Ellipsoidal nitrogen-doped mesoporous carbon, and preparation method and applications thereof

A nitrogen-doped mesoporous carbon, ellipsoid technology, applied in the preparation/purification of carbon, the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., to achieve the effects of easy replication, easy control, and good electrochemical performance

Inactive Publication Date: 2013-11-27
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there is no report on the preparation of ellipsoidal nitrogen-doped mesoporous carbon

Method used

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  • Ellipsoidal nitrogen-doped mesoporous carbon, and preparation method and applications thereof
  • Ellipsoidal nitrogen-doped mesoporous carbon, and preparation method and applications thereof
  • Ellipsoidal nitrogen-doped mesoporous carbon, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for preparing an ellipsoidal nitrogen-doped mesoporous carbon material, specifically comprising the steps of:

[0050] (1) Dissolve 0.08g of nitrogen-containing precursor in 20ml of ethanol, add 1.0g of ellipsoidal mesoporous silica, then add 1.51g of organic high molecular polymer, and stir to make the organic high molecular polymer and nitrogen-containing precursor The body is fully immersed in the pores of ellipsoidal mesoporous silica, and after the ethanol solvent is volatilized, it is dried at 30°C for 24 hours to obtain nitrogen-doped ellipsoidal mesoporous carbon;

[0051] The amount of the above-mentioned ellipsoidal mesoporous silica, organic polymer, nitrogen-containing precursor and ethanol, according to ellipsoidal mesoporous silica: organic polymer: nitrogen-containing precursor: ethanol is 1g: 1.51g: 0.08g: 20ml ratio calculation;

[0052] The ellipsoidal mesoporous silica has a ratio of major axis to minor axis of 1.732 and a pore volume of 1.0...

Embodiment 2

[0065] A method for preparing an ellipsoidal nitrogen-doped mesoporous carbon material, specifically comprising the steps of:

[0066] (1) Weigh 0.27g of nitrogen-containing precursor and dissolve it in hot deionized water, add 1.0g of ellipsoidal mesoporous silica, stir for 1 hour and place it on the top of the oven until the water evaporates completely, then add 1.36g of organic high Stir the molecular polymer and 20ml of ethanol so that the organic polymer and the nitrogen-containing precursor are fully immersed in the pores of the ellipsoidal mesoporous silica. After the ethanol solvent has evaporated, dry it at 55°C for 24 hours to obtain nitrogen Doped ellipsoidal mesoporous carbon;

[0067] The amount of the above-mentioned ellipsoidal mesoporous silica, organic polymer, nitrogen-containing precursor and ethanol, according to ellipsoidal mesoporous silica: organic polymer: nitrogen-containing precursor: ethanol is 1g: 1.36 g: 0.27g: 20ml ratio calculation;

[0068] Th...

Embodiment 3

[0077] A method for preparing an ellipsoidal nitrogen-doped mesoporous carbon material, specifically comprising the steps of:

[0078] (1) Dissolve 0.31g of nitrogen-containing precursor in 20ml of ethanol, add 1.0g of ellipsoidal mesoporous silica, then add 0.61g of organic polymer, and stir to make the organic polymer and nitrogen-containing precursor Immerse fully into the pores of mesoporous silica, and dry at 55°C for 24 hours after the ethanol solvent evaporates to obtain nitrogen-doped ellipsoidal mesoporous carbon;

[0079] The amount of the above-mentioned ellipsoidal mesoporous silica, organic polymer, nitrogen-containing precursor and ethanol, according to ellipsoidal mesoporous silica: organic polymer: nitrogen-containing precursor: ethanol is 1g: 0.61g: 0.31g: 20ml ratio calculation;

[0080] The ellipsoidal mesoporous silica has a ratio of major axis to minor axis of 1.732 and a pore volume of 1.0-1.5 cm 3 / g;

[0081] Described organic polymer is furfuryl alc...

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Abstract

The invention discloses a preparation method of ellipsoidal nitrogen-doped mesoporous carbon. Ellipsoidal mesoporous silica is taken as a hard template, an organic high-molecular polymer is taken as a carbon source, a precursor containing nitrogen is taken as a nitrogen source, and ethanol is taken as a solvent. The preparation method comprises following steps: full immersing of the carbon source and the nitrogen source into the pores of ellipsoidal mesoporous silica is realized by stirring, and ellipsoidal mesoporous silica is dried after complete volatilization of ethanol so as to obtain nitrogen-doped ellipsoidal mesoporous carbon; in nitrogen atmosphere, nitrogen-doped ellipsoidal mesoporous carbon is heated to 600 DEG C at a heating rate of 1 DEG C/min, and is calcined for 2h, and then nitrogen-doped ellipsoidal mesoporous carbon is heated to 700 to 1000 DEG C at a heating rate of 2 DEG C/min, and is calcined for 2h so as to obtain an ellipsoidal mesoporous carbon/silica composite material; and then the ellipsoidal mesoporous carbon/silica composite material is stirred in an acid solution for 2h, and is centrifuged, washed and washed so as to obtain ellipsoidal nitrogen-doped mesoporous carbon. Stacking density of ellipsoidal nitrogen-doped mesoporous carbon is relatively high, and the mesoporous structure is orderly, so that ellipsoidal nitrogen-doped mesoporous carbon can be used as an electrode material for preparation of supercapacitors.

Description

technical field [0001] The invention relates to an ellipsoidal nitrogen-doped mesoporous carbon material, a preparation method thereof, and an application thereof in making electrode materials for supercapacitors, belonging to the fields of inorganic nanometer materials and electrochemistry. Background technique [0002] As a new class of porous materials, ordered mesoporous carbons are widely used in catalysis, adsorption, Various fields of electrochemistry, energy storage and biology. The functionalization of mesoporous carbon materials by doping with heteroatoms has important research value and application prospects for improving their performance. Among the many dopants, nitrogen is the most sought after element by researchers. Nitrogen is in the fifth main group of the periodic table of elements, adjacent to carbon atoms, and the atomic radius is also close to that of carbon atoms, so the doping of nitrogen atoms can make the lattice distortion of carbon materials sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02H01G11/38H01G11/86C01B32/05
CPCY02E60/13
Inventor 王静沈绍典朱贤毛东森卢冠忠
Owner SHANGHAI INST OF TECH
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