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Hierarchical porous carbon cloth material, preparation method thereof and application of hierarchical porous carbon cloth material as supercapacitor electrode

A hierarchically porous, hierarchically porous technology, applied in hybrid capacitor electrodes, nanotechnology for materials and surface science, hybrid/electric double-layer capacitor manufacturing, etc. The problems of low specific surface area of ​​pure carbon materials can shorten the mass transfer distance, improve the utilization rate of energy storage, and increase the active surface area.

Inactive Publication Date: 2021-03-23
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrode materials have a great influence on the energy storage performance of supercapacitors. Carbon materials are the electrode materials with the earliest research and the most mature technology. However, pure carbon materials have a low specific surface area and relatively few active sites, and their energy density is far from meeting the rapid development of the energy market. development needs

Method used

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  • Hierarchical porous carbon cloth material, preparation method thereof and application of hierarchical porous carbon cloth material as supercapacitor electrode
  • Hierarchical porous carbon cloth material, preparation method thereof and application of hierarchical porous carbon cloth material as supercapacitor electrode
  • Hierarchical porous carbon cloth material, preparation method thereof and application of hierarchical porous carbon cloth material as supercapacitor electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Preparation and Application of Example 1 Hierarchical Porous Carbon Cloth Material (1) The preparation method is as follows:

[0027] 1) Dissolve 5mmol of hexamethylenetetramine, 5mmol of zinc nitrate, and 2mL of ammonia water in 35mL of deionized water, and stir well to form a milky white suspension. After the above solution and size 3 x 3 cm 2 The carbon cloth (washed with ethanol and deionized water several times before use) was transferred to the reactor for hydrothermal reaction so that the surface of the carbon cloth was covered with a layer of ZnO nanorods. The reaction temperature was 95°C and the reaction time was 24h. The surface of the carbon cloth was rinsed with deionized water several times and dried at 60 °C.

[0028] 2) Transfer the carbon cloth wrapped with ZnO nanorods to a tube furnace with a heating rate of 5 °C / s, N 2 Annealing treatment under protection, firstly calcined at 600°C for 2h, then raised to 950°C for 2h, and then washed the annealed c...

Embodiment 2

[0033] Preparation and Application of Embodiment 2 Hierarchical Porous Carbon Cloth Material

[0034] (1) The preparation method is as follows:

[0035] 1) Dissolve 5mmol of hexamethylenetetramine, 5mmol of zinc nitrate, and 2mL of ammonia water in 35mL of deionized water, and stir well to form a milky white suspension. After the above solution and size 3 x 3 cm 2 The carbon cloth (washed with ethanol and deionized water several times before use) was transferred to the reactor for hydrothermal reaction so that the surface of the carbon cloth was covered with a layer of ZnO nanorods. The reaction temperature was 95 °C and the reaction time was 12 hours. The surface of the carbon cloth was rinsed with deionized water several times and dried at 60 °C.

[0036] 2) Transfer the carbon cloth wrapped with ZnO nanorods to a tube furnace with a heating rate of 5 °C / s, N 2 Annealing treatment under protection, firstly calcined at 600°C for 2h, then raised to 950°C for 2h, and then wa...

Embodiment 3

[0039] Preparation and Application of Example 3 Hierarchical Porous Carbon Cloth Material

[0040] (1) The preparation method is as follows:

[0041] 1) Dissolve 5mmol of hexamethylenetetramine, 5mmol of zinc nitrate, and 2mL of ammonia water in 35mL of deionized water, and stir well to form a milky white suspension. After the above solution and size 3 x 3 cm 2 The carbon cloth (washed with ethanol and deionized water several times before use) was transferred to the reactor for hydrothermal reaction so that the surface of the carbon cloth was covered with a layer of ZnO nanorods. The reaction temperature was 95°C and the reaction time was 24h. The surface of the carbon cloth was rinsed with deionized water several times and dried at 60 °C.

[0042] 2) Transfer the carbon cloth wrapped with ZnO nanorods to a tube furnace with a heating rate of 5 °C / s, N 2 Annealing treatment under protection, first calcined at 600 °C for 1 h, then raised to 950 °C for 2 h, and then washed th...

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Abstract

The invention relates to the technical field of novel electrode materials, and particularly provides a preparation method of a hierarchical porous carbon cloth material and application of the hierarchical porous carbon cloth material as a supercapacitor electrode. The preparation method of the hierarchical porous carbon cloth material comprises the steps of immersing cleaned carbon cloth into a mixed solution of hexamethylenetetramine, zinc nitrate hexahydrate and ammonia water, stirring, then transferring into a reaction kettle for hydrothermal reaction, growing ZnO nanosheets on the surfaceof the carbon cloth, and cleaning and drying the carbon cloth on which the ZnO nanosheets grow; calcining the carbon cloth coated with ZnO nanorods on the surface in a nitrogen atmosphere, cooling toroom temperature, and cleaning with a 3M HCl solution to obtain the hierarchical porous carbon cloth. The surface of the hierarchical porous carbon cloth prepared by the method has a large number of interconnected pore structures, and when the hierarchical porous carbon cloth is used as a supercapacitor electrode, the contact area of the electrode and an electrolyte can be effectively increased, and the ion diffusion rate of the electrode during working is improved, so that the electrochemical performance of an electrode material is improved.

Description

technical field [0001] The invention relates to the technical field of novel electrode materials and can be applied to the field of supercapacitor electrodes, in particular to a hierarchical porous carbon cloth material, a preparation method thereof, and an application as a supercapacitor electrode. Background technique [0002] With the increasing consumption of fossil energy and serious environmental pollution, the development and utilization of clean energy has become the focus of research in the field of energy. However, clean energy such as solar energy and wind energy are often intermittent and uncertain, and strongly depend on the natural environment. Therefore, it is particularly urgent to develop energy storage and conversion devices that match them. Among many energy storage devices, supercapacitors have attracted a lot of attention due to their high power density, fast charging and discharging characteristics and good cycle life, and have been developed rapidly. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/26H01G11/32H01G11/46H01G11/86B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/24H01G11/26H01G11/32H01G11/46H01G11/86Y02E60/13
Inventor 马天翼黄子航韩旭
Owner LIAONING UNIVERSITY
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