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Preparation method and application of unidirectional titanium carbide aerogel

A titanium carbide and aerogel technology, which is applied in titanium carbide, chemical instruments and methods, carbides, etc., to achieve the effects of broad application prospects, simple preparation methods and strong reproducibility

Active Publication Date: 2022-04-15
HARBIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that most of the existing airgel materials are isotropic, and provide a method for preparing a unidirectional titanium carbide airgel

Method used

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  • Preparation method and application of unidirectional titanium carbide aerogel
  • Preparation method and application of unidirectional titanium carbide aerogel
  • Preparation method and application of unidirectional titanium carbide aerogel

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specific Embodiment approach 1

[0025] Embodiment 1: The preparation method of the unidirectional titanium carbide airgel in this embodiment is implemented according to the following steps:

[0026] 1. Add 1~2g LiF into 20~25mL concentrated HCl solution and stir, then add Ti in several times 3 AlC 2 The powder is stirred and reacted in a water bath under the heating condition of 30-45°C to obtain a reaction liquid;

[0027] Two, the reaction solution obtained in step one is centrifuged, and the solid phase precipitate is collected;

[0028] 3. First use the HCl aqueous solution with a mass concentration of 3% to 5% at 7000 to 9000r / min to centrifuge and wash the solid phase precipitate several times, and then use a LiCl aqueous solution with a mass concentration of 3% to 5% at 7000 to 9000r / min The solid-phase sediment was centrifuged and washed several times in 1 min, and then deionized water was added for washing, and repeated several times until the pH value of the supernatant was 5-7, then the speed of...

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass concentration of the concentrated HCl solution described in step 1 is 36% to 38%.

specific Embodiment approach 3

[0035] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the water bath stirring reaction time in step 1 is 40-60 h.

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Abstract

The invention discloses a preparation method and application of unidirectional titanium carbide aerogel, and aims to solve the problem that most of existing aerogel materials are isotropic. The preparation method comprises the following steps: adding LiF into a concentrated HCl solution, stirring, then adding Ti3AlC2 powder, and carrying out water bath stirring reaction to obtain a reaction solution; 2, sequentially carrying out centrifugal treatment by using an HCl aqueous solution and a LiCl aqueous solution; 3, centrifugally cleaning, and collecting to obtain a supernatant liquid; 4, carrying out centrifugal treatment on the supernatant liquid; 5, adding deionized water into the solid-phase precipitate to obtain uniform slurry; 6, directionally freezing the uniform slurry to obtain a solid frozen material; and 7, carrying out freeze drying treatment on the solid frozen substance. The titanium carbide aerogel with the unidirectionality obtained by the preparation method disclosed by the invention has unidirectionality in morphology and anisotropy in property. When the titanium carbide aerogel is used as a working electrode of a supercapacitor, the characteristic of high area specific capacitance is shown.

Description

technical field [0001] The invention relates to a preparation method and application of titanium carbide airgel. Background technique [0002] With the growing demand for energy and the consumption of traditional fossil fuels, carbon dioxide emissions pose a threat to life systems. my country has proposed the goal of achieving carbon peaking in 2030 and carbon neutrality in 2060. In such an era background, it is imminent to find green energy. Since the MXene material was synthesized for the first time in 2011, due to its excellent electrical properties, optical properties, thermal stability and mechanical properties, it is expected to be used in energy storage, catalysis, adsorption, hydrogen storage, sensors and new polymer enhancements. Composite materials and many other fields. So far, more than 70 MAX phases have been reported, and the successfully prepared MXene mainly includes Ti 3 C 2 , Ti 2 C,Mo 2 C, Ti 3 CN, Ta 4 C 3 , Nb 2 C, V 2 C, Nb 4 C 3 and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921B01J13/00H01G11/32H01G11/30H01G11/86
CPCY02E60/13
Inventor 高红王睿张天择肖钧鹏姚静张明义
Owner HARBIN NORMAL UNIVERSITY
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