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Preparation method and use of a carbon-based composite material

A carbon-based composite material and cotton cloth technology, which is applied in the manufacture of hybrid/electric double layer capacitors and hybrid capacitor electrodes, can solve the problems of high cost, unsuitable for large-scale use, and poor carbon cloth effect, and achieve low cost and convenience Methods of preparation, effects of ease of diffusion and transport

Active Publication Date: 2020-02-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nickel foam works well but is not suitable for large-scale use due to its high cost, while carbon cloth is cheap but less effective

Method used

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  • Preparation method and use of a carbon-based composite material
  • Preparation method and use of a carbon-based composite material
  • Preparation method and use of a carbon-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1) Preparation of HKUST-1 metal organic framework thin film

[0063] Weigh copper acetate and trimesic acid, dissolve them in pure ethanol solution, and prepare 500ml of solutions with concentrations of 1mmol / L and 0.4mmol / L respectively.

[0064] The prepared solutions are respectively connected to the circulation pump device to provide the reaction raw materials, and each pump correspondingly draws a solution. Then, the cotton cloth modified with hydroxyl groups was used as the growth substrate, and the cotton cloth was fixed in the reaction pool. Finally, set the time for extracting the solution, soaking time and reaction time, and start the cycle after the setting is completed.

[0065] Wherein, the immersion amount of copper acetate solution is advisable to have not crossed cotton cloth, and immersion time is 15 minutes, and standing reaction time is 3 minutes after immersion, and soaks 1 minute with pure ethanol after reaction to remove residual reaction raw mate...

Embodiment 2

[0073] 1) Preparation of ZIF-8 metal-organic framework films

[0074] Weigh zinc acetate and dimethylimidazole, dissolve them in pure ethanol solution, and prepare 500ml of solutions with concentrations of 1mmol / L and 0.4mmol / L respectively.

[0075] The prepared solutions are respectively connected to the circulation pump device to provide the reaction raw materials, and each pump correspondingly draws a solution. Then, the cotton cloth modified with hydroxyl groups was used as the growth substrate, and the cotton cloth was fixed in the reaction pool. Finally, set the time for extracting the solution, soaking time and reaction time, and start the cycle after the setting is completed.

[0076] Wherein, the immersion amount of zinc acetate solution is advisable to have not crossed cotton cloth, immersion time is 15 minutes, after immersion standstill reaction time is 3 minutes, after reaction, soak 1 minute with pure ethanol to remove residual reaction raw material. Afterward...

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Abstract

The invention discloses a preparation method for a composite hollow material. The preparation method comprises the following steps: growing a metal organic framework thin film by use of a liquid phaseepitaxial growth method, and then performing calcination. The method has the advantages of high synthesis speed, high preparation efficiency, controllable thin film thickness, environmental friendliness, low cost, simplicity for operation and the like, and a convenient method is provided for large-scale preparation. An obtained carbon-based composite material is of a hollow structure and relatively high in electrical conductivity, and has broad application prospect for super capacitors and other electrochemical fields, and electrons can be diffused and transported conveniently.

Description

technical field [0001] The invention belongs to the technical field of preparation of supercapacitor materials, and relates to a preparation method and application of a carbon-based composite material with a hollow structure after being heat-treated by modifying a metal-organic framework (MOFs) film on the surface of cotton cloth. Background technique [0002] With the rapid development of the global economy, the sharp reduction of fossil fuels and the increasing environmental pollution, it is very important to seek a high utilization rate, clean and sustainable energy or technology. In recent years, due to the advantages of high energy density and long cycle life, supercapacitors have been attracting the attention of scientists. [0003] The properties of supercapacitors are not only related to the type of active material, but also related to the type of current collector. Currently commonly used current collectors mainly include nickel foam and carbon cloth. Nickel foam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/32H01G11/86
CPCH01G11/24H01G11/32H01G11/86Y02E60/13
Inventor 李德晶谷志刚康遥张健
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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