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Covalence organic frame/graphene composite materials, preparing method and application

A technology of covalent organic framework and composite material, which is applied in the field of supercapacitor electrode materials, can solve the problem that the performance needs to be further developed, and achieve the effect of good cycle stability and high capacitance performance.

Inactive Publication Date: 2015-01-28
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, covalent organic framework materials have just emerged, and most of their research focuses on the synthesis of new materials, and their functional research focuses on gas adsorption and photoelectric conversion. Other aspects of performance need to be further developed.

Method used

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  • Covalence organic frame/graphene composite materials, preparing method and application
  • Covalence organic frame/graphene composite materials, preparing method and application
  • Covalence organic frame/graphene composite materials, preparing method and application

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specific Embodiment approach

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be further described with examples below, and these examples only illustrate the method of the present invention, without any limitation on the scope of application of the present invention.

[0028] The present invention is raw material with flake graphite, has synthesized graphite oxide by the improved Hummers method, and further reacts with ammoniacal liquor to prepare aminated graphene (as figure 1 ), aminated graphene reacts with trimesaldehyde and p-phenylenediamine under the catalysis of acetic acid to synthesize a covalent organic framework / graphene composite (such as figure 2 ), and mix it with the conductive agent Ketjen black and the binder PTFE solution and coat it on the nickel foam, press it and dry it and use it as the electrode material of the supercapacitor.

[0029] The synthesis steps of the covalent organic framework / graphene composite material involved in the present inven...

Embodiment 1

[0034] Example 1: Synthesis of covalent organic framework / graphene composite COFs / G-0.5.

[0035] Such as figure 2 Add 24mg of aminated graphene, 6ml of 1,4-dioxane and 1,3,5-trimethylbenzene 1:1 mixed solution, 48mg of trimesaldehyde and 48mg of p-phenylenediamine in the reactor, magnetic Stir for 40min. Add 0.6 ml of 3 mol / L acetic acid to the mixture, stir it magnetically for 20 min, place it in a high-pressure reactor, and react at 120° C. for 48 h. After the reaction was completed, it was centrifuged and washed three times with N,N-dimethylformamide (10 ml each time), and then washed three times with tetrahydrofuran (10 ml each time). After washing, place it in a vacuum oven at 80°C and dry it in vacuum for 12 hours. After drying and grinding, the covalent organic framework / graphene composite material COFs / G-0.5 was obtained.

Embodiment 2

[0036] Example 2: Synthesis of covalent organic framework / graphene composite COFs / G-1.

[0037] Such as figure 2 Add 48mg of aminated graphene, 6ml of 1,4-dioxane and 1,3,5-trimethylbenzene 1:1 mixed solution, 48mg of trimesaldehyde and 48mg of p-phenylenediamine in the reactor, magnetic Stir for 40min. Add 0.6 ml of 3 mol / L acetic acid to the mixture, stir it magnetically for 20 min, place it in a high-pressure reactor, and react at 120° C. for 48 h. After the reaction was completed, it was centrifuged and washed three times with N,N-dimethylformamide (10 ml each time), and then washed three times with tetrahydrofuran (10 ml each time). After washing, place it in a vacuum oven at 80°C and dry it in vacuum for 12 hours. After drying and grinding, the covalent organic framework / graphene composite material COFs / G-1 was obtained.

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Abstract

The invention relates to covalence organic frame / graphene composite materials and a preparing method. According to the materials, amination graphene is used as a base body, 1,3,5-benzenetricarboxaldehyde, p-phenylenediamine and catalyst acetic acid are added into graphene turbid liquid according to a certain ratio for stirring, the liquid is placed in a reactor to be heated for certain time, and the covalence organic frame / graphene composite materials can be obtained. The technology is simple, the prepared composite materials have the advantages of being high in specific capacitance and stable in performance, and the materials can be used as electrode materials of a novel energy storing system used by an electric car.

Description

technical field [0001] The invention relates to a supercapacitor electrode material, in particular to a covalent organic framework / graphene composite material, a preparation method thereof and an application in a supercapacitor electrode material. Background technique [0002] With the development of social economy and human civilization awareness, energy and environmental issues have attracted more and more attention. As clean and renewable energy, solar energy and wind energy are expected to become important components to solve energy and environmental problems. But solar power and wind power must be equipped with backup power, otherwise the power supply will be interrupted at night and when there is no wind. As a new type of energy storage device, supercapacitors are increasingly valued. Compared with various energy storage devices widely used at present, the charge storage capacity of supercapacitors is much higher than that of ordinary capacitors, and the specific powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/38H01G11/86
CPCY02E60/13H01G11/30H01G11/36H01G11/38H01G11/86
Inventor 王培远孙淑敏方少明靳清贤黄改玲吴琼
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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