Flexible fabric electrode as well as preparation method and application thereof

A flexible fabric and electrode technology, applied in chemical instruments and methods, hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, etc., can solve the problem of poor bonding between active materials and fabric skeletons, difficulty in maintaining the porosity of electrode materials, and affecting activity Effective use of materials and other issues to achieve the effect of facilitating wettability, enhancing electrochemical activity, and enhancing adhesion

Active Publication Date: 2019-07-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology currently has the following problems: First, the loading of the active material is too low, or it is difficult to maintain the porosity of the electrode material when the loading of the active material is high, which leads to a low specific surface area of ​​the material, which affects the effective use of the active material and the electrode. performance improvement
The second is that the binding force between the active material and the fabric skeleton is poor, resulting in high interfacial impedance, which further affects the electrode performance of the fiber fabric.

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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  • Flexible fabric electrode as well as preparation method and application thereof
  • Flexible fabric electrode as well as preparation method and application thereof
  • Flexible fabric electrode as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a flexible fabric electrode and a preparation method thereof.

[0031] The preparation method of the flexible fabric electrode is as follows:

[0032] (1) Soak cotton fabric (2×4cm) in deionized water, absolute ethanol and deionized water in sequence, and ultrasonically clean them for 10 min respectively to remove inorganic and organic impurities.

[0033] (2) Soak the cleaned cotton fabric in 200ml of hydrochloric acid-Tris buffer solution (pH 7), add 100mg of dopamine monomer, and polymerize for 12h under stirring conditions.

[0034] (3) The polymerized fabric is taken out from the buffer solution, and the physically adsorbed polydopamine particles are washed out with deionized water.

[0035] (4) Soak the rinsed fabric in activated carbon solution (0.5 mg / ml) for 10 min, dry at 80°C for 20 min, and cycle 5 times.

[0036] (5) The dried fabric loaded with activated carbon was carbonized for 1 h under the protection of nitrogen, the carboniz...

Embodiment 2

[0038] This embodiment provides a flexible fabric electrode and its preparation method and application.

[0039] The preparation method of the flexible fabric electrode is as follows:

[0040] (1) The linen fabric (2×4cm) was soaked in deionized water, absolute ethanol and deionized water in sequence, and ultrasonically cleaned for 10 min respectively to remove inorganic and organic impurities.

[0041] (2) Soak the cleaned hemp fabric in 200ml hydrochloric acid-Tris buffer solution (pH 8), add different concentrations of dopamine monomer (100mg, 200mg, 400mg, 600mg, 1000mg), and polymerize for 48h under stirring conditions .

[0042] (3) The polymerized fabric is taken out from the buffer solution, and the physically adsorbed polydopamine particles are washed out with deionized water.

[0043] (4) Soak the rinsed fabric in activated carbon solution (1 mg / ml) for 10 min, dry at 80°C for 20 min, and cycle 10 times.

[0044] (5) The dried fabric loaded with activated carbon w...

Embodiment 3

[0047] This embodiment provides a flexible fabric electrode and a preparation method thereof.

[0048] The preparation method of the flexible fabric electrode is as follows:

[0049] (1) The polyester fabric (2×4cm) was immersed in deionized water, absolute ethanol and deionized water in sequence, and ultrasonically cleaned for 10 min respectively to remove inorganic and organic impurities.

[0050] (2) Soak the cleaned polyester fabric in 200ml of hydrochloric acid-Tris buffer solution (pH 9), add 400mg of dopamine monomer, and polymerize for 36h under stirring conditions.

[0051] (3) The polymerized fabric is taken out from the buffer solution, and the physically adsorbed polydopamine particles are washed out with deionized water.

[0052] (4) Soak the rinsed fabric in the carbon nanotube solution (2 mg / ml) for 10 min, dry at 80° C. for 20 min, and cycle 7 times.

[0053] (5) Carbonize the dried fabric loaded with carbon nanotubes under the protection of nitrogen for 1 ho...

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Abstract

The invention belongs to the technical field of supercapacitors, and particularly relates to a flexible fabric electrode as well as a preparation method and application thereof. According to the method, the cleaned fiber fabric is subjected to interface modification by dopamine, and a porous interface layer composed of polydopamine nanoparticles is formed on the fiber fabric; then an electrochemical active material is loaded by utilizing the excellent adhesion of the porous interface layer, so that the adhesion effect of the active material and the fiber fabric substrate is enhanced; and finally the flexible fabric electrode with high loading capacity, large specific surface area and high conductivity is obtained through high-temperature carbonization. The method is simple and efficient, and a universal method for functionalization of the fabric electrode is provided. The surface of the existing fabric is changed by the simple method, the low-cost fabric on the market is converted intothe flexible wearable supercapacitor with excellent electrochemical performance, so that the flexible fabric electrode has wide application in flexible energy storage.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and in particular relates to a flexible fabric electrode and its preparation method and application. Background technique [0002] The development of wearable electronic products has increased the demand for flexible energy storage devices. Among them, flexible supercapacitors have gradually become a research hotspot due to their advantages such as fast charging and discharging. The key to high-performance flexible supercapacitors lies in flexible electrode materials. At present, fiber fabrics (cotton, hemp, chemical fibers, etc.) are one of the commonly used materials for flexible electrode materials, which have internal porosity, good wearability, and good conductivity after heat treatment. At the same time, the fiber fabric has the advantages of mature weaving technology, mass production, low cost and easy market availability, so it has received widespread attention. [0003] A singl...

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 Applications(China)
IPC IPC(8): H01G11/86H01G11/26H01G11/36H01G11/44H01G11/30D06M15/37C01B32/205
CPCC01B32/205D06M15/37H01G11/26H01G11/30H01G11/36H01G11/44H01G11/86Y02E60/13
Inventor 王小慧陈儒维孙润仓杨洋黄权波
Owner SOUTH CHINA UNIV OF TECH
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