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A squaraine-based organic porous polymer material and its preparation method and application

A porous polymer and squarylium-based technology, applied in the field of photocatalytic materials, can solve the problems of long reaction time and low reaction efficiency, and achieve the effects of simple operation, simple synthesis process and high yield

Active Publication Date: 2022-05-27
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the synthesis methods used in traditional organic porous materials are solvothermal methods, which have the advantage of strong applicability, but they also have very obvious disadvantages, that is, the reaction time is very long, and usually a reaction requires at least 3~ 6 days, the reaction efficiency is very low

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  • A squaraine-based organic porous polymer material and its preparation method and application
  • A squaraine-based organic porous polymer material and its preparation method and application
  • A squaraine-based organic porous polymer material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0044] The preparation method of the squaraine-based organic porous polymer material applied to the positive electrode material of a lithium-sulfur battery is characterized in that the following steps are included:

[0045] (1) Preparation of squaraine-based organic porous polymer material: 1.5 g of squaraine monomer and 1.0 g of melamine monomer were dissolved in 40 mL of n-butanol under an argon atmosphere, put into a microwave reactor, and with a power of 100 W, The reaction was carried out at 120 °C for 1 hour to complete the reaction. After cooling to room temperature naturally, the reaction system was transferred to a Buchner funnel, washed with acetone, tetrahydrofuran and dichloromethane for 5 times in turn, and dried in vacuum at 35 °C for 12 hours, a solid powder is obtained, which is the prepared squaraine-based organic porous polymer material. Thermogravimetric analysis showed that the decomposition temperature of the material was 400°C, indicating that the materia...

Embodiment 2

[0053] The preparation method of the squaraine-based organic porous polymer material applied to the positive electrode material of a lithium-sulfur battery is characterized in that the following steps are included:

[0054] (1) Preparation of squaraine-based organic porous polymer material: 2.1 g of squaraine monomer and 1.3 g of 1,3,5-triaminobenzene monomer were dissolved in 40 mL of n-butanol under argon atmosphere, and put into microwave reaction In the apparatus, with a power of 120W, react at 120 ° C for 2 hours to complete the reaction, after naturally cooling to room temperature, transfer the reaction system to a Buchner funnel, and wash with acetone, tetrahydrofuran and dichloromethane repeatedly for 5 times in turn. Vacuum-drying at 40° C. for 12 hours to obtain solid powder, which is the prepared squaraine-based organic porous polymer material. The decomposition temperature of the material was found to be 450°C by thermogravimetric analysis, indicating that the mate...

Embodiment 3

[0062] Based on the electrochemical performance test of the lithium-sulfur battery using the squaraine-based organic porous polymer material as the active material of the present invention:

[0063]The three kinds of sulfur / squaric acid-based organic porous composite materials prepared in Examples 1-2 were assembled with the lithium negative electrode to form a button battery. Table 1 is the electrochemical cycle performance test of the lithium-sulfur battery based on the sulfur / squaric acid-based organic porous composite material of the present invention under the condition of an electrochemical rate of 0.1 C, respectively. During the test process, the charge and discharge Coulomb efficiency of the battery can be maintained. Above 97%, indicating that the battery device has good cycle stability. In addition, a set of CR2025 standard button batteries with the same assembly conditions using elemental sulfur powder as the positive active material (without adding squaraine-based ...

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Abstract

The invention relates to a squaraine-based organic porous polymer material and its preparation method and application. The preparation method of the squarylium-based organic porous polymer material is as follows: dissolving the squarylium monomer powder and the polyamine monomer in n-butanol under an argon atmosphere, and putting them into a microwave reactor to react for 1 to 2 hours , finish the reaction, after naturally cooling to room temperature, wash and vacuum-dry for 12 to 24 hours to obtain solid powder, which is the prepared squarylium-based organic porous polymer material; the application of the squarylium-based organic porous polymer material The method is to be used as a positive electrode active material of a lithium-sulfur battery, or to be used for photocatalytic degradation of organic pollutant materials. The preparation method of the invention is simple, cost-saving and superior in performance.

Description

Technical field: [0001] The invention relates to the technical field of photocatalytic materials and the technical field of lithium-sulfur battery energy storage, and in particular relates to a preparation method and application of a series of organic porous polymer materials with a squaraine group as the core. Background technique: [0002] The ecological environment has always been the basic condition for human survival and production and life. With the continuous development of social science and technology, on the one hand, people's demand for new energy is increasing, which continuously promotes the development of energy storage technology; on the other hand, the inevitable pollutants generated during the development and production of petrochemical products make The protection of the ecological environment is under threat. [0003] Lithium-sulfur battery is a kind of high theoretical specific capacity (1672mAh g -1 ) and specific energy (2600Wh kg -1 ) new secondary ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C08G73/00H01M4/60H01M10/052
CPCC08G73/0644C08G73/00H01M4/606H01M10/052H01M2004/028Y02E60/10
Inventor 张效洁孙淼姜晓霞刘海洋王宇
Owner HEBEI UNIV OF TECH
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