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Self-repairing micro super capacitor and preparation method thereof

A supercapacitor, self-healing technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve problems such as volume increase and leakage, and achieve excellent printing performance, excellent repair performance, The effect of self-healing efficiency at room temperature with high electrochemical performance

Active Publication Date: 2019-09-20
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid electrolytes include aqueous electrolytes, organic liquid electrolytes, and ionic liquids. There is a risk of leakage. If complex packaging methods are used, the volume will increase, which is not allowed for micro-supercapacitors.

Method used

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  • Self-repairing micro super capacitor and preparation method thereof
  • Self-repairing micro super capacitor and preparation method thereof
  • Self-repairing micro super capacitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0056] (1) The 2-acrylamide-2-methyl-1-propanesulfonic acid (AMPSA) of 1.88g is dissolved in the PVA-124 aqueous solution that the mass fraction of 2g is 6wt%, use magnetic stirring (300-400 rev / Minutes) After completely dissolving, add photoinitiator 2959 (2-hydroxyl-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone) 4mg, N,N'-dimethyl Base bisacrylamide (MBAA) 8mg, lithium chloride 85mg mixed and stirred until completely and uniformly dissolved.

[0057] (2) 2g concentration of 0.15wt% PEDOT:PSS aqueous solution, 300mg concentration of 1wt% sodium carboxymethyl cellulose viscosifier was added to the small glass bottle, stirred vigorously at room temperature, then added 120mg concentration of 50wt % lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) aqueous solution was stirred continuously to make it evenly mixed. Then the above viscous mixture was reacted in an oven at 90° C. for 5 hours. Transfer the self-assembled PEDOT:PSS hydrogel into a syringe for later use.

[...

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Abstract

The invention provides a self-repairing micro super capacitor and a preparation method thereof. The super capacitor comprises a hydrogel polyelectrolyte template containing a micro interdigital structure groove, a hydrogel electrode filling the micro interdigital structure groove, and a self-repairing electrolyte membrane for packaging the super capacitor. The micro super capacitor has good rate performance, excellent area specific capacitance and relatively high electrochemical performance and room temperature self-repairing efficiency, and foreseeably has a wide application prospect in the field of self-repairing flexible energy storage devices.

Description

technical field [0001] The invention belongs to the field of supercapacitors, and relates to a micro supercapacitor, in particular to a self-repairing micro supercapacitor and a preparation method thereof. Background technique [0002] Thanks to the rapid development of Internet of Things technology, wearable devices have become more and more popular daily necessities in life. The development of these smart wearable devices has also put forward higher requirements for energy storage devices. Like many electronic devices, they are gradually miniaturized. Smaller volumes with higher power and energy density are the main technical development directions. It has been shown that micro-supercapacitors will become an important power supply carrier for future wearable electronic devices due to their ultra-thin, high power density and high cycle life (DOI: 10.1038 / NNANO.2016.196). Wearable energy storage devices require micro-planar supercapacitors to be flexible, bendable and even ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/48H01G11/56H01G11/78H01G11/84H01G11/86
CPCH01G11/26H01G11/48H01G11/56H01G11/78H01G11/84H01G11/86Y02E60/13
Inventor 张国平张博李金辉孙蓉
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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