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Preparation method of fiber/graphene/carbon quantum dots/FeOF flexible electrode material

A technology of carbon quantum dots and flexible electrodes, which is applied in the field of preparation of flexible electrode materials, can solve the problems of difficulty in forming a conductive network, insufficient adhesion between conductive materials and fabrics, etc. Effect

Active Publication Date: 2019-08-16
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 method for preparing a fiber / graphene / carbon quantum dot / FeOF 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. problem, providing 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] Add the graphene oxide powder into deionized water, and ultrasonicate for 60 minutes to make a graphene oxide suspension with a concentration of 1.5 mg / mL. 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 cloth / graphene oxide composite fabric in the carbon quantum dot solution with a concentration of 0.03mg / ml, react in the reactor at 120°C for 2h, then take it out and wash it with deionized water for 3 times, and dry it at 100°C for 2h to obtain Cotton / graphene / carbon quantum dot composite.

[0027] The cotton / graphene / carbon quantum dot composite was impregnated with FeF 3 ·3H 2 O and ethanol (mass (g): volume (ml) ...

Embodiment 2

[0032]The graphene oxide powder was added into deionized water, and ultrasonicated for 30 min to prepare a graphene oxide suspension with a concentration of 2 mg / mL. 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 cloth / graphene oxide composite fabric in the carbon quantum dot solution with a concentration of 0.04mg / ml, react in the reactor at 110°C for 3h, then take it out and wash it with deionized water for 3 times, and dry it at 100°C for 2h to obtain Cotton / graphene / carbon quantum dot composite.

[0033] Immersion of cotton / graphene / carbon quantum dot composites into FeF 3 ·3H 2 O and ethanol (mass (g): volume (ml...

Embodiment 3

[0035] The graphene oxide powder was added into deionized water, and ultrasonicated for 30 min to prepare a graphene oxide suspension with a concentration of 3 mg / mL. The polyester fabric was treated with 2mol / L sodium bicarbonate solution at 120°C for 1.5h, then cleaned with deionized water, and dried in an oven at 80°C for 3h. The pretreated polyester was impregnated into the prepared graphene oxide suspension, stirred at room temperature for 50 min, then dried in a vacuum oven at 60°C for 2.5 h, and the dipping-drying process was repeated 40 times. Immerse the polyester fabric / graphene oxide composite fabric in a carbon quantum dot solution with a concentration of 0.06mg / ml, react in a reaction kettle at 120°C for 3h, then take it out and wash it with deionized water for 3 times, and dry it at 100°C for 2h. Obtain polyester / graphene / carbon quantum dot composite material.

[0036] Immersion of polyester fabric / graphene / carbon quantum dot composites into FeF 3 ·3H 2 O and ...

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Abstract

The invention discloses a preparation method of a fiber / graphene / carbon quantum dots / FeOF flexible electrode material, which comprises the following steps: A, impregnating pretreated fiber fabric in asuspension containing graphene oxide and drying the fiber fabric, and repeating the step several times to obtain a fiber / graphene oxide material; B, immersing the material obtained in step A in a hydrothermal reaction vessel containing carbon quantum dots, and synthesizing a fiber / graphene / carbon quantum dots flexible electrode material by heating reaction; and C, immersing the material obtainedin step B in a hydrothermal reaction vessel containing FeF3.3H2O and alcohol solution, and synthesizing a fiber / graphene / carbon quantum dots / FeOF flexible electrode material by heating reaction. The material prepared by the method of the invention has higher area specific capacitance and power characteristics and superior 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 / carbon quantum dot / FeOF flexible electrode material. Background technique [0002] Electrochemical capacitors are widely used in fields such as hybrid 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): H01G11/24H01G11/30H01G11/36H01G11/86
CPCH01G11/24H01G11/30H01G11/36H01G11/86Y02E60/13
Inventor 王薇陆鑫张技术李涛刘绍文
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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