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Titanium nitride/silicon nitride/carbon nitride/graphene composite nanomaterial and preparation method thereof

A composite nanomaterial, graphene composite technology, applied in graphene, chemical instruments and methods, nanocarbon and other directions, can solve the problem of few titanium nitride multi-component nanocomposite materials, and achieve good stable cycle performance, high conductivity and high conductivity. The effect of heat conduction and low production cost

Active Publication Date: 2017-03-22
厦门友连科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, there have been many studies on nanostructured TiN, but the existing reports mainly focus on the preparation and properties of titanium nitride nanoparticles and titanium nitride films, while the research on titanium nitride multi-component nanocomposites is very limited. few
However, the multi-component composite nanomaterials with excellent properties prepared by compounding titanium nitride, silicon nitride, carbon nitride and graphene have not been reported yet.

Method used

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  • Titanium nitride/silicon nitride/carbon nitride/graphene composite nanomaterial and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] A preparation method of titanium nitride / silicon nitride / carbon nitride / graphene composite nanomaterial, comprising the steps of:

[0025] (1) Preparation of titanium nitride / silicon nitride composite nanomaterials: Add 15g of titanium citrate and 20g of silica sol to 2g, 0.006mol / L polyvinylpyrrolidone and 70 mL of absolute ethanol in sequence under constant stirring / DMF mixed solution, and stirred at 30°C for 8 hours to obtain a uniform mixed precursor solution, and then put the precursor solution into a syringe with a spinneret for spinning. The spinning conditions are: The sample rate is 0.6m1 / h, the voltage between the plates is 1kv / cm, and the precursor fiber is obtained; the precursor fiber is heat-treated at 700°C in the air for 4 hours, and then naturally cooled to room temperature to obtain a titanium-silicon oxide composite Nanofibers; then the above-mentioned nanofibers are placed in a tube furnace, and high-purity nitrogen gas is passed into the furnace at...

Embodiment 2

[0028] A preparation method of titanium nitride / silicon nitride / carbon nitride / graphene composite nanomaterial, comprising the steps of:

[0029](1) Preparation of titanium nitride / silicon nitride composite nanomaterials: Add 20 g of titanium citrate and 30 g of silica sol to 3 g of 0.007 mol / L polyvinylpyrrolidone and 90 mL of absolute ethanol in sequence under constant stirring / DMF mixed solution, and stirred at 40°C for 4 hours to obtain a uniform mixed precursor solution, and then put the precursor solution into a syringe with a spinneret for spinning. The spinning conditions are: The sample rate is 0.6m1 / h, the voltage between the plates is 2kv / cm, and the precursor fiber is obtained; the precursor fiber is heat-treated at 800°C in the air for 3 hours, and then naturally cooled to room temperature to obtain a titanium-silicon oxide composite Nanofibers; then the above-mentioned nanofibers are placed in a tube furnace, and high-purity nitrogen gas is passed into the furna...

Embodiment 3

[0032] A preparation method of titanium nitride / silicon nitride / carbon nitride / graphene composite nanomaterial, comprising the steps of:

[0033] (1) Preparation of titanium nitride / silicon nitride composite nanomaterials: Add 18 g of titanium citrate and 25 g of silica sol to 2.5 g of 0.007 mol / L polyvinylpyrrolidone and 80 mL of anhydrous In the mixed solution of ethanol / DMF, and stirred at 36°C for 7 hours to obtain a uniform mixed precursor solution, then put the precursor solution into a syringe with a spinneret for spinning. The spinning conditions are: The injection rate is 0.6m1 / h, the voltage between the plates is 1.2kv / cm, and the precursor fiber is obtained; then the precursor fiber is heat-treated at 700°C in the air for 4 hours, and then naturally cooled to room temperature to obtain titanium silicon Oxide composite nanofibers; then the above-mentioned nanofibers are placed in a tube furnace, and high-purity nitrogen gas is passed into the furnace at a flow rate o...

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Abstract

The invention provides a preparation method of a titanium nitride / silicon nitride / carbon nitride / graphene composite nanomaterial. The method comprises the steps of firstly obtaining a titanium nitride / silicon nitride composite nanomaterial and then obtaining the composite material through a hydrothermal method under the action of a template agent lysine. The obtained material is in a uniform fiber form, the diameter of the fiber is dozens of nanometers, the pore volume is 0.36-0.47cm<3> / g and the specific surface area is 220-280m<2> / g; the prepared nanomaterial has excellent properties of extremely high specific surface area, ultrahigh mechanical property, high conductivity and thermal conductivity and the like, is beneficial to electron transfer in an electrode reaction process when used as a lithium-ion electrode material, is small in absolute volume change in charging and discharging processes, and has high electrochemical lithium storage capacity, good stable cycle performance and a relatively small energy loss; the electrochemical properties of a composite nanomaterial electrode are strengthened; and the application prospect is very wide.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial application, and in particular relates to a titanium nitride / silicon nitride / carbon nitride / graphene composite nanomaterial and a preparation method and application thereof. Background technique [0002] The study of nanomaterials is a frontier field in today's scientific research, and it is also a hot spot studied by many scientists all over the world. The magic and unknown aspects of nanomaterials have aroused people's widespread attention; the research and application of nanomaterials are currently hot spots and difficulties, and are also the focus of high-tech development. [0003] Carbon nitride is a class of organic semiconductor photocatalytic materials widely used in photolysis of water and photodegradation of organic pollutants. Carbon nitride is generally prepared by polymerization of nitrogen-containing precursors at high temperature. However, the bulk carbon nitride prepared by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/587H01M10/0525C01B32/184
CPCC01B2204/22C01B2204/32C01P2004/03C01P2004/61H01M4/364H01M4/58H01M4/587H01M10/0525Y02E60/10
Inventor 向红先
Owner 厦门友连科技有限公司
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