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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, easy operation and simple equipment

Active Publication Date: 2020-01-14
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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  • Preparation method of polyacrylic acid flexible composite hydrogel electrolyte
  • Preparation method of polyacrylic acid flexible composite hydrogel electrolyte
  • Preparation method of polyacrylic acid flexible composite hydrogel electrolyte

Examples

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Embodiment 1

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

[0029] (1) Dissolve 0.075g of sodium alginate in 10ml of distilled water, stir and use ultrasonic dispersion to form a solution, for use;

[0030] (2) Add 1.5 g acrylic acid, 0.0075 g N-N' methylene bisacrylamide, 0.03 g octavinyl POSS and 0.075 g OP-10 to the solution obtained in step (1), stir and use ultrasonic dispersion for 10 minutes;

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

[0032] (4) The reaction system obtained in step (3) was allowed to stand for 5 hours in an oven at 60°C;

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

[0034] (6) The hydrogel obtained in (5) was soaked in a 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 in step (1), 0.075g of sodium alginate is changed to 0.100g, and in step (2), 1.5g of acrylic acid is changed to 2.0g , 0.0075gN-N'methylenebisacrylamide becomes 0.0250g, 0.03g octavinyl POSS becomes 0.04g, 0.075gOP-10 becomes 0.100g, and in step (3) 0.0075g ammonium persulfate becomes 0.0200 g azobisisobutylamidine hydrochloride, in step (5), natural drying for 36h becomes 42h, in step (6), 0.1mmol / L phosphomolybdic acid becomes 0.2mmol / L phosphotungstic acid, step ( 6) Soak in 18h to 24h.

Embodiment 3

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

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Abstract

The invention discloses a preparation method of a polyacrylic acid flexible composite hydrogel electrolyte. The preparation method comprises the following steps of: (1) dissolving sodium alginate in distilled water, performing stirring, and carrying out ultrasonic dispersion to form a solution for later use; (2) adding acrylic acid, N-N'-methylene bisacrylamide, octavinyl polyhedral oligomeric silsesquioxane and an emulsifier into the solution obtained in the step (1), performing stirring, and carrying out ultrasonic dispersion to form a reaction system; (3) adding an initiator into the reaction system obtained in the step (2), and performing stirring and dissolving; (4) putting the product obtained in the step (3) into an oven at a temperature of 60 DEG C, performing standing and reactingfor 5 hours to obtain hydrogel; (5) naturally airing the hydrogel obtained in the step (4) for 36-54 hours; and (6) soaking the hydrogel obtained in the step (5) in a redox active substance solutionfor 18-48 hours to obtain the polyacrylic acid flexible composite hydrogel electrolyte.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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
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