Porous carbon material based on porous organic polymer structure and preparation method and application thereof

A technology for porous carbon materials and polymers, applied in the field of porous carbon materials, can solve the problems of poor conductivity of porous organic polymers and limit practical applications, and achieve the effects of high specific capacitance, good application prospects, and excellent cycle stability.

Active Publication Date: 2019-06-28
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor electrical conductivity of porous organic polymers limits their practical applications in supercapacitors

Method used

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  • Porous carbon material based on porous organic polymer structure and preparation method and application thereof
  • Porous carbon material based on porous organic polymer structure and preparation method and application thereof
  • Porous carbon material based on porous organic polymer structure and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 A porous carbon material C-LNU-16 based on a porous organic polymer structure

[0034] 1. Synthesis of Precursor LNU-16

[0035] Under nitrogen, 531 mg (0.827 mmoL) of 9,9-dioctylfluorene-2,7-diboronic acid pinacol ester was mixed with 303 mg (0.555 mmoL) of 2,4,6-tri-(4-bromo Phenyl)-[1,3,5]triazine was added into a round-bottomed flask containing 60mL of DMF solution, then frozen with liquid nitrogen, pumped with an oil pump and then thawed repeatedly for three times, and then 5mL of 2mol / L potassium carbonate aqueous solution and 40 mg tetrakis(triphenylphosphine)palladium were added to the reaction system. After repeating the above degassing process three times, the reaction system was heated to 130° C. and reacted for 2 days.

[0036] 2. Post-processing of precursor LNU-16

[0037] After the reaction was completed, the reactant was suction filtered to leave solid insoluble matter, which was washed with tetrahydrofuran, water and acetone solvents for m...

Embodiment 2

[0042] Example 2 A porous carbon material C-LNU-17 based on a porous organic polymer structure

[0043]In Example 1, 531mg (0.827mmoL) of 9,9-dioctylfluorene-2,7-diboronic acid pinacol ester was replaced by 371mg (0.831mmoL) of 9,9-dimethyl-2,7- For bis(borpinacol ester)fluorene, other steps were repeated in Example 1, and the obtained light green powder was the precursor porous organic polymer LNU-17 of the present invention.

[0044] The reaction equation of the precursor porous organic polymer LNU-17 is as follows:

[0045]

[0046] The sample obtained after carbonizing the precursor is the porous carbon material C-LNU-17 described in the present invention.

Embodiment 3

[0047] Example 3 A porous carbon material C-LNU-18 based on a porous organic polymer structure

[0048] In Example 1, 531mg (0.827mmoL) of 9,9-dioctylfluorene-2,7-diboronic acid pinacol ester was replaced with 346mg (0.555mmoL) of tris (4-boric acid pinesol ester phenyl)amine , other steps were repeated in Example 1, and the obtained bright green powder was the precursor porous organic polymer LNU-18 described in the present invention.

[0049] The reaction equation of the precursor porous organic polymer LNU-18 is as follows:

[0050]

[0051] The sample obtained after carbonizing the precursor is the porous carbon material C-LNU-18 described in the present invention.

[0052] Such as Figure 1-1 to Figure 1-3 As shown, the precursor porous organic polymer LNU-16 (a), LNU-17 (b), LNU-18 (c) and the infrared spectrograms of the corresponding monomers prepared by the embodiment of the present invention 1-3, each The curve a in the figure is the infrared spectrum of the po...

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Abstract

The invention belongs to the technical field of new energy materials, and particularly relates to a porous carbon material based on a porous organic polymer structure, which can be used for a supercapacitor electrode. The preparation method comprises the following steps: dissolving a boric acid organic monomer and 2,4,6-tris(4-bromophenyl)-1,3,5-triazine in DMF; freezing the mixture with liquid nitrogen, pumping air through an oil pump, unfreezing the mixture, and repeating the process for three times; rapidly adding a catalyst into a reaction system, freezing the catalyst by using liquid nitrogen, pumping air by an oil pump, performing unfreezing, repeatedly performing the step for three times, performing heating, carrying out a reflux reaction under a nitrogen condition for 2 days, performing cooling to room temperature after the reaction is finished, and repeatedly washing solids generated by the reaction by using an organic solvent for multiple times; carrying out vacuum drying toobtain the porous organic polymer LNUs; placing the polymer in a quartz boat, then horizontally placing the quartz boat in a tubular furnace, and performing heating under the protection of nitrogen toobtain a target product. The material has a good application prospect in an electrode material of a super capacitor.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a porous carbon material based on a porous organic polymer structure that can be used for supercapacitor electrodes. Background technique [0002] The development of portable electronic devices, hybrid vehicles, energy storage, and fuel cells are major energy issues in the progress of the times. Replacing non-renewable fossil fuels with renewable energy is a huge challenge for us. Due to the increase in energy consumption, energy storage technology research has become a hot topic of public discussion. Supercapacitors, also known as electrochemical capacitors, have attracted increasing attention due to their excellent properties such as high power density, high discharge-charge rate, and high cycle life stability. According to the energy storage mechanism, supercapacitors are generally divided into two categories: electrochemical double-layer capacitors ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/48
CPCY02E60/13
Inventor 闫卓君赵云波夏立新布乃顺张谦刘枫
Owner LIAONING UNIVERSITY
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