Application of triazine-carbazole polymer in organic electrode material

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

Active Publication Date: 2021-01-01
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 triazine-carbazole polymer in organic electrode material
  • Application of triazine-carbazole polymer in organic electrode material
  • Application of triazine-carbazole polymer in organic electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0031] A triazine-carbazole polymer is used as an active material, and a conductive agent and a binder are used to form a working electrode, and then a CR2032 button battery is formed with a counter electrode, a separator, and an electrolyte. The counter electrode is metal potassium, the separator is glass fiber (Whatman, Grade GF / D), and the electrolyte is KPF 6 Solution (KPF 6 The concentration is 0.8mol / L, and the solvent is a mixed solution of EC and DEC with a volume ratio of 1:1).

[0032] The working electrode is specifically prepared by the following method: mix triazine-carbazole polymer, conductive carbon black / multi-walled carbon nanotubes / single-walled carbon nanotubes, and polyvinylpyrrolidone in a mass ratio of 7:2:1, and the conductive The mass ratio of carbon black, multi-walled carbon nanotubes and single-walled...

Embodiment 2

[0038] The trimer-carbazole polymer of the present embodiment is also used as the negative electrode material of the potassium ion battery, which is basically the same as that of Example 1, the only difference being that the preparation process of the trimer-carbazole polymer is slightly different, and the trimer-carbazole polymer of the present embodiment -The concrete preparation process of carbazole polymer is:

[0039] (1) Under a nitrogen atmosphere, dissolve carbazole in tetrahydrofuran to prepare a solution containing carbazole with a molar concentration of 0.7mol / L; then, under cold bath conditions (the temperature of the cold bath is 0°C), add The n-hexane solution containing n-butyllithium (the molar concentration of n-butyllithium is 1.5mol / L), after the dropwise addition is completed (the molar ratio of carbazole and n-butyllithium is 1:1), continue to stir for 30min, and then remove Take a cold bath and return to room temperature to obtain a lithium salt solution ...

Embodiment 3

[0043] The trimer-carbazole polymer of the present embodiment is also used as the negative electrode material of the potassium ion battery, which is basically the same as that of Example 1, the only difference being that the preparation process of the trimer-carbazole polymer is slightly different, and the trimer-carbazole polymer of the present embodiment -The concrete preparation process of carbazole polymer is:

[0044] (1) Under a nitrogen atmosphere, dissolve carbazole in tetrahydrofuran to prepare a carbazole-containing solution with a molar concentration of 1mol / L; then add The n-hexane solution containing n-butyllithium (the molar concentration of n-butyllithium is 2.0mol / L), after the dropwise addition is completed (the molar ratio of carbazole and n-butyllithium is 1:1), continue to stir for 30min, and then remove Take a cold bath and return to room temperature to obtain a lithium salt solution of carbazole;

[0045] (2) Add the lithium salt solution of carbazole dr...

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Abstract

The invention belongs to the technical field of energy storage materials, and particularly relates to application of a triazine carbazole polymer in an organic electrode material. The triazine carbazole polymer disclosed by the invention is formed by polymerizing 2, 4, 6-tri (9Hc-arbazole-9-yl)-1, 3, 5-triazine monomers under the action of Lewis acid. Since the triazine carbazole polymer is a macromolecular conjugated polymer and the polymer is of a porous structure with large pores, the triazine carbazole polymer can be used as an organic electrode material. And the triazine carbazole polymerhas larger pores, so the intercalation and deintercalation of potassium ions are facilitated, and the triazine carbazole polymer is suitable for being used as a potassium ion negative electrode material.

Description

technical field [0001] 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. Background technique [0002] Lithium-ion batteries have high specific energy, specific power, and fast response speed, and are widely used in electric vehicles and electronic equipment. However, due to the limited and uneven distribution of lithium metal in the earth's crust, the application of lithium-ion batteries in large-scale electrical energy storage systems is limited. Potassium and lithium have similar chemical properties, and potassium resources are abundant and low in cost. Therefore, compared with lithium-ion batteries, potassium-ion batteries have more application potential. Due to the large ionic radius of potassium ions, it is difficult to intercalate / deintercalate in traditional inorganic lattices. Therefore, the selection of suitable electrode materials ...

Claims

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Application Information

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Patent Type & Authority Applications(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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