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Preparation method and application of functionalized MXene-based conductive composite material

A conductive composite material and composite material technology, applied in the field of preparation of functional MXene-based conductive composite materials, can solve the problems of reducing the electrochemical performance of MXene, hindering ions from entering the active surface, and prone to brittle crack damage, etc., so as to improve the electrochemical performance , fast charge/discharge rate, effect of promoting peeling

Pending Publication Date: 2022-07-05
南通市生态环境监控中心(南通市机动车排污监督管理中心)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a preparation method and application of a functionalized MXene-based conductive composite material, which solves the problem of polymerizing and re-stacking the existing synthesized MXene material sheet structure, preventing ions from entering the active surface , reduces the electrochemical performance of MXene materials, and the flexibility is not high, and the problem of brittle crack damage is prone to occur after long-term use

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: A preparation method and application of a functionalized MXene-based conductive composite material. The preparation method of the MXene conductive composite material is as follows: Step 1: Preparation of MXene material: after washing TisC2Tx with deionized water, adding chlorinated The lithium solution is stirred for reaction, washed with deionized water and organic solvent in turn, centrifuged, sonicated, and suction filtered to obtain the MXene material.

[0026] Step: 2. Prepare graphene oxide dispersion: Dissolve graphene oxide material in isopropanol according to the mass-volume ratio of 50-500 mg / ml, carry out probe ultrasonication with isopropanol containing graphite oxide washing material, and after the probe ultrasonication is completed Centrifuge the isopropanol containing titanium carbide / graphite oxide material at 8,000-15,000 rpm for 10-30 min, collect the precipitate, immerse the precipitate in a reducing reagent to reduce, and then centrifuge, c...

Embodiment 2

[0027] Example 2: The difference between this example and Example 2 is: Step 1: Preparation of MXene material: after washing TisC2Tx with deionized water, adding lithium chloride solution to stir the reaction, washing with deionized water and organic solvent in turn, centrifuging , ultrasonic, and suction filtration to obtain the MXene material.

[0028] Step 2: Preparation of nitrogen-carbon dispersion composite material: put lgMAXene in a 50 mL plastic beaker, and then slowly add 10 mL of hydrofluoric acid solution dropwise. After the dropwise addition is complete, place the plastic beaker with the suspension at 60° Stir vigorously in the water bath of C for 18 hours, after the reaction is completed, centrifuge 3 times each with ethanol and distilled water. Dissolve the black solid material in 150 mL of methanol mixture (methanol ratio: distilled water = 2:1), then weigh 0.3 g of zinc nitrate hexahydrate and 0.66 g of 2-methylimidazole, respectively, and dissolve in 20 mL of...

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PUM

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Abstract

The invention discloses a preparation method and application of a functionalized MXene-based conductive composite material, the functionalized MXene-based conductive composite material comprises an MXene conductive composite material, and the preparation method of the MXene conductive composite material comprises the following steps: S1, preparing an MXene material; s2, preparing a graphene oxide dispersion liquid; s3, preparing a nitrogen-carbon dispersion composite material; and S4, mixing and processing the MXene material prepared in the steps S1, S2 and S3, the graphene oxide dispersion liquid and the nitrogen-carbon dispersion composite material to prepare the MXene conductive composite material. The invention relates to the technical field of MXene conductive composite materials. According to the preparation method and application of the functionalized MXene-based conductive composite material, the problems that an existing synthesized MXene material lamellar structure is subjected to polymerization and re-stacking, ions are prevented from entering an active surface, the electrochemical performance of the MXene material is reduced, the flexibility is not high, and embrittlement damage is likely to happen after long-time use are solved.

Description

technical field [0001] The invention relates to the technical field of MXene conductive composite materials, in particular to a preparation method and application of a functionalized MXene-based conductive composite material. Background technique [0002] Supercapacitors, as a new type of energy storage device, have excellent properties such as higher energy density, better conductivity, longer cycle life and more environmental friendliness, and electrode materials are the key factors affecting supercapacitors. , the structure of electrode materials plays a crucial role in the performance of supercapacitors. [0003] MXene is a new transition metal carbon / nitride material, a class of two-dimensional inorganic compounds in materials science, which consists of transition metal carbides, nitrides or carbonitrides with a thickness of several atomic layers. It has been reported in 2008 that because MXene materials have hydroxyl groups or terminal oxygens on the surface, they hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/32H01G11/36H01G11/26H01G11/24
CPCH01G11/86H01G11/30H01G11/32H01G11/36H01G11/26H01G11/24Y02E60/10
Inventor 谷雨
Owner 南通市生态环境监控中心(南通市机动车排污监督管理中心)
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