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A kind of preparation method of polyacrylic acid flexible composite hydrogel electrolyte

A polyacrylic acid flexible and composite hydrogel technology, which is applied in the manufacture of hybrid capacitor electrolytes and hybrid/electric double layer capacitors, can solve the problems of ionic conductivity and mechanical properties that cannot meet the needs of portable electronic products such as flexible bending performance, and achieve Good memory effect, large-scale production expansion, and simple equipment

Active Publication Date: 2021-05-28
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, flexible and stretchable composite hydrogel electrolytes have a certain application basis, but the ionic conductivity and mechanical properties (stretching, flexible bending properties) of flexible electrolyte materials cannot meet the needs of future portable electronic products.

Method used

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  • A kind of preparation method of polyacrylic acid flexible composite hydrogel electrolyte
  • A kind of preparation method of polyacrylic acid flexible composite hydrogel electrolyte
  • A kind of preparation method of polyacrylic acid flexible composite hydrogel electrolyte

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A preparation method of polyacrylic acid flexible composite hydrogel electrolyte, the steps are as follows:

[0029] (1) Dissolve 0.075g sodium alginate in 10ml distilled water, stir and disperse with ultrasonic to form a solution, set aside;

[0030] (2) Add 1.5g of acrylic acid, 0.0075g of N-N'methylenebisacrylamide, 0.03g of octavinyl POSS and 0.075g of OP-10 into the solution obtained in step (1), stir and disperse for 10 minutes by ultrasonic waves;

[0031] (3) Add 0.0075g of ammonium persulfate to the solution obtained in step (2), stir and disperse for 10 minutes by ultrasonic;

[0032] (4) Put the reaction system obtained in step (3) in an oven at 60°C for 5 hours;

[0033] (5) Dry the hydrogel obtained in step (4) naturally for 36 hours;

[0034] (6) Soak the hydrogel obtained in (5) in 0.1 mmol / L phosphomolybdic acid solution for 18 hours to obtain a polyacrylic acid flexible composite hydrogel electrolyte.

Embodiment 2

[0036]A preparation method of polyacrylic acid flexible composite hydrogel electrolyte, which is different from Example 1 in that 0.075 g of sodium alginate in step (1) is changed to 0.100 g, and in step (2) 1.5 g of acrylic acid is changed to 2.0 g , 0.0075g N-N' methylene bisacrylamide becomes 0.0250g, 0.03g octavinyl POSS becomes 0.04g, 0.075g OP-10 becomes 0.100g, 0.0075g ammonium persulfate in step (3) becomes 0.0200 g azobisisobutylamidine hydrochloride, natural drying in step (5) for 36h becomes 42h, phosphomolybdic acid of 0.1mmol / L in step (6) becomes 0.2mmol / L phosphotungstic acid, step ( 6) Soak in medium for 18 hours to 24 hours.

Embodiment 3

[0038] A preparation method of polyacrylic acid flexible composite hydrogel electrolyte, which is different from Example 1 in that 0.075g of sodium alginate in step (1) is changed to 0.200g, and in step (2) 1.5g of acrylic acid is changed to 2.0g , 0.0075g N-N' methylenebisacrylamide becomes 0.0250g, 0.03g octavinyl POSS becomes 0.10g, 0.075g OP-10 becomes 0.125g, 0.0075g ammonium persulfate in step (3) becomes 0.0250 g, 36 hours of natural drying in step (5) changed to 48 hours, 0.1 mmol / L phosphomolybdic acid in step (6) changed to 0.3 mmol / L p-benzoquinone, and 18 hours of soaking in step (6) changed to 30 hours.

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Abstract

The invention discloses a preparation method of a polyacrylic acid flexible composite hydrogel electrolyte, which comprises the following steps: (1) dissolving sodium alginate in distilled water, stirring and dispersing by ultrasonic waves to form a solution, and standby; (2) dissolving acrylic acid , N-N'methylenebisacrylamide, octavinyl cage silsesquioxane and emulsifier are added to the solution obtained in step (1), stirred and dispersed by ultrasonic waves to form a reaction system; (3) the step (2) ) The resulting reaction system was added with an initiator and stirred to dissolve; (4) The product obtained in step (3) was placed in a 60°C oven for 5 hours to stand for a reaction to obtain a hydrogel; (5) The hydrogel obtained in step (4) was naturally aired Dry for 36‑54 hours; (6) Soak the hydrogel obtained in step (5) in the redox active substance solution for 18‑48 hours to obtain a polyacrylic acid flexible composite hydrogel electrolyte.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrolyte materials, and in particular relates to a preparation method of polyacrylic acid flexible composite hydrogel electrolyte. Background technique [0002] With the rapid development of flexible electronics science and miniaturization technology of electronic products, flexible, wearable, foldable and portable electronic devices have come out one after another. As a kind of flexible power supply, due to its excellent electrochemical properties such as fast charge and discharge speed, high power density, and long cycle life, as well as mechanical deformation properties such as stretchable, bendable, and foldable, flexible supercapacitors meet the requirements of wearable and portable Energy requirements of electronic devices. As the main component of supercapacitor, electrolyte directly affects its performance. Electrolytes commonly used in supercapacitors include liquid electrolyt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/84H01G11/56C08J3/075C08L33/02C08L5/04C08L83/07C08F220/06C08F222/38
CPCC08F220/06C08J3/075C08J2333/02C08J2405/04C08J2483/04H01G11/56H01G11/84C08F222/385Y02E60/13
Inventor 韩永芹王艺锟李廷希韩继源王全璐宋慧敏
Owner SHANDONG UNIV OF SCI & TECH