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Nitrogen-sulfur-phosphorus doped ordered mesoporous carbon material, preparation method and application thereof

A technology of mesoporous carbon and carbon materials, which is applied in the field of nitrogen, sulfur, and phosphorus doped ordered mesoporous carbon materials and their preparation, can solve the problem of producing ordered mesoporous carbon materials, large size, and insufficient structure of ordered mesoporous carbon materials. Uniformity and other issues, to achieve the effects of good uniformity, improved capacitance performance, and large specific surface area

Active Publication Date: 2021-04-09
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The possible problem with this method is that pyrrole will immediately undergo polymerization reaction when it encounters sulfuric acid, and some of the generated polymers are too large to fully enter the nanoscale pores of SBA-15, resulting in some polymers not utilizing SBA-15. Production of ordered mesoporous carbon materials with nanoscale pores
Due to the limitation of the nano-sized pores of ordered mesoporous silica, it is difficult to completely fill the precursors into the pores of ordered mesoporous silica in the prior art, and some precursors or the products of the interaction of precursors are not filled into the pores. channels, resulting in the inhomogeneous structure of the synthesized ordered mesoporous carbon materials

Method used

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  • Nitrogen-sulfur-phosphorus doped ordered mesoporous carbon material, preparation method and application thereof
  • Nitrogen-sulfur-phosphorus doped ordered mesoporous carbon material, preparation method and application thereof
  • Nitrogen-sulfur-phosphorus doped ordered mesoporous carbon material, preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0033] (1) Preparation of nitrogen, sulfur, phosphorus ordered mesoporous carbon materials

[0034] Add 0.10g of phosphoric acid and 0.10g of sulfuric acid into 5mL of methanol, stir evenly, add 1.0g of ordered mesoporous silica molecular sieve SBA-15, ultrasonicate for 5min, then heat in a water bath at 90°C to evaporate the solvent, and fry to dryness Finally, SBA-15 loaded with sulfuric acid and phosphoric acid in the pores was obtained. Put 1.0g of SBA-15 loaded with sulfuric acid and phosphoric acid at the bottom of the inner tank of the hydrothermal kettle, and then place the small glass bottle containing 0.20g of pyrrole and 0.30g of 2-aminopyrrole in the hydrothermal kettle, at 180°C After heating for 2 hours to volatilize pyrrole and 2-aminopyrrole, gas phase pyrrole and gas phase 2-aminopyrrole also enter the pores of SBA-15, and polymerize with sulfuric acid and phosphoric acid in the pores to obtain polypyrrole compounds and SBA-15 compound. The composite was car...

Embodiment 2

[0038] (1) Preparation of nitrogen, sulfur, phosphorus ordered mesoporous carbon materials

[0039]Add 0.20g of phosphoric acid and 0.10g of sulfuric acid into 5mL of methanol, stir evenly, add 1.0g of ordered mesoporous silica molecular sieve SBA-15, ultrasonicate for 5min, then heat in a water bath at 90°C to evaporate the solvent, and fry to dryness Finally, SBA-15 loaded with sulfuric acid and phosphoric acid in the pores was obtained. Put 1.0g of SBA-15 loaded with sulfuric acid and phosphoric acid at the bottom of the inner tank of the hydrothermal kettle, and then place the small glass bottle containing 0.30g of pyrrole and 0.20g of 2-aminopyrrole in the hydrothermal kettle, at 180°C After heating for 2 hours to volatilize pyrrole and 2-aminopyrrole, gas phase pyrrole and gas phase 2-aminopyrrole also enter the pores of SBA-15, and polymerize with sulfuric acid and phosphoric acid in the pores to obtain polypyrrole compounds and SBA-15 compound. The composite was carb...

Embodiment 3

[0043] (1) Preparation of nitrogen, sulfur, phosphorus ordered mesoporous carbon materials

[0044] Add 0.40g of phosphoric acid and 0.40g of sulfuric acid into 5mL of methanol, stir evenly, add 1.0g of ordered mesoporous silica molecular sieve SBA-15, ultrasonicate for 5min, then heat in a water bath at 90°C to volatilize the solvent, and fry to dryness Finally, SBA-15 loaded with sulfuric acid and phosphoric acid in the pores was obtained. Put 1.0g of SBA-15 loaded with sulfuric acid and phosphoric acid at the bottom of the inner tank of the hydrothermal kettle, and then place the small glass bottle containing 0.10g of pyrrole and 0.10g of 2-aminopyrrole in the hydrothermal kettle, at 180°C After heating for 2 hours to volatilize pyrrole and 2-aminopyrrole, gas phase pyrrole and gas phase 2-aminopyrrole also enter the pores of SBA-15, and polymerize with sulfuric acid and phosphoric acid in the pores to obtain polypyrrole compounds and SBA-15 compound. The composite was ca...

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Abstract

The invention discloses a nitrogen-sulfur-phosphorus doped ordered mesoporous carbon material, a preparation method and application thereof, wherein the nitrogen-sulfur-phosphorus doped ordered mesoporous carbon material has an ordered mesoporous structure and is doped with three elements of nitrogen, sulfur and phosphorus, and a precursor is filled into the pore channels of ordered mesoporous silicon oxide SBA-15 through a two-step method, wherein the first step is that mixed acid of phosphoric acid and sulfuric acid is filled into the pore channels of SBA-15 through an impregnation method, and the second step is that gas-phase pyrrole and 2-aminopyrrole are introduced into the pore channels of SBAe15 in a hydrothermal kettle, and an inorganic acid and a pyrrole compound are subjected to a polymerization reaction to generate a polypyrrole compound. According to the invention, the nitrogen-sulfur-phosphorus doped ordered mesoporous carbon material is obtained through high-temperature carbonization and template removal, and has a large specific surface area, a large pore volume and excellent super-capacitor performance.

Description

technical field [0001] The invention relates to an ordered mesoporous carbon material, in particular to an ordered mesoporous carbon material doped with nitrogen, sulfur and phosphorus, and a preparation method and application thereof. Background technique [0002] As a new type of electrochemical energy storage device, supercapacitor has the advantages of high charge and discharge efficiency, long cycle life, good environmental performance, safety and reliability, and high power density. The electrode material of supercapacitor is a key factor in determining the performance of supercapacitor. factor. Activated carbon is the most widely used electrode material for supercapacitors. However, the microporous structure, hydrophobicity and lack of active sites of activated carbon limit its application in the field of supercapacitors. Heteroatom doping is an effective means to improve surface wettability and electrochemical performance. The existence of heteroatoms can improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05H01G11/24H01G11/32H01G11/86
CPCC01B32/05H01G11/86H01G11/24H01G11/32Y02E60/13
Inventor 胡庚申高孙铭姜伟王月娟
Owner ZHEJIANG NORMAL UNIVERSITY
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