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Application of a triazine-carbazole polymer in organic electrode materials

An organic electrode and polymer technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as reducing the cycle stability of potassium ion batteries and limiting the application of organic electrode materials.

Active Publication Date: 2022-02-22
DO FLUORIDE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most commonly used organic electrode materials are easily dissolved in organic electrolytes, which reduces the cycle stability of potassium-ion batteries, thus limiting the application of organic electrode materials in potassium-ion batteries.

Method used

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  • Application of a triazine-carbazole polymer in organic electrode materials
  • Application of a triazine-carbazole polymer in organic electrode materials
  • Application of a triazine-carbazole polymer in organic electrode materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This example is the application of triazine-carbazole polymers as a negative electrode material of potassium ion battery, specifically:

[0031] The triazine-carbazole polymer is used as the active material, and the working electrode is formed with the conductive agent and the adhesive, and then the CR2032-type button battery is composed of the counter electrode, the diaphragm, and the electrolyte. Where the electrode is metallic, the diaphragm is glass fiber (Whatman, GRADE GF / D), and the electrolyte is KPF. 6 Solution (KPF 6 The concentration of 0.8 mol / L, the solvent is a mixed solution of EC and DEC having a volume ratio of 1: 1.

[0032] The working electrode is prepared by the following method: a triazine-carbazole polymer, a conductive carbon black / multi-wall carbon nanotube / single-walled carbon nanotube, and polyvinylpyrrolidone are mixed in accordance with the mass ratio of 7: 2: 1, wherein the conductive Carbon black, multi-wall carbon nanotubes and single...

Embodiment 2

[0038] The tri-carbazole polymer of the present embodiment also acts as a negative electrode material of a potassium ion battery, which is substantially identical to Example 1, which is only slightly different from the preparation process of the tri-carbazole polymer, and the three polymers of the present embodiment. - The specific preparation process of the carbazole polymer is:

[0039] (1) In a nitrogen atmosphere, the carbazole is dissolved in tetrahydrofuran to form a carbazole-containing solution of molar concentration of 0.7 mol / L; then under the cold bath condition (cold bath temperature is 0 ° C), add drop The n-buthac-containing n-hexane solution (n-butyl lithium has a molar concentration of 1.5 mol / L), after the dropwise addition (the molar ratio of carbazole and n-butyllithium is 1: 1), continued to stir 30 min, then remove Cold bath, returned to room temperature, lithium salt solution of carbazole;

[0040] (2) At room temperature and nitrogen atmosphere, the carb...

Embodiment 3

[0043] The tri-carbazole polymer of the present embodiment also acts as a negative electrode material of a potassium ion battery, which is substantially identical to Example 1, which is only slightly different from the preparation process of the tri-carbazole polymer, and the three polymers of the present embodiment. - The specific preparation process of the carbazole polymer is:

[0044] (1) In a nitrogen atmosphere, the carbazole is dissolved in tetrahydrofuran to form a carbazole-containing solution having a molar concentration of 1 mol / L; then in the cold bath condition (the cold bath temperature is -15 ° C), dripping The n-butylhydric alkane solution (n-butyl lithium has a molar concentration of 2.0 mol / L). After the dropwise addition (the molar ratio of carbazole and n-butyllithium is 1: 1), it is continued for 30min, then removed Cold bath, returned to room temperature, lithium salt solution of carbazole;

[0045] (2) At room temperature and nitrogen atmosphere, the car...

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Abstract

The invention belongs to the technical field of energy storage materials, and in particular relates to the application of a triazine-carbazole polymer in organic electrode materials. The triazine-carbazole polymer of the present invention is formed by polymerizing 2,4,6-tris(9H-carbazole-9-yl)-1,3,5-triazine monomer under the action of Lewis acid. Since the triazine-carbazole polymer is a macromolecular conjugated polymer, and the polymer has a porous structure with relatively large holes, the triazine-carbazole polymer can be used as an organic electrode material. And because the pores of the triazine-carbazole polymer are large, it is beneficial for the intercalation and extraction of potassium ions, so it is suitable as a negative electrode material for potassium ions.

Description

Technical field [0001] The present invention belongs to the technical field of energy storage materials, and more particularly to the application of a triazine-carbazole polymer in an organic electrode material. Background technique [0002] Lithium ion batteries have high specific energy and specific power, faster response speeds, are widely used in electric vehicles and electronic equipment. However, since the amount of reserves in the crust is limited and the distribution is uneven, the application of the lithium ion battery in large power storage systems is limited. Potassium has similar chemical properties, and potassium resource reserves, low cost, and therefore compared to lithium ion batteries, potassium ion batteries have more potential. Due to the large radius of the potassium ions, it is more difficult to embed / out of the conventional inorganic lattice. Therefore, selecting a suitable electrode material is one of the key issues in potassium ion battery research. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/60H01M10/054C08G61/12
CPCH01M4/608H01M10/054C08G61/124C08G61/122C08G2261/124C08G2261/3221C08G2261/3241C08G2261/344C08G2261/354Y02E60/10
Inventor 李云峰薛旭金郭贤慧许胜霞张小霞王矿宾王永勤王建萍云国利云小桂
Owner DO FLUORIDE CHEM CO LTD
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