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Carbazolyl porous carbon/polyaniline composite electrode material and preparation method thereof

A composite electrode, carbazole-based technology, applied in the field of carbazole-based porous carbon/polyaniline composite electrode materials and their preparation, can solve the problem of poor cycle stability and rate performance, poor electrical conductivity, and power density not as good as electric double-layer capacitors, etc. problems, to achieve the effect of enriching active sites, enhancing surface wettability, and excellent electrochemical performance

Active Publication Date: 2021-07-27
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pseudocapacitors have higher theoretical capacitance and energy density than electric double layer capacitors, but due to the poor conductivity of pseudocapacitive materials themselves, their cycle stability and rate performance are poor, and their power density is not as good as that of electric double layer capacitors.

Method used

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  • Carbazolyl porous carbon/polyaniline composite electrode material and preparation method thereof
  • Carbazolyl porous carbon/polyaniline composite electrode material and preparation method thereof
  • Carbazolyl porous carbon/polyaniline composite electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) 30 mmol of carbazole monomer was dissolved in 120 mL of 1,2-dichloroethane, then 60 mmol of dimethoxyethane was added to stir well, and then 45 mmol of anhydrous trichloride, while stirring The temperature was raised to 80 ° C, and the product was filtered at 80 ° C for 24 hours, and the product was filtered through methanol and filtered until the filtrate was close to colorless, and the carbazole-based superblyflial polymer was obtained by vacuum at 80 ° C.

[0023] (2) Take 1 g of the product obtained by step (1) and 4 g of potassium hydroxide in 300 ml absolute ethanol, stirring to 60 ° C to the solvent to evaporate, placing the solid mixture in the tube furnace, in nitrogen Under the atmosphere, it was raised to 700 ° C at a temperature rise rate of 5 ° C / min, and the high temperature of 700 ° C was kept in 1.5 hours, cooled to room temperature, and the pyrolysis product was washed, washed, washed, dried to obtain a carbazole-based porous carbon;

[0024] (3) Take...

Embodiment 2

[0026] (1) 30 mmol carbazole monomer was dissolved in 120 mL of 1,2-dichloroethane, then 60 mmol of dimethoxyethane was added well, and then 60 mmol of anhydrous trichloride, stirred while stirring. The temperature was raised to 80 ° C, and the product was filtered at 80 ° C for 24 hours, and the product was filtered through methanol and filtered until the filtrate was close to colorless, and the carbazole-based superblyflial polymer was obtained by vacuum at 80 ° C.

[0027] (2) The product obtained by step (1) is dispersed from 4 g of potassium hydroxide in 300 ml of anhydrous ethanol, and the stirring to 60 ° C is stirred to the solvent, and the solid mixture is placed in a tube furnace, in a nitrogen atmosphere Next, the temperature rise rate of 5 ° C / min was raised to 700 ° C, and the high temperature of 700 ° C was kept intracted for 1.5 hours, cooled to room temperature, and the pyrolysis product was washed, washed, washed, dried to obtain a carbazole-based porous carbon....

Embodiment 3

[0030] (1) 22.5 mmol of carbazole monomer was dissolved in 120 ml of 1,2-dichloroethane, then 67.5 mmol of dimethoxyethane, stir well, add 45 mmol of anhydrous carbide, stirred while stirring The temperature was warmed to 80 ° C, reacted at 80 ° C for 24 hours, and the product was filtered through methanol ultrasound and filtered to the filtrate approached colorless, and the carbazole-based superblyflial polymer was obtained after vacuum at 80 ° C.

[0031] (2) The product obtained by step (1) is dispersed from 4 g of potassium hydroxide in 300 ml of anhydrous ethanol, and the stirring to 60 ° C is stirred to the solvent, and the solid mixture is placed in a tube furnace, in a nitrogen atmosphere Next, the temperature rise rate of 5 ° C / min was raised to 700 ° C, and the high temperature of 700 ° C was kept intracted for 1.5 hours, cooled to room temperature, and the pyrolysis product was washed, washed, washed, dried to obtain a carbazole-based porous carbon.

[0032] (3) Take ...

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Abstract

The invention belongs to the field of electronic materials, and particularly relates to a carbazolyl porous carbon / polyaniline composite electrode material and a preparation method thereof. The preparation method comprises the following steps of preparing super-crosslinked polycarbazole by taking carbazole as a monomer and dimethoxymethane as external crosslinking, mixing the super-crosslinked polycarbazole as a precursor of porous carbon with potassium hydroxide, performing high-temperature pyrolysis in a nitrogen atmosphere to obtain nitrogen-containing hierarchical porous carbon, and finally loading polyaniline by a chemical oxidation polymerization method, thereby preparing to obtain the carbazolyl porous carbon / polyaniline composite electrode material. According to the present invention, the specific surface area of the prepared nitrogen-doped porous carbon reaches 1576 m<2>.g<-1> by using a nitrogen-containing functional group of carbazole and a pore structure of the super-crosslinked polymer, the specific capacitance of the composite electrode material obtained after loading polyaniline reaches 462 F.g<-1>, and the composite electrode material can be used for preparing a supercapacitor.

Description

Technical field [0001] The present invention belongs to the field of electronic materials, and more particularly to a carbazole-based porous carbon / polyaniline composite electrode material and a preparation method thereof. Background technique [0002] The supercapacitor is an emerging green energy storage device, which is generally composed of electrodes, collective fluids, electrolytes, and diaphragm, wherein the electrode material is a key factor affecting the performance of supercapacitor. It directly determines the specific capacitance, cycle stability of the supercapacitor, Performance parameters such as energy density and power density, and the cost of the electrode material and whether it can be large-scale production determine whether the supercapacitor can go to the market. [0003] Depending on the electrical energy storage mechanism, the supercapacitor can be divided into two main types of two-layer capacitors and vessels. Double-electric layer capacitive material i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/32H01G11/24H01G11/48H01G11/30H01G11/86
CPCH01G11/32H01G11/24H01G11/48H01G11/30H01G11/86Y02E60/13
Inventor 李晓李彩虹张卫英孙雪陈秋月
Owner FUZHOU UNIV
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