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A kind of preparation method of flexible fabric capacitor electrode material

A technology for capacitor electrodes and flexible fabrics, which is applied in the field of preparation of flexible fabric capacitor electrode materials, can solve the problems of increased overall resistance of electrode materials, detachment of surface functional layers, unfavorable porous structures, etc., and is conducive to large-scale production, low cost, and enhance the effect of the interaction

Active Publication Date: 2022-01-21
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The combination of two electrode active materials with different properties and their adhesion on the flexible substrate are the main technical difficulties. At this stage, the method of multiple solution immersion is often used. The interface adhesion of this method Weakness can easily cause the surface functional layer to fall off. Another common method is to add the electrode active material to the binder and then coat it on the surface of the fabric. The addition of the binder may increase the overall resistance of the electrode material and is not conducive to the porous structure. Formation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of preparation method of flexible fabric capacitor electrode material
  • A kind of preparation method of flexible fabric capacitor electrode material
  • A kind of preparation method of flexible fabric capacitor electrode material

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Embodiment 1

[0027] The preparation method of the flexible textile capacitor electrode material with high active material loading in this embodiment, the steps are as follows:

[0028] (1) Prepare an aqueous solution of adipaldehyde with a concentration of 0.45%, adjust its pH value to 4.5 with hydrochloric acid, and prepare a carboxymethyl chitosan / viscose blended nonwoven with a carboxymethyl chitosan fiber content of 50% The cloth (2×4cm) was soaked in the adialdehyde aqueous solution for 5 minutes and then taken out, placed in an oven at 50° C. for cross-linking and drying for 1.2 hours to obtain a cross-linked carboxymethyl chitosan / viscose blended non-woven fabric.

[0029] (2) Immerse the cross-linked carboxymethyl chitosan / viscose blended non-woven fabric into the aqueous dispersion of carboxylated carbon nanotubes with a concentration of 1%, take it out after soaking for 30 minutes, and place it in an oven Dry at 80° C. for 0.5 hour, and obtain a carbon nanotube / non-woven fabric c...

Embodiment 2

[0034] The preparation method of the flexible textile capacitor electrode material with high active material loading in this embodiment, the steps are as follows:

[0035] (1) Prepare a glutaraldehyde aqueous solution with a concentration of 0.9%, adjust its pH value to 4.5 with hydrochloric acid, and make a carboxymethyl chitosan / viscose blended nonwoven with a carboxymethyl chitosan fiber content of 30% The cloth (2×4cm) was soaked in the glutaraldehyde aqueous solution for 5 minutes and then taken out, placed in an oven at 45° C. for 1.5 hours to cross-link and dry to obtain a cross-linked carboxymethyl chitosan / viscose blended non-woven fabric.

[0036] (2) Immerse the cross-linked carboxymethyl chitosan / viscose blended non-woven fabric into the aqueous dispersion of carboxylated carbon nanotubes with a concentration of 5%, take it out after soaking for 2 minutes, and place it in an oven Dry at 50° C. for 2 hours to obtain a carbon nanotube / non-woven fabric composite mater...

Embodiment 3

[0041] The preparation method of the flexible textile capacitor electrode material with high active material loading in this embodiment, the steps are as follows:

[0042] (1) Prepare a succinic dialdehyde aqueous solution with a concentration of 0.3%, adjust its pH value to 5 with hydrochloric acid, and make a carboxymethyl chitosan / viscose blended nonwoven with a carboxymethyl chitosan fiber content of 50% The cloth (2×4 cm) was immersed in the succinic dialdehyde aqueous solution for 8 minutes and then taken out, placed in an oven for cross-linking and drying at 60° C. for 1.0 hour to obtain a cross-linked carboxymethyl chitosan / viscose blended non-woven fabric.

[0043] (2) Immerse the cross-linked carboxymethyl chitosan / viscose blended non-woven fabric into the aqueous dispersion of carboxylated carbon nanotubes with a concentration of 2%, take it out after soaking for 10 minutes, and place it in an oven Dry at 60° C. for 1.5 hours, and obtain a carbon nanotube / non-woven ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention belongs to the technical field of supercapacitors, in particular to a preparation method of a flexible fabric capacitor electrode material with high active material loading. Firstly, the carboxymethyl chitosan / viscose blended non-woven fabric was swelled and cross-linked, then the multi-walled carbon nanotubes / non-woven fabric conductive material was prepared by the impregnation-drying method, and finally the pyrrole was synthesized by the in-situ chemical oxidation polymerization method. The monomer is polymerized onto the multi-walled carbon nanotube / non-woven conductive material to obtain a flexible fabric capacitor electrode material with high active material loading. The flexible base material that the present invention adopts is carboxymethyl chitosan / viscose blend non-woven fabric, and wherein carboxymethyl chitosan is a water-soluble polymer material, and its swelling in crosslinking agent aqueous solution promotes the ratio of fabric The surface area increases, and the pores in the fabric can be filled, which can greatly improve the space utilization rate of the fabric, and is conducive to a large amount of electroactive substances. It is an ideal supporting material for flexible electrodes.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, in particular to a preparation method of a flexible fabric capacitor electrode material with high active material loading. Background technique [0002] Electrochemical capacitors are a new type of energy storage device between traditional capacitors and batteries, and electrode materials are the key factors that determine the performance of supercapacitors. The fiber material has the characteristics of large specific surface that is difficult to match with other sheets. The fabric is used as the carrier of the energy storage unit, and the assembly of conductive nanostructured substances on its surface can form light battery electrodes and electrochemical capacitors. The fabric-based functional material has The advantages of being thin, soft, foldable, and easy to integrate with clothing are research hotspots in the field of materials today. [0003] Conductive polymer is a kind of condu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/36H01G11/86
CPCH01G11/24H01G11/36H01G11/86Y02E60/13
Inventor 张启潘玮刘斌国刘栋
Owner ZHONGYUAN ENGINEERING COLLEGE
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