Preparation of a self-healing hydrogel electrolyte with ion channels and its application in all-solid supercapacitors

An ion channel and electrolyte technology, applied in the field of gel electrolyte preparation, can solve the problems of poor conductivity and achieve excellent conductivity, environmental friendliness and low cost

Active Publication Date: 2022-01-28
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the gel electrolytes reported so far are polymer gels based on polymers, which have poor conductivity.

Method used

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  • Preparation of a self-healing hydrogel electrolyte with ion channels and its application in all-solid supercapacitors
  • Preparation of a self-healing hydrogel electrolyte with ion channels and its application in all-solid supercapacitors
  • Preparation of a self-healing hydrogel electrolyte with ion channels and its application in all-solid supercapacitors

Examples

Experimental program
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Effect test

Embodiment 1

[0028] What this embodiment 1 described is the preparation method of the composite hydrogel electrolyte with ion channel and the making of supercapacitor thereof, and its steps are as follows:

[0029] (1) Preparation of composite hydrogel

[0030] 1. First, dissolve 0.15g of polyvinyl alcohol in water and heat it to dissolve into a clear solution, then add 0.6g of KOH solution drop by drop, the total volume of deionized water is 4mL, and the heating temperature is 70°C-90°C.

[0031] 2. Dissolve 168mg nucleoside guanine in KOH and H 3 BO 3 heated in the mixed solution to dissolve completely, H 3 BO 3 The mass is 12.4 mg, the mass of KOH is 34 mg, and the solution volume is 4 mL.

[0032] 3. Add the solution obtained in step 2 to the solution obtained in step 1 while hot, and naturally polymerize after mixing to obtain a self-healing hydrogel electrolyte with ion channels. The mixing temperature is controlled at 70°C.

[0033] (2) Preparation of all-solid supercapacitor d...

Embodiment 2

[0037] The experimental steps in this embodiment are basically the same as those in Example 1, except that the quality of the nucleoside guanine in step 2 is 120 mg.

Embodiment 3

[0039] The experimental procedure in this comparative example is basically the same as that in Example 1, except that the quality of the nucleoside guanine in step 2 is 200 mg.

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Abstract

The invention relates to a preparation method for constructing an ion channel with polyvinyl alcohol as a base at room temperature and its application as a solid electrolyte for a supercapacitor. The material uses polyvinyl alcohol and nucleoside guanine as the main raw materials, and at the same time, boric acid is added to cross-link the polyvinyl alcohol chain, and a hydroxide electrolyte is added to naturally polymerize at room temperature to form a gel. The material is used as a solid electrolyte in a supercapacitor, and has the characteristics of high ionic conductivity, good bendability, and strong self-healing ability. The preparation method of the material is simple, which provides a possibility for wide production and application.

Description

【Technical field】 [0001] The invention belongs to the field of preparation of gel electrolytes, in particular to the preparation of self-healing hydrogel electrolytes containing ion channels and their application in supercapacitors. 【Background technique】 [0002] As an excellent energy storage device, supercapacitors are unique in energy storage devices due to their advantages such as high power density, fast charge and discharge speed, and good cycle stability. Combining the advantages of traditional batteries and traditional capacitors, supercapacitors have broad market prospects. . The rapid development of wearable devices and portable electronics places more demands on supercapacitors. Electrolytes for supercapacitors include liquid electrolytes and solid electrolytes. The wide application of supercapacitors is severely limited due to the risk of liquid electrolyte leakage and the insufficient voltage range. The solid electrolyte can effectively avoid the problem tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/56H01G11/84
CPCH01G11/56H01G11/84Y02E60/13
Inventor 张琦杨烨王鲲鹏王磊
Owner QINGDAO UNIV OF SCI & TECH
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