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MXene/conductive polymer composite aerogel and preparation method thereof

A conductive polymer and composite aerogel technology, which is applied in the field of MXene/conductive polymer composite aerogel and its preparation, can solve the problems of affecting the cycle performance of materials, poor high current discharge performance, slow ion migration speed, etc. The effect of increasing surface utilization, mitigating structural collapse, and shortening reaction time

Active Publication Date: 2018-09-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process will destroy the physical structure of the material itself and produce a large volume expansion, which will affect the cycle performance of the material.
Secondly, the ion migration speed inside the material is slow, the high-current discharge performance is poor, and the power is not high.

Method used

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  • MXene/conductive polymer composite aerogel and preparation method thereof
  • MXene/conductive polymer composite aerogel and preparation method thereof
  • MXene/conductive polymer composite aerogel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A. Synthesis of MXene

[0039] Measure 2.5ml deionized water and 7.5ml HCl into a 100ml plastic bottle, add 1g LiF, stir for 5min until completely dissolved. 1g Ti 3 AlC 2 While stirring, add it into the above-mentioned plastic bottle, place it in a constant temperature water bath at 35°C and stir for 24 hours. Then the above product was centrifuged with a centrifuge, the upper light green supernatant was poured out, and water was added to stir and mix well. Centrifuge again, take out the upper layer liquid, promptly obtain MXene aqueous solution. The MXene aqueous solution is suction filtered and vacuum-dried to obtain the MXene solid matter ( figure 2 shown as neatly stacked MXene sheets);

[0040] The prepared 50mg MXene solid substance was added to 100ml NMP solvent, and ultrasonically stirred repeatedly to obtain a black uniformly dispersed MXene organic solution of 0.5mg / ml;

[0041] B. Synthesis of MXene / conductive polymer composite airgel

[0042] Take 1...

Embodiment 2

[0048] A. Synthesis of MXene

[0049] Measure 5ml of deionized water and 22.5ml of HCl into a 100ml plastic bottle, add 1.5g of LiF, stir for 3min until completely dissolved. 1.5g Ti 3 AlC 2 While stirring, add it into the above-mentioned plastic bottle, place it in a constant temperature water bath at 15°C and stir for 35 hours. Then the above product was centrifuged with a centrifuge, the upper light green supernatant was poured out, and water was added to stir and mix well. The supernatant was poured out by centrifugation and the operation was repeated 6 times, and the supernatant was taken out to obtain the MXene aqueous solution. The MXene aqueous solution is subjected to freeze-drying treatment to obtain MXene solid matter;

[0050] The prepared 100mg MXene solid substance was added to 20ml NMP solvent, and ultrasonically stirred repeatedly to obtain a 5mg / ml black uniformly dispersed MXene organic solution;

[0051] B. Synthesis of MXene / conductive polymer composit...

Embodiment 3

[0057] A. Synthesis of MXene

[0058] Measure 3ml of deionized water and 11ml of HCl into a 100ml plastic bottle, add 1.2g of LiF, stir for 3min until completely dissolved. 1.2g Ti 3 AlC 2 While stirring, add it into the above-mentioned plastic bottle, place it in a constant temperature water bath at 25°C and stir for 30 hours. Then the above product was centrifuged with a centrifuge, the upper light green supernatant was poured out, and water was added to stir and mix well. The supernatant was poured out by centrifugation and the operation was repeated 3 times, and the supernatant was taken out to obtain the MXene aqueous solution. The MXene aqueous solution is subjected to suction filtration and vacuum drying to obtain MXene solid matter;

[0059] The prepared 50mg MXene solid substance was added to 20ml NMP solvent, and ultrasonically stirred repeatedly to obtain a black uniformly dispersed MXene organic solution of 2.5mg / ml;

[0060] B. Synthesis of MXene / conductive p...

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Abstract

The invention discloses an MXene / conductive polymer composite aerogel. The MXene / conductive polymer composite aerogel is of an integrated three-dimensional grid structure which is formed by insertinglaminated MXene into a conductive polymer aerogel, wherein the conductive polymer comprises one or more of polyaniline, polypyrrole and polythiophene. The invention further discloses a preparation method of the MXene / conductive polymer composite aerogel. The method is characterized in that the MXene and the conductive polymer are mixed with organic solution and then are rapidly cooled and separated under heat inducing and solvent inducing effects under the inert gas protection; then the vacuum drying is carried out to obtain the MXene / conductive polymer composite aerogel.

Description

technical field [0001] The invention relates to an MXene / conductive polymer composite airgel and a preparation method thereof. Background technique [0002] Two-dimensional materials, such as graphene, hexagonal BN, MoS 2 , silicene, etc., have attracted extensive attention for their excellent properties. In 2001, Drexel University in the United States discovered another new type of two-dimensional material transition metal carbide or nitride MXene. The material has good conductivity, chemical and structural stability, and it has a good development prospect as an electrode material for supercapacitors. However, its specific surface area is not high, so its mass specific capacitance is low. Therefore, it is of great significance to conduct in-depth research on MXene materials and prepare two-dimensional materials with high specific surface area. [0003] Conductive polymer, as one of the three commonly used electrode materials, has high electrical conductivity, low produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08L79/04C08L65/00C08K3/14C08J9/26C08J9/28
CPCC08J9/26C08J9/28C08J2201/0482C08J2201/0502C08J2205/026C08J2205/05C08J2365/00C08J2379/02C08J2379/04C08K3/14C08L79/02C08L79/04C08L65/00
Inventor 徐斌胡龙丰
Owner BEIJING UNIV OF CHEM TECH
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