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Ink direct-writing 3D printing conductive polymer-based miniature supercapacitor and preparation method thereof

A technology of supercapacitors and conductive polymers, applied in the field of electrochemical energy storage, to achieve high electrochemical performance, high load capacity, and excellent electrochemical performance

Active Publication Date: 2022-05-27
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is still a great challenge to further obtain supercapacitors with high electrochemical performance by ink direct writing 3D printing without losing the printability of PEDOT:PSS at all.

Method used

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  • Ink direct-writing 3D printing conductive polymer-based miniature supercapacitor and preparation method thereof
  • Ink direct-writing 3D printing conductive polymer-based miniature supercapacitor and preparation method thereof
  • Ink direct-writing 3D printing conductive polymer-based miniature supercapacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment includes the following steps:

[0048] (1) 4g lithium fluoride was added to 80mL of 9M hydrochloric acid, dissolved for 30min, then 4g of MAX phase ceramic material was added to the mixed solution, etched at 35°C for 24h to obtain the MXene phase, and then washed to neutrality, The supernatant was collected by ultrasonic for 15min and then centrifuged for 30min to obtain MXene dispersion. Finally, freeze-dried MXene and PEDOT:PSS were obtained by freeze-drying MXene dispersion and commercial PH1000 aqueous solution;

[0049] (2) Stir and mix 2.4 mL of water and 0.6 mL of ethylene glycol to obtain 3 mL of mixed solvent (volume ratio is 4:1), weigh 0.18 g of MXene and add it to the mixed solvent, and ultrasonically disperse it for 60 minutes. 0.18g of PEDOT:PSS was added to the mixed solution, stirred for 120min and mixed evenly to obtain a total concentration of 120mg mL -1 of printable inks (1:1 mass ratio of PEDOT:PSS and MXene);

[0050] (3) Select a...

Embodiment 2

[0054] The mass ratio of PEDOT:PSS to MXene in Example 1 was changed to 3:1 (to keep the total concentration unchanged), and the rest were the same as in Example 1, and the final obtained micro-supercapacitor was recorded as EPPM-2.

Embodiment 3

[0056] The mass ratio of PEDOT:PSS to MXene in Example 1 was changed to 5:1 (to keep the total concentration unchanged), and the rest were the same as in Example 1, and the final obtained micro supercapacitor was recorded as EPPM-3.

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Abstract

The invention discloses an ink direct-writing 3D printing conductive polymer-based miniature supercapacitor and a preparation method thereof, and belongs to the technical field of electrochemical energy storage. The miniature supercapacitor comprises a substrate, a current collector, an interdigital electrode, a gel electrolyte and a packaging layer, and the electrode material is PEDOT: PSS / MXene composite hydrogel. PEDOT: PSS is subjected to phase separation through ethylene glycol, a conductive PEDOT phase is formed, and the conductivity of the material is improved. Through electrostatic interaction of MXene and PEDOT: PSS, aggregation is prevented, and it is guaranteed that the ink has excellent printability; meanwhile, the loose and porous structure is beneficial to transmission of electrolyte ions, and excellent electrochemical performance is obtained. The conductive polymer-based miniature supercapacitor has high area capacitance, rate capability, energy density, power density and excellent low temperature resistance, and has huge potential in the field of flexible energy storage.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage, and in particular relates to an ink direct writing 3D printing conductive polymer-based micro supercapacitor and a preparation method thereof. Background technique [0002] With the development of the Internet of Things, flexible wearable electronic devices have been widely used in smart home, medical, entertainment and other fields. Therefore, providing compatible flexible energy storage devices to promote the application of these electronic devices is a current research focus. Compared with batteries, supercapacitors have the advantages of high power density, fast charge-discharge rate, long cycle life, and high safety factor, and are a potential energy storage device. However, due to its light weight and small size, its energy density is generally low, which may not be sufficient to meet the continuous and stable power supply requirements of electronic devices. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/48H01G11/84H01G11/86
CPCH01G11/30H01G11/48H01G11/84H01G11/86Y02E60/13
Inventor 李乐孟健刘天西包旭冉
Owner JIANGNAN UNIV
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