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Pi-conjugated porous carbon material based on Friedel-Crafts reaction, and preparation method and application thereof
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A porous carbon material, gram reaction technology, applied in the preparation/purification of carbon, the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc. Simple, improved electrochemical performance
Active Publication Date: 2019-11-26
LIAONING UNIVERSITY
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The poor electrical conductivity of porous organic polymers limits their practical application in supercapacitors
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Embodiment 1
[0055] Preparation of Example 1 Porous Carbon Material C-LNU-34
[0060] Under nitrogen conditions, add 300mg (0.561mmoL) of hexaphenylbenzene and 973mg (7.294mmoL) of aluminum trichloride into the round-bottomed flask, then use an oil pump to pump air and then circulate nitrogen repeatedly for three times, and then through the method of injection Add 30 mL of anhydrous and oxygen-free dichloromethane into the reaction system. Finally, the reaction system was heated to 70° C. and refluxed for 48 hours.
[0062] After the reaction was finished, the reactant was suction filtered to leave solid insoluble matter, which was washed with acetone, dichloromethane and water for several times to remove possible unreacted monomer or residual catalyst. The crude...
Embodiment 2
[0065] Preparation of Example 2 Porous Carbon Material C-LNU-35
[0070] Under nitrogen, add 300mg (0.561mmoL) of hexaphenylbenzene, 207mg (1.122mmoL) of cyanuric chloride and 973mg (7.294mmoL) of aluminum trichloride into the round-bottomed flask, then use an oil pump to pump air again Nitrogen was circulated repeatedly three times, and then 30 mL of anhydrous and oxygen-free dichloromethane was added to the reaction system by injection. Finally, the reaction system was heated to 70° C. and refluxed for 48 hours.
[0071] 2. Post-treatment of porous organic polymer LNU-35
[0072] After the reaction was finished, the reactant was suction filtered to leave solid insoluble matter, which was washed with acetone, dichloromethane and water for several times to remove possible unreacted monomer or residual catalyst...
Embodiment 3
[0075] Preparation of Example 3 Porous Carbon Material C-LNU-36
[0079] 1. Synthesis of Porous Organic Polymer LNU-36
[0080] Under nitrogen, add 300mg (0.378mmoL) of octaphenylcyclotetrasiloxane and 656mg (4.917mmoL) of aluminum trichloride into the round-bottomed flask, then use an oil pump to pump air and then circulate nitrogen repeatedly three times, and then 30 mL of anhydrous and oxygen-free dichloromethane was added to the reaction system by injection. Finally, the reaction system was heated to 70° C. and refluxed for 48 hours.
[0081] 2. Post-treatment of Porous Organic Polymer LNU-36
[0082] After the reaction was finished, the reactant was suction filtered to leave solid insoluble matter, which was washed with acetone, dichloromethane and water for several times to remove possible unreacted monomer or residual catalyst. The crude product was furthe...
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Abstract
The invention belongs to the technical field of new energy, and specifically relates to a pi-conjugated porous carbon material based on a Friedel-Crafts reaction capable of being used for a supercapacitorelectrode, and a preparation method and an application thereof. The preparation method comprises the following steps of taking a porous organic polymer as a precursor, and carbonizing at 800 to 1000 DEG C under the protection of nitrogen to obtain the porous carbon material. The preparation method of the porous organic polymer is as follows: in the presence of a catalyst, dissolving an organic compound containing a benzene ring or a mixture of the organic compound and cyanuric chloride in an organic solvent, and carrying out the reflux reaction at 60 to 80 DEG C; after the reaction is finished, cooling to room temperature, sequentially washing with acetone, dichloromethane and water at normal temperature, and then respectively carrying out Soxhlet extraction by using tetrahydrofuran,methanol and trichloromethane; and carrying out vacuum drying to obtain the porous organic polymer. The nitrogen-doped pi-conjugated porous carbon material prepared by the invention is high in nitrogen content and can be used as an electrode material of a supercapacitor, the maximum specific capacitance can reach 366F / g, and the nitrogen-doped pi-conjugated porous carbon material has a good application prospect in the field of electrochemistry.
Description
technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a Friedel-Crafts reaction-based π-conjugated porous carbon material that can be used for supercapacitor electrodes, and a preparation method and application thereof. Background technique [0002] Due to the increasing energy consumption and growing environmental concerns, the research of energy storage technology has become a hot topic of public discussion. Researchers are working hard to explore the development of clean, efficient and green energy sources, such as fuel cells, lithium-ion batteries, Na / S batteries and supercapacitors. As an important complement to batteries, supercapacitors are essential electrochemical devices that have attracted extensive attention due to their low cost and high power density and long cycle life. Supercapacitors store energy through ion absorption (electric double-layer capacitance, EDLC) or fast surface redox reactions (pseudoc...
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