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A carbon microsphere as a transition layer titanium carbide in-situ growth cnts three-dimensional composite material and its preparation method

A composite material and in-situ growth technology, applied to structural parts, electrical components, battery electrodes, etc., can solve the problem of high price, achieve low equipment requirements, realize industrialized mass production, and low cost effects

Active Publication Date: 2019-01-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Yan et al. 3 C 2 Ti 3 C 2 Thin slices, the commercial CNTs were sonicated to obtain a stable suspension, and then the Ti 3 C 2 The flakes and CNTs were thoroughly mixed with different mass ratios by ultrasonic treatment, and then the mixture was filtered and dried to obtain Ti 3 C 2 / CNT composite materials; but the price of commercial CNTs is relatively high

Method used

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  • A carbon microsphere as a transition layer titanium carbide in-situ growth cnts three-dimensional composite material and its preparation method
  • A carbon microsphere as a transition layer titanium carbide in-situ growth cnts three-dimensional composite material and its preparation method
  • A carbon microsphere as a transition layer titanium carbide in-situ growth cnts three-dimensional composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Ti 3 C 2 Preparation of @C composite materials;

[0039] First, 100mg of Ti 3 C 2 Add the nano powder into 60mL ultrapure water, ultrasonically disperse for 30min; then, add 0.4g glucose, stir at room temperature for 30min; secondly, transfer it to a 100mL hydrothermal kettle, and react at 180℃ for 10h to obtain Ti 3 C 2 @C Composite.

[0040] (2) Ti 3 C 2 Preparation of @C@CNTs three-dimensional composite materials;

[0041] First, 300mg of Ti 3 C 2 @C Nanopowder, add into 200mL ultrapure water, ultrasonically disperse for 30min; then, add 0.29g Co(NO 3 ) 2 ·6H 2 O, stirred at room temperature for 4 hours; secondly, 6.0 g of urea was added, and the above mixed solution was continuously stirred at a constant temperature of 80 °C to evaporate water to obtain a gray precursor; finally, the precursor powder was ground with an agate mortar, and transferred to In an Ar atmosphere tube furnace, heat up to 900°C at a heating rate of 4°C / min, pyrolyze for 1 hou...

Embodiment 2

[0046] (1) Ti 3 C 2 Preparation of @C composite materials;

[0047] First, 100mg of Ti 3 C 2 Add the nano powder into 60mL ultrapure water, ultrasonically disperse for 30min; then, add 0.3g glucose, stir at room temperature for 30min; secondly, transfer it to a 100mL hydrothermal kettle, and react at 180℃ for 10h to obtain Ti 3 C 2 @C Composite.

[0048] (2) Ti 3 C 2 Preparation of @C@CNTs three-dimensional composite materials;

[0049] First, 300mg of Ti 3 C 2 @C Nanopowder, add into 200mL ultrapure water, ultrasonically disperse for 30min; then, add 0.29g Co(NO 3 ) 2 ·6H 2O, stirred at room temperature for 4 hours; secondly, 6.0 g of urea was added, and the above mixed solution was continuously stirred at a constant temperature of 80 °C to evaporate water to obtain a gray precursor; finally, the precursor powder was ground with an agate mortar, and transferred to In an Ar atmosphere tube furnace, heat up to 900°C at a heating rate of 4°C / min, pyrolyze for 1 hour...

Embodiment 3

[0051] (1) Ti 3 C 2 Preparation of @C composite materials;

[0052] First, 100mg of Ti 3 C 2 Add nano powder into 60mL ultra-pure water, ultrasonically disperse for 30min; then, add 0.2g glucose, stir at room temperature for 30min; secondly, transfer to 100mL hydrothermal kettle, react at 180℃ for 10h, you can get Ti 3 C 2 @C Composite.

[0053] (2) Ti 3 C 2 Preparation of @C@CNTs three-dimensional composite materials;

[0054] First, 300mg of Ti 3 C 2 @C Nanopowder, add into 200mL ultrapure water, ultrasonically disperse for 30min; then, add 0.29g Co(NO 3 ) 2 ·6H 2 O, stirred at room temperature for 4 hours; secondly, 6.0 g of urea was added, and the above mixed solution was continuously stirred at a constant temperature of 80 °C to evaporate water to obtain a gray precursor; finally, the precursor powder was ground with an agate mortar, and transferred to In an Ar atmosphere tube furnace, heat up to 900°C at a heating rate of 4°C / min, pyrolyze for 1 hour, cool t...

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Abstract

The invention relates to a titanium carbide in-situ-growth CNTs three-dimensional composite material with carbon microspheres being transition layers and a preparing method thereof. The method comprises the steps of dispersing Ti3C2 nano powder into ultrapure water, then adding glucose after uniformly dispersing Ti3C2 nano powder, stirring the mixture for 5-30 min, and afterwards conducting a hydrothermal reaction to obtain a Ti3C2 @C composite material; adding the Ti3C2 @C composite material into the ultrapure water, then adding Co(NO3)2.6H2O into the ultrapure water after uniformly dispersing the Ti3C2 @C composite material, and stirring the mixture for a reaction for 2-6 h; then adding urea after the reaction is over, and conducting continuous stirring at a constant temperature to evaporate moisture to obtain precursor powder; conducting thermal treatment on the precursor powder to obtain the titanium carbide in-situ-growth CNTs three-dimensional composite material with the carbon microspheres being the transition layers. According to the titanium carbide in-situ-growth CNTs three-dimensional composite material with the carbon microspheres being the transition layers and the preparing method thereof, carbon nano tubes are grown on the surface of Ti3C2, the carbon nano tubes are utilized to provide an electron transferring channel, and thus the electric conductivity of the material is increased.

Description

【Technical field】 [0001] The invention belongs to the technical field of preparation of nanometer functional materials, in particular to a three-dimensional composite material with carbon microspheres used as a transition layer of titanium carbide in-situ grown CNTs and a preparation method thereof. 【Background technique】 [0002] Recently, the discovery of a class of materials known as MXenes has expanded the family of 2D materials, namely transition metal carbides or carbonitrides, which are structurally similar to graphene. MXene materials can be obtained by removing the A-layer elements in the MAX phase by etching and keeping the original MX structure unchanged, such as Ti 3 C 2 、Ti 2 C et al. Due to its high conductivity, large specific surface area, multilayer structure, good chemical stability and environmental friendliness, MXene has great application potential in the fields of lithium-ion batteries, supercapacitors, photocatalysis and sensors. In the field of ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36
CPCH01M4/364Y02E60/10
Inventor 朱建锋李学林王雷秦毅武文玲吕文静卫丹王芬
Owner SHAANXI UNIV OF SCI & TECH
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