Preparation method of fiber/graphene/copper sulfide flexible electrode material

A flexible electrode and graphene technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of insufficient adhesion between conductive materials and fabrics, and difficulty in forming conductive networks, so as to achieve maximum use value and increase Excellent contact interface and cycle performance

Active Publication Date: 2018-09-28
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the above-mentioned prior art, the present invention provides a preparation method of a fiber / graphene / copper sulfide flexible electrode material, which solves the problem that it is difficult to form a conductive network on the surface of a textile material, and the bonding force between the conductive material and the fabric is insufficient, and provides Materials that can be applied to supercapacitors and wearable products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The graphene oxide powder was added into deionized water, and ultrasonicated for 60 minutes to make a graphene oxide suspension with a concentration of 1.5 mg / L. Cotton fabrics were treated with 1mol / L sodium hydroxide solution at 100°C for 2h, then cleaned with deionized water, and dried in a drying oven at 110°C for 2h. The pretreated cotton fabric was dipped into the prepared graphene oxide suspension, stirred at room temperature for 30 min, then dried in a vacuum oven at 50°C for 2 h, and the dipping-drying process was repeated 20 times. Immerse the cotton / graphene oxide composite fabric in NaBH with a concentration of 0.5mol / L 4 The solution was stirred at room temperature for 12 hours, then taken out and washed three times with deionized water, dried at 100° C. for 2 hours, and reduced to obtain a cotton / graphene composite material.

[0027] The cotton cloth / graphene composite material was immersed in a hydrothermal reaction kettle containing copper sulfate and t...

Embodiment 2

[0029] The graphene oxide powder was added into deionized water, and the graphene oxide suspension with a concentration of 2 mg / L was prepared by ultrasonication for 30 min. Cotton fabrics were treated with 0.5mol / L sodium bicarbonate solution at 90°C for 3h, then cleaned with deionized water, and dried in a drying oven at 100°C for 2.5h. The pretreated cotton fabric was dipped into the prepared graphene oxide suspension, stirred at room temperature for 20 min, then dried in a vacuum oven at 50°C for 3 h, and the dipping-drying process was repeated 30 times. Immerse the cotton / graphene oxide composite fabric in NaBH with a concentration of 0.1mol / L 4 The solution was stirred at room temperature for 12 hours, then taken out and washed three times with deionized water, dried at 100° C. for 2 hours, and reduced to obtain a cotton / graphene composite material.

[0030] Immerse the cotton / graphene composite material into a hydrothermal reactor containing copper chloride and carbon ...

Embodiment 3

[0032] The graphene oxide powder was added into deionized water, and ultrasonically charged for 60 minutes to make a graphene oxide suspension with a concentration of 2.5 mg / L. Cotton fabrics were treated with 1mol / L sodium hydroxide solution at 110°C for 1h, then cleaned with deionized water, and dried in a 90°C drying oven for 3h. The pretreated cotton fabric was dipped into the prepared graphene oxide suspension, stirred at room temperature for 40 min, then dried in a vacuum oven at 40°C for 2.5 h, and the dipping-drying process was repeated 20 times. The cotton / graphene oxide composite fabric was placed in a high-temperature tube furnace at a heating rate of 2°C / min at 250°C, N 2 Under atmospheric conditions, the cotton / graphene composite material was obtained through high-temperature reaction for 3 hours.

[0033] The cotton / graphene composite was immersed in a hydrothermal reactor containing PEG-400 (0.1%), copper acetate and thioacetamide solution (copper:sulfur molar ...

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Abstract

The invention discloses a preparation method of a fiber / graphene / copper sulfide flexible electrode material. The preparation method is characterized by comprising the following steps: A, soaking pretreated fiber fabric into an oxidized graphene suspension and drying, and repeating the step several times to obtain a fiber / oxidized graphene material, wherein the oxidized graphene suspension is obtained by dispersing oxidized graphene powder into deionized water ultrasonically; B, carrying out in-situ reduction on the fiber / oxidized graphene material to obtain a fiber / graphene material; and C, soaking the fiber / graphene material obtained in the step B into a hydrothermal reactor containing copper salt and a sulfur-containing precursor solution, and carrying out heating reaction synthesis to obtain the fiber / graphene / copper sulfide flexible electrode material. According to the material obtained by the method, a carbon material with high electrical conductivity is compounded with copper sulfide with high specific capacitance and low electrical conductivity, so that the advantages of the carbon material and copper sulfide are fully developed. The material has relatively high area specific capacitance and power characteristic, and is excellent in cycle performance.

Description

technical field [0001] The invention relates to a preparation method of a flexible electrode material, in particular to a preparation method of a fiber / graphene / copper sulfide flexible electrode material. Background technique [0002] Electrochemical capacitors are widely used in fields such as hybrid electric vehicles, communications, national defense, and wearable electronics based on their special features such as high capacity and high power density. As today's electronic devices are becoming thinner and more flexible, portable and wearable electronic devices such as flexible displays, distributed sensors, electronic paper and wearable multimedia devices are increasingly entering people's daily lives. However, traditional electrochemical capacitors are bulky, heavy, and have a fixed shape, which is far from meeting the development requirements of current flexible electronic devices. There is an urgent need to develop flexible electrochemical capacitors and their electro...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/32H01G11/26H01G11/86
CPCH01G11/26H01G11/30H01G11/32H01G11/86Y02E60/13
Inventor 王薇张技术孙银银陶金吴建兵穆红郑宝伟何亚男
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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