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Covalent organic framework with triphenyl antimony as skeleton and preparation method and application thereof

A covalent organic framework, triphenyl antimony technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of poor performance of supercapacitors, ineffective use of pore surface, and destruction of material crystallinity, and achieve fast and effective absorption and absorption. Release charge, effective and fast charge and discharge characteristics, good crystallinity effect

Active Publication Date: 2022-05-13
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2020, the COF material (Phos-COF) with triphenylphosphine as the skeleton was disclosed, and its potential as a supercapacitor electrode material was further explored. Poor supercapacitor performance
However, the introduction of conductive components also brings about 1) the blockage of the pore structure, so that the surface of the pores cannot be used effectively; 2) the crystallinity of the COF material will be destroyed, thereby destroying the original high-efficiency ion transport channels.

Method used

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  • Covalent organic framework with triphenyl antimony as skeleton and preparation method and application thereof
  • Covalent organic framework with triphenyl antimony as skeleton and preparation method and application thereof
  • Covalent organic framework with triphenyl antimony as skeleton and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: A covalent organic framework with triphenylantimony as the skeleton, its structural formula is as follows figure 1 shown. It is synthesized by tris(4-formylphenyl)antimony monomer and p-phenylenediamine in the corresponding solvent system through the solution heat process, and the specific steps are as follows:

[0036] S1: Dissolve 40mg, 0.092mmol of tris(4-formylphenyl)antimony and 14.8mg, 0.137mmol of p-phenylenediamine in a glass tube containing a mixed solvent, ultrasonically disperse, and then add 0.18ml of 6M acetic acid to the system , continue ultrasonic dispersion to form suspension A;

[0037] The mixed solvent is 0.28ml, which is formed by mixing mesitylene and 1,4-dioxane at a volume ratio of 3:1.

[0038] S2: The suspension A was frozen in liquid nitrogen, vacuumized, and thawed in sequence, and finally vacuumized and sealed and left to stand at 120°C for more than 72 hours to obtain a crude product;

[0039] S3: The crude product was filtere...

Embodiment 2

[0053] Example 2: This example provides a method for preparing a covalent organic framework with triphenylantimony as the skeleton. The diamine monomer used in this example is 25.2mg, 0.137mmol p-biphenylenediamine, and other technical contents are the same as Example 1, the obtained product is Sb-COF-2.

Embodiment 3

[0054] Example 3: This example provides a method for preparing a covalent organic framework with triphenylantimony as the skeleton. The diamine monomer used in this example is 35.6mg, 0.137mmol p-triphenylenediamine, other technical content Same as Example 1, the obtained product is Sb-COF-3.

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Abstract

The invention discloses a covalent organic framework taking triphenyl antimony as a framework as well as a preparation method and application thereof, and relates to the field of covalent organic frameworks (COFs) materials. The material is prepared by condensing a trialdehyde compound containing triphenyl antimony and an aromatic diamine monomer, and the preparation method comprises the following steps: 1) respectively adding tri (4-formylphenyl) antimony and aromatic diamine into an organic solvent, carrying out ultrasonic dispersion, and adding an acetic acid solution to obtain a turbid liquid; (2) carrying out liquid nitrogen freezing, vacuumizing and degassing treatment on the obtained turbid liquid, sealing, and heating for 72 hours to obtain a crude product; and 3) carrying out suction filtration and washing on the obtained crude product by using N, N-dimethylformamide (DMF), then carrying out Soxhlet extraction by using tetrahydrofuran (THF), and carrying out vacuum drying to obtain the covalent organic framework taking triphenyl antimony as the skeleton. The covalent organic framework material disclosed by the invention takes a triphenyl antimony structural unit with oxidation-reduction activity as a framework for the first time, and an electrode taking the triphenyl antimony structural unit as an active material shows excellent supercapacitor performance.

Description

technical field [0001] The invention relates to the field of covalent organic framework (COFs) materials, in particular to a novel COF material with triphenylantimony as a skeleton, a preparation method thereof and an application of a supercapacitor. Background technique [0002] Supercapacitor is a pulse current system that can release high current and very large power in less than 1 minute. The most typical application at present is to meet the supply of instantaneous energy required for starting and braking. Parameters such as specific surface area, pore structure, electrical conductivity, and physicochemical stability of electrode materials are crucial for their supercapacitor performance. COFs materials with large specific surface area, uniform pore structure and good physical and chemical stability have become new candidate materials. In 2020, the COF material (Phos-COF) with triphenylphosphine as the skeleton was disclosed, and its potential as an electrode material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00H01G11/24H01G11/30
CPCC08G83/008H01G11/24H01G11/30Y02E60/13
Inventor 邱立康坤
Owner YUNNAN UNIV
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