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Nitrogen-doped porous carbon material, preparation method thereof, and application of material in supercapacitor

A nitrogen-doped porous carbon and nitrogen source technology, applied in the field of material science, can solve the problems of low capacity of activated carbon materials and difficulty in meeting actual needs, and achieve the effect of increasing the concentration of nitrogen doping

Active Publication Date: 2019-08-16
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the capacity of commercial activated carbon materials is still low, which is difficult to meet the actual demand
Limited by the three factors mentioned above, there are very few carbon materials with excellent performance that can be used in practical applications

Method used

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  • Nitrogen-doped porous carbon material, preparation method thereof, and application of material in supercapacitor
  • Nitrogen-doped porous carbon material, preparation method thereof, and application of material in supercapacitor
  • Nitrogen-doped porous carbon material, preparation method thereof, and application of material in supercapacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Measure 10mL absolute ethanol, add 1g Ni(NO 3 ) 2 6H 2 O, 2g P-123, 1g C 2 h 4 N 4 , 2g phenolic resin, 4ml tetraethyl orthosilicate and 0.4ml dilute hydrochloric acid (1mol / L). After the added raw materials are completely dissolved to form a clear solution, continue stirring for a period of time. Pour the prepared sol into a watch glass and let it stand for 2 days to slowly hydrolyze, and then put it in an oven at 50°C to make it gel for 2 days. Then grind to a homogeneous powder. The samples were heat-treated in a tube furnace at a temperature of 1000 °C. Heating from room temperature to 1000°C, the heating rate is 5°C / min, protective gas (argon, 300sccm, hydrogen, 50sccm) is required during the heating process, when the temperature in the furnace rises to 600°C, ammonia (NH 3 , 100 sccm), when the temperature reaches 1000 ° C, methane gas (flow rate of 5 sccm) is introduced, and the temperature is kept at 1000 ° C for 120 min. After the sample was cooled to...

Embodiment 2

[0039] Measure 10mL absolute ethanol, add 1g Ni(NO 3 ) 2 6H 2 O, 2g P-123, 1g C 2 h 4 N 4 , 2g phenolic resin, 2ml tetraethyl orthosilicate and 0.4ml dilute hydrochloric acid (1mol / L). After the added raw materials are completely dissolved to form a clear solution, continue stirring for a period of time. Pour the prepared sol into a watch glass and let it stand for 2 days to slowly hydrolyze, and then put it in an oven at 50°C to make it gel for 2 days. Then grind to a homogeneous powder. The samples were heat-treated in a tube furnace at a temperature of 1000 °C. Heating from room temperature to 1000°C, the heating rate is 5°C / min, protective gas (argon, 300sccm, hydrogen, 50sccm) is required during the heating process, when the temperature in the furnace rises to 600°C, ammonia (NH 3 , 100 sccm), when the temperature reaches 1000 ° C, methane gas (flow rate of 5 sccm) is introduced, and the temperature is kept at 1000 ° C for 120 min. After the sample was cooled to...

Embodiment 3

[0042] Measure 10mL absolute ethanol, add 1g Ni(NO 3 ) 2 6H 2 O, 2g P-123, 1g C 2 h 4 N 4 , 2g phenolic resin, 1ml tetraethyl orthosilicate and 0.4ml dilute hydrochloric acid (1mol / L). After the added raw materials are completely dissolved to form a clear solution, continue stirring for a period of time. Pour the prepared sol into a watch glass and let it stand for 2 days to slowly hydrolyze, and then put it in an oven at 50°C to make it gel for 2 days. Then grind to a homogeneous powder. The samples were heat-treated in a tube furnace at a temperature of 1000 °C. Heating from room temperature to 1000°C, the heating rate is 5°C / min, protective gas (argon, 300sccm, hydrogen, 50sccm) is required during the heating process, when the temperature in the furnace rises to 600°C, ammonia (NH 3 , 100 sccm), when the temperature reaches 1000 ° C, methane gas (flow rate of 5 sccm) is introduced, and the temperature is kept at 1000 ° C for 120 min. After the sample was cooled to...

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Abstract

The invention relates to a nitrogen-doped porous carbon material, a preparation method thereof, and an application of the material in a supercapacitor. The preparation method of the nitrogen-doped porous carbon material comprises the following steps: (1) using anhydrous ethanol as a solvent, adding a nickel salt, a surfactant, a nitrogen source, a phenolic resin, ethyl orthosilicate and dilute hydrochloric acid, and performing mixing to obtain a sol, wherein the nickel salt is at least one of nickel nitrate, nickel chloride and nickel acetate, and the nitrogen source is at least one of dicyandiamide, cyanamide, urea and pyrrole; (2) standing the sol for a predetermined period of time, and drying the sol to obtain a gel; and (3) performing heat treatment on the gel at 700-1100 DEG C, and etching and washing the heat-treated gel to obtain the nitrogen-doped porous carbon material.

Description

technical field [0001] The invention relates to a nitrogen-doped porous carbon material and its preparation method and application in supercapacitors, in particular to a method for preparing a nitrogen-doped porous carbon material by using silica sol-gel and increasing the nitrogen doping concentration of the carbon material. It belongs to the field of material science and technology. Background technique [0002] Supercapacitors are a new class of energy storage devices that are widely used. Although the widely used activated carbon electrode material has many advantages, its energy density is low, which makes it difficult to meet the needs of the energy storage field. Not long ago, some researchers reported an ordered mesoporous graphene material prepared based on an ordered mesoporous silicon template. This material has an energy density comparable to that of a lithium battery, and at the same time can achieve fast charge and discharge. However, the ordered mesoporous g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05H01G11/24H01G11/30H01G11/38
CPCC01B32/05H01G11/24H01G11/30H01G11/38C01P2006/12Y02E60/13
Inventor 黄富强林天全许峰
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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