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A carbon-coated carbon nitride nanotube and its preparation method and application

A nanotube and carbon nitride technology is applied in the field of carbon-coated carbon nitride nanotubes and its preparation, which can solve the problems of expensive conductive polymers, complicated preparation process of supercapacitors, and high preparation costs, and achieves low cost and high price. The effect of low cost and simple preparation process

Active Publication Date: 2020-06-30
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, its disadvantage is that the preparation process of the supercapacitor is relatively complicated, the price of the conductive polymer added is relatively expensive, and the preparation cost is relatively high.

Method used

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  • A carbon-coated carbon nitride nanotube and its preparation method and application
  • A carbon-coated carbon nitride nanotube and its preparation method and application
  • A carbon-coated carbon nitride nanotube and its preparation method and application

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Effect test

Embodiment 1

[0029] A carbon-coated carbon nitride nanotube material, the carbon nitride nanotube material is prepared from a graphite-like carbon nitride precursor and a carbon source as a precursor by one-step roasting; the graphite-like carbon nitride The precursor is urea; the carbon source is glucose.

[0030] Its preparation method comprises the following steps:

[0031] (1) Weigh 6g of urea and 200mg of glucose into a 50mL crucible, inject 15mL of deionized water to completely dissolve the solid to obtain the corresponding mixed solution, transfer the crucible containing the mixed solution to an oven at 80°C and heat for 2 hours to remove part of the solution. Ionized water, the crucible is taken out and placed at room temperature for natural cooling, and the urea and glucose in the solution are recrystallized to form needle-like crystals.

[0032] (2) Transfer the needle-like crystals prepared in step (1) to a crucible, wrap the crucible in double layers with aluminum foil, and th...

Embodiment 2

[0034] A carbon-coated carbon nitride nanotube material, the carbon nitride nanotube material is prepared from a graphite-like carbon nitride precursor and a carbon source through recrystallization and roasting processes; the graphite-like carbon nitride The precursor is urea; the carbon source is glucose.

[0035] Its preparation method comprises the following steps:

[0036] (1) Weigh 6g of urea and 100mg of glucose into a 50mL crucible, inject 15mL of deionized water to completely dissolve the solid to obtain the corresponding mixed solution, transfer the crucible containing the mixed solution to an oven at 80°C and heat for 2 hours to remove part of the solution. Ionized water, the crucible is taken out and placed at room temperature for natural cooling, and the urea and glucose in the solution are recrystallized to form needle-shaped crystals;

[0037] (2) Transfer the needle-like crystals prepared in step (1) to a crucible, wrap the crucible in double layers with alumin...

Embodiment 3

[0039] A carbon-coated carbon nitride nanotube material, the carbon nitride nanotube material is prepared from a graphite-like carbon nitride precursor and a carbon source as a precursor by one-step roasting; the graphite-like carbon nitride The precursor is urea; the carbon source is glucose.

[0040] Its preparation method comprises the following steps:

[0041] (1) Weigh 6g of urea and 300mg of glucose into a 50mL crucible, inject 15mL of deionized water to completely dissolve the solid to obtain the corresponding mixed solution, transfer the crucible containing the mixed solution to an oven at 80°C and heat for 2 hours to remove part of the solution. Ionized water, the crucible is taken out and placed at room temperature for natural cooling, and the urea and glucose in the solution are recrystallized to form needle-like crystals.

[0042](2) Transfer the needle-like crystals prepared in step (1) to a crucible, wrap the crucible in double layers with aluminum foil, and the...

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Abstract

The invention relates to a carbon-coated carbon nitride nanotube and a preparation method thereof. Specifically, a carbon-coated carbon nitride nanotube material is prepared by a one-step calcinationmethod using a mixture of a graphite-like phase carbon nitride precursor and a carbon source as a product precursor, and is used as a supercapacitor electrode material for capacitance performance testing. The carbon nitride prepared by the method has a nano-tubular structure, can obviously increase the specific surface area of the material and improve the capacitance performance of the material, and the carbon material coated on the surface overcomes the defect of poor conductivity of the carbon nitride itself. Compared with bulk carbon nitride capacitor, the material has obvious improvement in capacitance, excellent cycling stability in the process of 1000 cycles charge and discharge, simple preparation and low cost, and has good application prospects in the fields of electric power storage, smart grid and new energy vehicles and so on.

Description

technical field [0001] The invention belongs to the technical field of material preparation and supercapacitors, and in particular relates to a carbon-coated carbon nitride nanotube and its preparation method and application. [0002] technical background [0003] As a new type of energy storage element, supercapacitor has the advantages of green and high efficiency. It combines the advantages of traditional batteries and capacitors, and has the advantages of fast charging rate, high power and energy density, good stability and long service life. Supercapacitor, as an electrical storage element with broad development prospects, has a wide range of applications in energy storage, power transmission, aerospace, national defense and other fields, and is also one of the ideal energy storage devices to overcome the energy crisis in the world today. [0004] Carbon nitride materials, as the first class of compounds studied by people, have the characteristics of simple preparation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/32H01G11/36H01G11/86
CPCH01G11/32H01G11/36H01G11/86Y02E60/13
Inventor 徐慎刚林治王柯王雪兆刘应良曹少魁
Owner ZHENGZHOU UNIV