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Ink direct-writing zinc ion hybrid miniature supercapacitor and preparation method and application thereof

A technology of supercapacitors and zinc ions, applied in the field of electrochemical energy storage, to achieve good rate performance and cycle stability, high energy density and power density

Pending Publication Date: 2022-07-26
HEBEI BEISU PIPE IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no patent has been reported on the use of 3D printing technology to construct a planar zinc-ion mixed micromass

Method used

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  • Ink direct-writing zinc ion hybrid miniature supercapacitor and preparation method and application thereof
  • Ink direct-writing zinc ion hybrid miniature supercapacitor and preparation method and application thereof
  • Ink direct-writing zinc ion hybrid miniature supercapacitor and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Zn(NO 3 ) 2 ·6H 2 ZIF-8 particles of O and 2-methylimidazole are mixed with PVP in a mass ratio of 1:(0.5-2) to obtain a material ZPC without pyrolysis. Its structure is as follows figure 1 shown.

[0031] (2) Put the ZPC into a tube furnace under an argon atmosphere at a constant temperature of 700-850 °C for 2-4 hours, and after 1-3M HCl acid treatment, a porous material HCF is obtained, and its structure is as follows figure 2 shown.

[0032] (3) Mix the obtained HCF and KOH according to the mass ratio of 1:(1.5-5), stir and dissolve at 65-90 ° C and stir and dry, and then keep the tube furnace in an argon atmosphere at a constant temperature of 700-850 ° C for 2 -4h, the multi-layer porous carbon material PCF was obtained, and its structure was as follows image 3 shown.

[0033] (4) The obtained multi-layer porous carbon material, conductive carbon black, and polyvinylidene fluoride mass ratio range is (7-8.5): (1-1.5): (1:1.5) grinding in a mortar for 2...

Embodiment 2

[0037] (1) Zn(NO 3 ) 2 ·6H 2 The ZIF-8 particles of O and 2-methylimidazole were mixed with PVP in a mass ratio of 1:(1-3) to obtain ZPC without pyrolysis.

[0038] (2) Put the ZPC into a tube furnace under an argon atmosphere at a constant temperature of 600-950°C for 1.5-5h, and after being treated with 0.5-2M HCl acid, the porous material HCF is obtained.

[0039] (3) Mix the obtained HCF and KOH according to the mass ratio of 1:(2.5-4), stir and dissolve at 70-85 ° C and stir and dry, and then keep a constant temperature at 600-950 ° C in a tube furnace under an argon atmosphere for 1 -6h, multi-layer porous carbon material PCF was obtained.

[0040] (4) The obtained multi-layer porous carbon material, conductive carbon black, and polyvinylidene fluoride mass ratio range is (7-8): (2-1.5): (2-1.5) and grind in a mortar for 3-5h, get the positive electrode material ink;

[0041] (5) Disperse the conductive silver glue in N-methylpyrrolidone to ultrasonically prepare in...

Embodiment 3

[0044] (1) Zn(NO 3 ) 2 ·6H 2 ZIF-8 particles of O and 2-methylimidazole are mixed with PVP in a mass ratio of 1:(1-2) to obtain a material ZPC without pyrolysis. Its structure is as follows figure 1 shown.

[0045] (2) Put the ZPC into a tube furnace under an argon atmosphere at a constant temperature of 350-900° C. for 1-4 hours, and after being treated with 0.25-1.25M HCl acid, the porous material HCF is obtained.

[0046] (3) Mix the obtained HCF and KOH according to the mass ratio of 1:(1.5-4), stir and dissolve at 45-95 ° C and stir and dry, and then keep the tube furnace in an argon atmosphere at a constant temperature of 3.5 at 250-950 ° C -6.5h, multi-layer porous carbon material PCF was obtained.

[0047] (4) The obtained multi-layer porous carbon material, conductive carbon black, and polyvinylidene fluoride mass ratio range is (5.5-8.5): (1-3.5): (1-3.5) Grind in a mortar for 5-9h, get the positive electrode material ink;

[0048] (5) Disperse the conductive s...

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PUM

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Abstract

The invention provides an ink direct-writing zinc ion hybrid miniature supercapacitor and a preparation method and application thereof, a metal organic framework material is used as a sacrificial template, polyvinylpyrrolidone is used as a carbon source, a multi-layer porous carbon material is obtained by high-temperature calcination and activation of potassium hydroxide, the multi-layer porous carbon material is used as a positive electrode, and in-situ electrogalvanizing is used as a negative electrode, so that the ink direct-writing zinc ion hybrid miniature supercapacitor is obtained. A zinc ion hybrid miniature supercapacitor is constructed on a flexible substrate by means of an ink direct writing technology. The hybrid miniature supercapacitor prepared by the invention has high energy density and power density, and also has good rate capability and cycling stability.

Description

technical field [0001] The invention relates to the technical field of electrochemical energy storage, and more particularly to an ink direct-writing zinc-ion mixed micro supercapacitor and a preparation method and application thereof. Background technique [0002] Supercapacitors are a new type of energy storage device with the characteristics of fast charge and discharge, high power density and long cycle life. At the same time, they also have excellent performance in solving environmental problems and reducing costs. It is widely used in portable electronic equipment, rail transportation and aerospace equipment. However, the energy density of commercial supercapacitors still needs to be improved. Therefore, the preparation of electrode materials with higher power density and energy density and excellent rate capability has become a research hotspot of researchers from all over the world. Hybrid supercapacitor refers to a supercapacitor structure composed of the electrod...

Claims

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Application Information

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IPC IPC(8): H01G11/34H01G11/24H01G11/86H01G11/68H01G11/70H01G11/28H01G11/84H01G11/62
CPCH01G11/34H01G11/24H01G11/86H01G11/68H01G11/70H01G11/28H01G11/84H01G11/62Y02E60/13
Inventor 刘树生佟照刚谷一帆王希军彭守健刘峥荆冰许鑫华
Owner HEBEI BEISU PIPE IND
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