Preparation of self-healing hydrogel electrolyte with ion channel and application of self-healing hydrogel electrolyte in all-solid-state supercapacitor

Abstract

The invention relates to a preparation method for constructing an ion channel at room temperature by taking polyvinyl alcohol as a substrate and application of the ion channel as a solid electrolyte of a supercapacitor. According to the material, polyvinyl alcohol and nucleoside guanine are taken as main raw materials, boric acid and polyvinyl alcohol chains are added for crosslinking, a hydroxideelectrolyte is added, natural polymerization is carried out at room temperature, and gel is formed. The material is used as a solid electrolyte to be applied to a supercapacitor, and has the characteristics of high ionic conductivity, good bendability, strong self-healing capability and the like. The preparation method of the material is simple, and provides possibility for wide production and application.

Description

Technical Field

[0001] The invention belongs to the field of preparation of gel electrolytes, and particularly relates to the preparation of self-healing hydrogel electrolytes containing ion channels and their applications in supercapacitors.

Background technique

[0002] As an excellent energy storage device, supercapacitors are unique in energy storage devices due to their high power density, fast charge and discharge speed, and good cycle stability. They combine the advantages of traditional batteries and traditional capacitors, and have broad market prospects. . The rapid development of wearable devices and portable electronic products places more demands on supercapacitors. The electrolyte of supercapacitors includes two types: liquid electrolyte and solid electrolyte. Among them, due to the danger of liquid electrolyte leakage and the insufficient voltage range, the wide application of supercapacitors is severely restricted. The solid electrolyte can effectively avoi...

Examples

Embodiment 1

[0028] This embodiment 1 describes the preparation method of the composite hydrogel electrolyte with ion channels and the preparation of the supercapacitor. The steps are as follows:

[0029] (1) Preparation of composite hydrogel

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

[0031] 2. Dissolve 168mg of 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 KOH mass is 34 mg, and the solution volume is 4 mL.

[0032] 3. The solution obtained in step 2 is added to the solution obtained in step 1 while it is hot, and the self-healing hydrogel electrolyte with ion channels is obtained by natural polymerization after mixing, and the mixing temperature is controlled at 70°C.

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

Embodiment 2

[0037] The experimental procedure in this example is basically the same as that in Example 1, except that the mass of the nucleoside guanine in step 2 is 120 mg.

Embodiment 3

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

Technical Field

[0001] The invention belongs to the field of preparation of gel electrolytes, and particularly relates to the preparation of self-healing hydrogel electrolytes containing ion channels and their applications in supercapacitors.

Background technique

[0002] As an excellent energy storage device, supercapacitors are unique in energy storage devices due to their high power density, fast charge and discharge speed, and good cycle stability. They combine the advantages of traditional batteries and traditional capacitors, and have broad market prospects. . The rapid development of wearable devices and portable electronic products places more demands on supercapacitors. The electrolyte of supercapacitors includes two types: liquid electrolyte and solid electrolyte. Among them, due to the danger of liquid electrolyte leakage and the insufficient voltage range, the wide application of supercapacitors is severely restricted. The solid electrolyte can effectively avoi...

Examples

Embodiment 1

[0028] This embodiment 1 describes the preparation method of the composite hydrogel electrolyte with ion channels and the preparation of the supercapacitor. The steps are as follows:

[0029] (1) Preparation of composite hydrogel

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

[0031] 2. Dissolve 168mg of 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 KOH mass is 34 mg, and the solution volume is 4 mL.

[0032] 3. The solution obtained in step 2 is added to the solution obtained in step 1 while it is hot, and the self-healing hydrogel electrolyte with ion channels is obtained by natural polymerization after mixing, and the mixing temperature is controlled at 70°C.

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

Embodiment 2

[0037] The experimental procedure in this example is basically the same as that in Example 1, except that the mass of the nucleoside guanine in step 2 is 120 mg.

Embodiment 3

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

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