydrogel Electrolyte S 1 A 1 The preparation method is the same as in Example 1, except that the mass ratio of SBMA to AAm is 1:1.

Embodiment 3

[0073] A stretchable, compressible, and freeze-resistant organohydrogel electrolyte S 1 A 8 and preparation method thereof, hydrogel electrolyte S 1 A 8 , including the following components by mass fraction:

[0074] Soy protein isolate 2.0%, SBMA 1.52%, AAm 12.1%, MBA 0.027%, lithium chloride 6.55%, ammonium persulfate 0.027%, the balance is DMSO and water, and the mass ratio of DMSO and water is 3:7. S 1 A 8 The mechanical and electrical properties of the hydrogels are shown in Table 1.

[0075] Hydrogel Electrolyte S 1 A 8 The preparation method is the same as that in Example 1, except that the mass ratio of SBMA to AAm is 1:8.

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Abstract

The invention belongs to the field of functional polymer hydrogels, and particularly relates to a stretchable, compressible and antifreeze organic hydrogel electrolyte, a preparation method and applications. The organic hydrogel electrolyte provided by the present invention is formed from methacryloylethylsulfobetaine, acrylamide, and dimethyl sulfoxide and water as solvents through radical initiation polymerization, and the cross-linked network is doped with soybean protein. The organic hydrogel electrolyte provided by the invention has a maximum fracture strain of up to 762.5%, can still recover to the original state after repeated 500% tensile or 80% compressive strain, and has excellent mechanical properties; the room temperature conductivity can reach 37.5mS ·cm ‑1 , at ‑20°C, the charge-discharge time is still 13s, so it has good low-temperature electrical properties, and can achieve the technical effect of using hydrogel electrolyte as a supercapacitor electrolyte; it has strain sensitivity, and can realize hydrogel electrolyte as a stable The technical effect of the sensor material.

Description

technical field [0001] The invention belongs to the field of functional polymer hydrogels, and particularly relates to a stretchable, compressible and antifreeze organic hydrogel electrolyte, a preparation method and applications. Background technique [0002] Hydrogel is a special kind of material. It is formed by cross-linking of hydrated polymer segments with a large amount of water in the interstices. As a result, hydrogels generally appear soft and moist in appearance. Due to the abundant hydrophilic groups on its segments, hydrogels usually have good water absorption and water retention properties, and some hydrogels can even absorb about 2000 times their own weight in water. These groups also provide a large number of adsorption sites for electrolyte ions in solution, making it one of the ideal materials for electrolytes. More importantly, the hydrogel material has good designability and tunability, which makes it possible for the modified hydrogel to adapt to a va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08F289/00C08F220/38C08F220/56C08F222/38G01N27/12H01G11/56C08L51/00
CPCC08J3/075C08F289/00H01G11/56G01N27/125C08J2351/00C08F220/387C08F220/56C08F222/385Y02E60/13Y02E60/10
Inventor 刘利彬王济君绪玉萍刘越班青盖利刚李梅
Owner QILU UNIV OF TECH
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