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Method for assembling asymmetric supercapacitor based on PVA-PMA-SA-TA self-healing gel

A PVA-PMA-SA-TA, supercapacitor technology, applied in the direction of electrolytic capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve the problems of small voltage window of supercapacitors and easy deformation of supercapacitors, and achieve high cost performance and high Effect of energy density and power density, wide operating voltage

Pending Publication Date: 2022-03-29
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it solves the problem that the voltage window of the integrated supercapacitor is too small and the supercapacitor assembled by the lamination method is easy to deform.

Method used

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  • Method for assembling asymmetric supercapacitor based on PVA-PMA-SA-TA self-healing gel

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0032] Dissolve 1 g of polyvinyl alcohol PVA into 10 mL of deionized water, and stir at 95°C for 2 hours, the solution becomes clear and transparent. Dissolve 0.15 g of sodium alginate SA and 1.5 g of methacrylic acid MA into the PVA solution and stir for 3 hours. Slowly add 1.5g of ammonium persulfate APS into the solution, and put the solution at 60°C for 2 hours to make methacrylic acid MA polymerized into polymethacrylic acid PMA; after the reaction, take it out, cool it naturally, and use a freeze dryer Freeze dried. Soak the freeze-dried gel in 5 wt.% tannic acid for 24 hours at room temperature. The PVA-PMA-SA-TA hydrogel can be obtained.

[0033] 0.16g MoS 2and 0.275mL of pyrrole Py were added to 10mL of 0.5mol / L sulfuric acid solution, and dissolved by ultrasound for 30 minutes. Cut the PVA-PMA-SA-TA hydrogel into a cube with a length, width, and height of 2 cm, 2 cm, and 0.5 cm, put it into the obtained solution, and let it stand for 20 minutes. Dissolve 0.912g ...

specific Embodiment approach 2

[0037] Dissolve 1 g of polyvinyl alcohol PVA into 10 mL of deionized water, and stir at 95°C for 2 hours, the solution becomes clear and transparent. Dissolve 0.2g sodium alginate SA and 2g methacrylic acid MA into the PVA solution and stir for 3 hours. Slowly add 2g of ammonium persulfate APS into the solution, and place the solution at 60°C for 2 hours to make methacrylic acid MA polymerized into polymethacrylic acid PMA; take it out after the reaction, cool naturally, and freeze it with a freeze dryer dry. Soak the freeze-dried gel in 10 wt.% tannic acid for 36 hours at room temperature. The PVA-PMA-SA-TA hydrogel can be obtained.

[0038] 0.32g MoS 2 and 0.275mL of pyrrole Py were added to 10mL of 0.5mol / L sulfuric acid solution, and dissolved by ultrasound for 30 minutes. Cut the PVA-PMA-SA-TA hydrogel into a cube with a length, width, and height of 6 cm, 6 cm, and 0.5 cm, put it into the obtained solution, and let it stand for 20 minutes. Dissolve 0.912g of ammonium...

specific Embodiment approach 3

[0042] Dissolve 1 g of polyvinyl alcohol PVA into 10 mL of deionized water, and stir at 95°C for 2 hours, the solution becomes clear and transparent. Dissolve 0.25g sodium alginate SA and 2.5g methacrylic acid MA into the PVA solution and stir for 3 hours. Slowly add 2.5g of ammonium persulfate APS into the solution, put the solution at 60°C for 2 hours to make methacrylic acid MA polymerize into polymethacrylic acid PMA; take it out after reaction, cool naturally, and use a freeze dryer Freeze dried. Soak the freeze-dried gel in 15wt.% tannic acid for 48 hours at room temperature. The PVA-PMA-SA-TA hydrogel can be obtained.

[0043] 0.64g MoS 2 and 0.275mL of pyrrole Py were added to 10mL of 0.5mol / L sulfuric acid solution, and dissolved by ultrasound for 30 minutes. Cut the PVA-PMA-SA-TA hydrogel into a cube with a length, width, and height of 10 cm, 10 cm, and 0.5 cm, put it into the obtained solution, and let it stand for 20 minutes. Dissolve 0.912g of ammonium persul...

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Abstract

The invention discloses an assembling method of an asymmetric supercapacitor based on PVA (Polyvinyl Acetate)-PMA (Poly Methyl Acetate)-SA (Styrene Acetate)-TA (Triacrylate) self-healing gel. According to the invention, two integrated supercapacitors made of different electrode materials are cut apart along the electrolyte by using the self-healing performance of the electrolyte, and then the two supercapacitors made of different electrode materials can be assembled into a new asymmetric supercapacitor through the self-healing performance of the electrolyte. According to the invention, the problems that the voltage window of an integrally prepared super capacitor is small and the super capacitor assembled by a lamination method is easy to deform are solved at the same time. The method has the advantages of simplicity, high efficiency and high cost performance. The material prepared by the method has the characteristics of wider working voltage, higher energy density and power density, foldability, self-healing and the like.

Description

technical field [0001] The invention belongs to the field of supercapacitor new material energy storage, and in particular relates to an assembly method of an asymmetric capacitor based on self-healing gel. Background technique [0002] In recent years, stretchable and healable electronics have attracted much attention due to their excellent flexibility, high reliability, and stable resistance to deformation. In order to better meet the functional requirements of the above-mentioned electronic devices, it is an urgent need for researchers to develop corresponding energy storage devices with stretchable and repairable properties. Currently, self-healing flexible supercapacitors have been widely studied due to their long-cycle stability, fast charge-discharge, high power density, and self-recovery ability after continuous mechanical deformation or physical damage. [0003] Conventional flexible supercapacitors usually have a layered multilayer structure consisting of a polyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/56H01G11/86H01G11/22
CPCH01G11/56H01G11/86H01G11/22
Inventor 辛青花凯浩王琳林君臧月
Owner HANGZHOU DIANZI UNIV
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