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Carbon fiber cloth surface modification method for flexible supercapacitor electrode

A technology of supercapacitor and surface modification, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors. It can solve the problems of poor cycle stability, low capacitance performance and limited electrode material performance

Inactive Publication Date: 2018-05-08
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the needle-like or flake-like morphology of the active material, the existence of agglomeration and other problems, the cycle stability is deteriorated, and the substrate materials with inert or low capacitance properties such as porous metal substrates, carbon tubes, graphene, and linen are selected. Or commercial carbon cloth with small specific surface area greatly limits the performance of electrode materials

Method used

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  • Carbon fiber cloth surface modification method for flexible supercapacitor electrode
  • Carbon fiber cloth surface modification method for flexible supercapacitor electrode
  • Carbon fiber cloth surface modification method for flexible supercapacitor electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The invention provides a carbon cloth surface modification method for flexible supercapacitor electrodes, refer to the attached figure 1 Route I in includes the following steps:

[0049] S1: First arrange carbon in a mixed solution formed by 0.4g zinc nitrate hexahydrate, 0.2g hexamethylenetetramine and 70mL deionized water, control the temperature at 90°C for 12h, and prepare carbon containing ZnO nanoarrays cloth, and then repeatedly washed three times with deionized water and ethanol, and dried at a controlled temperature of 60 ° C for 10 h;

[0050] S2: Arrange the carbon containing ZnO nanoarray prepared in S1 in a mixed solution formed by 0.2g 2-methylimidazole, 12mL dimethylformamide and 4mL deionized water, and control the temperature at 70°C for 10h to prepare The carbon cloth containing ZnO@ZIF-8 nanoarrays was obtained, and then repeatedly washed with deionized water and ethanol three times, dried at a controlled temperature of 70 °C for 12 h, and then heate...

Embodiment 2

[0054] The invention provides a carbon cloth surface modification method for flexible supercapacitor electrodes, refer to the attached figure 1 Route II in includes the following steps:

[0055] S1: First arrange carbon in a mixed solution formed by 0.4g zinc nitrate hexahydrate, 0.2g hexamethylenetetramine and 70mL deionized water, control the temperature at 90°C for 12h, and prepare carbon containing ZnO nanoarrays cloth, and then repeatedly washed three times with deionized water and ethanol, and dried at a controlled temperature of 60 ° C for 10 h;

[0056] S2: Arrange the carbon containing ZnO nanoarray prepared in S1 in a mixed solution formed by 0.2g 2-methylimidazole, 12mL dimethylformamide and 4mL deionized water, and control the temperature at 70°C for 10h to prepare The carbon cloth containing ZnO@ZIF-8 nanoarrays was obtained, and then repeatedly washed with deionized water and ethanol three times, dried at a controlled temperature of 70 °C for 12 h, and then heat...

Embodiment 3

[0062] The invention provides a carbon cloth surface modification method for flexible supercapacitor electrodes, refer to the attached figure 1 Route III in includes the following steps:

[0063] S1: First arrange carbon in a mixed solution formed by 0.4g zinc nitrate hexahydrate, 0.2g hexamethylenetetramine and 70mL deionized water, control the temperature at 90°C for 12h, and prepare carbon containing ZnO nanoarrays cloth, and then repeatedly washed three times with deionized water and ethanol, and dried at a controlled temperature of 60 ° C for 10 h;

[0064] S2: Arrange the carbon containing ZnO nanoarray prepared in S1 in a mixed solution formed by 0.2g 2-methylimidazole, 12mL dimethylformamide and 4mL deionized water, and control the temperature at 70°C for 10h to prepare The carbon cloth containing ZnO@ZIF-8 nanoarrays was obtained, and then repeatedly washed with deionized water and ethanol three times, dried at a controlled temperature of 70 °C for 12 h, and then hea...

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Abstract

The invention relates to a carbon fiber cloth surface modification method for a flexible supercapacitor electrode. The carbon fiber cloth surface modification method for a flexible supercapacitor electrode includes the following steps: S1, putting a piece of carbon fiber cloth in nutrient solution containing Zn2+ to react, obtaining a piece of carbon fiber cloth containing a ZnO nano array throughpreparation, and washing and drying the piece of carbon fiber cloth; S2, putting the piece of carbon fiber cloth containing the ZnO nano array, obtained in S1, in the nutrient solution containing 2-methylimidazole to react, and then obtaining a piece of carbon fiber cloth containing a ZnO@ZIF-8 nano array, washing, drying and calcining the piece of carbon fiber cloth, and then obtaining a piece of carbon fiber cloth that the surface of the carbon fiber cloth is loaded with a ZnO@ZnO / C nano array; and S3, finally putting the piece of carbon fiber cloth that the surface of the carbon fiber cloth is loaded with the ZnO@ZnO / C nano array, obtained in S2, into salting liquid containing the iron series element M to react, obtaining a piece of carbon fiber cloth loaded with an M(OH)XNPs / C NPs nano array through preparation, washing, drying and calcining the piece of carbon fiber cloth loaded with the M(OH)XNPs / C NPs nano array, and then obtaining a piece of carbon fiber cloth loaded with an iron series metal oxide MOXI NPs / C NPs or MOX2 NPs / C NPs nano array. The surface modified carbon fiber cloth prepared by the carbon fiber cloth surface modification method for a flexible supercapacitorelectrode has relatively higher faradaic pseudo-capacitance performance, and obviously solves the defect that the current faradaic pseudo-capacitance material is worse in the circulation stability.

Description

technical field [0001] The invention relates to the field of electrode material preparation, in particular to a method for modifying the surface of a carbon cloth used for a flexible supercapacitor electrode. Background technique [0002] With the increasing shortage of petroleum resources and the pollution of the environment by the exhaust emissions of internal combustion engines burning petroleum (especially in large and medium-sized cities), people are studying various energy storage and conversion devices. Lithium-ion batteries, traditional capacitors and supercapacitors are rapidly developing as new energy storage devices, among which supercapacitors have been widely studied due to their higher power density and cycle stability than lithium-ion batteries, and greater energy density than traditional capacitors . However, its energy density is limited because its energy storage mechanism is based on the rapid adsorption and desorption of ions. [0003] Supercapacitors, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/26H01G11/86
CPCY02E60/13H01G11/30H01G11/26H01G11/32H01G11/86
Inventor 陈德志周帅权红英
Owner NANCHANG HANGKONG UNIVERSITY
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