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Clubbed phosphor-doped mesoporous carbon as well as preparation method and application thereof

A mesoporous carbon and phosphorus doping technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of supercapacitor performance research, no special morphology, etc., and achieve good electrochemical performance, easy control, and good thermal stability. Effect

Inactive Publication Date: 2014-12-10
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, nitrogen-doped materials are used in supercapacitor electrode materials, and the electrochemical performance is better; but there are relatively few studies on the supercapacitor performance of phosphorus-doped carbon composites.
[0007] So far, there have been no reports of phosphorus-doped mesoporous carbons with special morphology such as rods

Method used

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  • Clubbed phosphor-doped mesoporous carbon as well as preparation method and application thereof
  • Clubbed phosphor-doped mesoporous carbon as well as preparation method and application thereof
  • Clubbed phosphor-doped mesoporous carbon as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing a rod-shaped phosphorus-doped mesoporous carbon material, specifically comprising the steps of:

[0049] (1) Dissolve 0.11g of phosphorus-containing precursor in 20g of ethanol, add 1.0g of rod-shaped mesoporous silica, and then add 1.13g of organic polymer, stir to make it fully mixed, and then place it Drying at 40°C for 24 hours at room temperature until ethanol is completely volatilized to obtain a carbon source / phosphorus source / silicon dioxide composite;

[0050] The amount of rod-shaped mesoporous silica, organic polymer, phosphorus-containing precursor and ethanol used above is according to the mass ratio of rod-shaped mesoporous silica: organic polymer: phosphorus-containing precursor: ethanol Calculated for the ratio of 1:1.13:0.11:20;

[0051] The pore volume of the rod-shaped mesoporous silica is 1.0-1.5 cm 3 / g, the long axis is 2.80 μm, the short axis is about 0.55 μm, and the axial ratio is 5.1;

[0052] Described organic macromo...

Embodiment 2

[0065] A method for preparing a rod-shaped phosphorus-doped mesoporous carbon material, specifically comprising the steps of:

[0066] (1) Dissolve 0.33g of phosphorus-containing precursor in 20g of ethanol, then add 1.0g of rod-shaped mesoporous silica, then add 1.11g of organic polymer and stir to make the organic polymer and The phosphorus-containing precursor is fully immersed in the pores of the rod-shaped mesoporous silica, and then placed at room temperature until the ethanol solvent evaporates, and then dried at 60°C for 24 hours to obtain a carbon source / phosphorus source / silicon dioxide composite thing;

[0067] The amount of rod-shaped mesoporous silica, organic polymer, phosphorus-containing precursor and ethanol used above is based on the mass ratio of rod-shaped mesoporous silica: organic polymer: phosphorus-containing precursor: ethanol Calculated for the ratio of 1:1.11:0.33:20;

[0068] The pore volume of the rod-shaped mesoporous silica is 1.0-1.5 cm 3 / g,...

Embodiment 3

[0077] A method for preparing a rod-shaped phosphorus-doped mesoporous carbon material, specifically comprising the steps of:

[0078] (1) Dissolve 0.58g of phosphorus-containing precursor in 20g of ethanol, add 1.0g of rod-shaped mesoporous silica, and then add 1.16g of organic polymer, stir to make the organic polymer and phosphorus-containing The precursor is fully immersed in the pores of rod-shaped mesoporous silica, and then placed at room temperature until ethanol is completely volatilized, and then dried at 80°C for 24 hours to obtain a phosphorus source / carbon source / silicon dioxide composite;

[0079] The amount of rod-shaped mesoporous silica, organic polymer, phosphorus-containing precursor and ethanol used above, according to the mass ratio of rod-shaped mesoporous silica: organic polymer: phosphorus-containing precursor: ethanol is 1:1.16:0.58:20 ratio calculation;

[0080] The pore volume of the rod-shaped mesoporous silica is 1.0-1.5 cm 3 / g, the long axis is...

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Abstract

The invention discloses clubbed phosphor-doped mesoporous carbon as well as a preparation method and an application thereof. The clubbed phosphor-doped mesoporous carbon is of a mesoporous structure; in terms of atomic percent, the clubbed phosphor-doped mesoporous carbon comprises 0.51-0.66% of phosphor element and the balance of carbon; and the aperture distribution of the clubbed phosphor-doped mesoporous carbon is 1.57-2.04nm, the specific surface area is 942-1513m<2> / g and the pore volume is 0.85-1.18cm<3> / g. The preparation method comprises the following steps: mixing clubbed mesoporous silicon dioxide, an organic high-molecular polymer, a phosphor-containing precursor and ethyl alcohol; stirring to ensure that the carbon source and the phosphor source are sufficiently dipped into the pore passage of the mesoporous silicon dioxide; after the ethyl alcohol fully volatilizes, drying to obtain a phosphor source / carbon source / silicon dioxide compound; carrying out high-temperature carbonization to obtain a clubbed phosphor-doped mesoporous carbon / silicon dioxide compound; putting the clubbed phosphor-doped mesoporous carbon / silicon dioxide compound in a hydrofluoric acid water solution to remove the silicon dioxide; and drying to obtain the clubbed phosphor-doped mesoporous carbon which is used for preparing electrode materials for super capacitors.

Description

technical field [0001] The invention relates to a rod-shaped phosphorus-doped mesoporous carbon material, a preparation method thereof, and an application thereof for making electrode materials for supercapacitors, belonging to the fields of inorganic nanometer materials and electrochemistry. Background technique [0002] According to different electronic energy storage mechanisms, supercapacitors are divided into electric double layer capacitors and pseudocapacitive capacitors, which have higher power density, fast charge and discharge process and longer cycle life compared with secondary batteries and traditional capacitors. The core part of the supercapacitor is the electrode material. At present, the carbon-based porous material is mainly used in the electrode of the supercapacitor, and the material is required to have a large specific surface area and a suitable pore size. In order to improve the performance of carbon-based materials, people have focused on the change o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02H01G11/36H01G11/24
CPCY02E60/13
Inventor 王静沈绍典任晓丹毛东森卢冠忠
Owner SHANGHAI INST OF TECH
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