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Stretchable, compressible and anti-freezing organic hydrogel electrolyte as well as preparation method and application thereof

A hydrogel and electrolyte technology, applied in compressible, antifreeze organic hydrogel electrolyte, and stretchable fields, can solve the problems of low-temperature performance compression performance degradation, etc., to achieve significant resistance changes, good low-temperature electrical properties, and good reversibility sexual effect

Active Publication Date: 2021-11-23
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 anti-freezing organic hydrogel electrolyte as well as preparation method and application thereof
  • Stretchable, compressible and anti-freezing organic hydrogel electrolyte as well as preparation method and application thereof
  • Stretchable, compressible and anti-freezing organic hydrogel electrolyte as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A Stretchable, Compressible, Freeze-resistant Organic Hydrogel Electrolyte S 1 A 4 And preparation method thereof, hydrogel electrolyte S 1 A 4 Including 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, the mass ratio of DMSO and water is 3:7. S 1 A 4 The mechanical and electrical properties of the hydrogel 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 constant temperature water bath at 90°C for 2 hours;

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

Embodiment 2

[0069] A Stretchable, Compressible, Freeze-resistant Organic Hydrogel 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, the mass ratio of DMSO and water is 3:7. S 1 A 1 The mechanical and electrical properties of the hydrogel 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, Freeze-resistant Organic Hydrogel 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, the mass ratio of DMSO and water is 3:7. S 1 A 8 The mechanical and electrical properties of the hydrogel are shown in Table 1.

[0075] Hydrogel Electrolyte S 1 A 8 The preparation method is the same as 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 hydrogel, and particularly relates to stretchable, compressible and anti-freezing organic hydrogel electrolyte as well as a preparation method and application thereof. The organic hydrogel electrolyte provided by the invention is formed by initiating polymerization of methacryloylethyl sulfobetaine and acrylamide through free radicals by taking dimethyl sulfoxide and water as solvents, and soybean protein is doped in a cross-linked network. The maximum fracture strain of the organic hydrogel electrolyte provided by the invention can reach 762.5%, the organic hydrogel electrolyte can still recover to an original state after being stretched by 500% or compressed by 80% for multiple times, and the organic hydrogel electrolyte has excellent mechanical properties. The room-temperature conductivity can reach 37.5 mS.cm<-1>, and the charging and discharging time is still 13s at -20 DEG C, so that the hydrogel electrolyte has good low-temperature electrical performance, and the technical effect of using the hydrogel electrolyte as a supercapacitor electrolyte can be realized. The hydrogel electrolyte has strain sensitivity, and the technical effect that the hydrogel electrolyte serves as a stable sensor material can be achieved.

Description

technical field [0001] The invention belongs to the field of functional macromolecular hydrogels, and in particular relates to stretchable, compressible and antifreeze organic hydrogel electrolytes, preparation methods and applications. Background technique [0002] Hydrogels are a special kind of material. It is formed by cross-linking hydrated polymer chain segments, and the gaps are filled with a large amount of water. Therefore, from the appearance point of view, hydrogels usually appear soft and wet. Due to the abundant hydrophilic groups in its chain 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, hydrogel materials have good designability and adjustability, which makes it possible to ...

Claims

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Application Information

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Patent Type & Authority Applications(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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