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A kind of preparation method of fabric-based metal/metal hydroxide flexible composite material

A technology of hydroxide and composite materials, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor collectors, etc., can solve the problems of poor electrode capacitance performance and low energy density of capacitors, and achieve high specific capacitance , The effect of low equipment requirements, good flexibility and tensile properties

Active Publication Date: 2021-11-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing fabric-based metal / metal hydroxide flexible composite materials, so as to overcome the defects of poor capacitance performance of flexible composite electrodes and low energy density of capacitors in the prior art

Method used

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  • A kind of preparation method of fabric-based metal/metal hydroxide flexible composite material
  • A kind of preparation method of fabric-based metal/metal hydroxide flexible composite material
  • A kind of preparation method of fabric-based metal/metal hydroxide flexible composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Soak the cotton fabric in 0.25mol / L sodium hydroxide aqueous solution, the bath ratio is 1:40, and soak it at 85°C for 2 hours to obtain desized cotton fabric; soak the desized cotton fabric in 0.003mol / L In an aqueous solution composed of sodium borohydride and 0.001mol / L sodium hydroxide, the bath ratio is 1:50, ultrasonically disperse for 30min, and dry the cotton fabric after finishing ultrasonic to obtain pretreated cotton fabric.

[0043](2) Immerse the pretreated cotton fabric in an electroless plating bath composed of 0.2mol / L nickel sulfate, 0.4mol / L sodium hypophosphite, and 0.2mol / L sodium citrate. The bath ratio is 1:150. The temperature of the bath is 80° C., the pH value is 7, and the reaction time is 2 hours; it is washed with deionized water; and dried in an oven at 60° C. to obtain a fabric-based metal / metal oxide flexible composite material.

[0044] (3) The fabric-based metal / metal oxide flexible composite material was electrochemically oxidized i...

Embodiment 2

[0046] According to Example 1, the pretreated cotton fabric is soaked in 0.2mol / L nickel sulfate, 0.03mol / L copper sulfate, 0.4mol / L sodium hypophosphite, 0.2mol / L sodium citrate, 0.0005mol / L hydroxide In the electroless plating bath composed of potassium, the rest were the same as in Example 1 to obtain a fabric-based metal / metal hydroxide flexible composite material.

[0047] figure 1 It shows that the obvious micron spherical Ni simple substance is observed in the structure, which greatly improves the conductivity of cotton fabric and accelerates the speed of electron transport. At the same time, it can be seen that the nanosheets are interlaced with the sheets, forming well-developed macropores and mesopores, which greatly increases the specific surface area of ​​the material, shortens the distance of ion transmission, and optimizes the electrochemical performance of the electrode material.

[0048] figure 2 In (a), it can be seen that under different bending condition...

Embodiment 3

[0055] (1) Soak the cotton fabric in 0.25mol / L sodium hydroxide aqueous solution, the bath ratio is 1:40, and soak it at 85°C for 2 hours to obtain desized cotton fabric; soak the desized cotton fabric in 0.003mol / L In an aqueous solution composed of hydrazine hydrate and 0.001mol / L sodium hydroxide, the bath ratio is 1:150, ultrasonically disperse for 30min, and dry the cotton fabric after finishing ultrasonic to obtain pretreated cotton fabric.

[0056] (2) Immerse the pretreated cotton fabric in an electroless plating bath composed of 0.1mol / L nickel sulfate, 0.4mol / L sodium hypophosphite, and 0.2mol / L sodium citrate. The bath ratio is 1:150. The temperature of the bath is 60° C., the pH value is 10, and the reaction time is 2 hours; it is washed with deionized water; and dried in an oven at 60° C. to obtain a fabric-based metal / metal oxide flexible composite material.

[0057] (3) The fabric-based metal / metal oxide flexible composite material was electrochemically oxidized...

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Abstract

The invention relates to a preparation method of a fabric-based metal / metal hydroxide flexible composite material. The method comprises: immersing the desizing fabric in the aqueous phase dispersion liquid containing a strong reducing agent, ultrasonic treatment, immersing the obtained pretreated fabric in an electroless plating bath for reaction, and then carrying out electrochemical polarization. The method is simple, the raw materials are easy to obtain, the cost is low, and the requirements for equipment are low. The obtained composite material is soft, light, foldable, and has good stretch resistance performance, and the capacitance performance under bending conditions remains basically unchanged.

Description

technical field [0001] The invention belongs to the field of preparation of flexible composite materials, in particular to a preparation method of fabric-based metal / metal hydroxide flexible composite materials. Background technique [0002] With the emergence of wearable electronic devices and their potential applications in the fields of medical testing, military portable equipment and smart textiles, the development of flexible, lightweight, green and environmentally friendly electronic devices with high energy density and power density has become a current research topic. hotspots. At present, research on flexible conductive materials mainly focuses on coordinating the relationship between the flexibility and strength of electrode materials, and improving the porous structure of electrode materials to increase specific capacitance. However, traditional batteries, capacitors, and supercapacitors are generally not flexible, and it is difficult to be applied to flexible de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/68H01G11/86
CPCH01G11/24H01G11/30H01G11/68H01G11/86
Inventor 赵亚萍苏丽访金直航张明李明柳
Owner DONGHUA UNIV