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Composite material of sub-group metals compounded with MXenes and preparation method and application of composite material

A metal composite and composite material technology, applied in the field of MXenes composite materials, to achieve the effect of broadening the application range, low reaction temperature and reducing weight

Active Publication Date: 2018-11-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there are few reports on the research on subgroup metal composite MXenes
The precursors currently used are generally MAX phase precursors with Al at the A site, and the A site of the MAX phase is generally chemically etched by a solution containing F, and the obtained MXenes contain F functional groups, while the A site of the MAX phase precursor MXenes composites containing Si without fluorine functional groups have not been reported. Therefore, it is very important to combine MXenes materials without F functional groups through subgroup metal elements in exploring new structures and properties of MXenes materials and expanding their applications. significance

Method used

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  • Composite material of sub-group metals compounded with MXenes and preparation method and application of composite material
  • Composite material of sub-group metals compounded with MXenes and preparation method and application of composite material
  • Composite material of sub-group metals compounded with MXenes and preparation method and application of composite material

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Experimental program
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Effect test

Embodiment 1

[0060] In this embodiment, the composite material of subgroup metal composite MXenes is composed of metal Cu and Ti 3 C 2 Composition, Cu particles coated in situ on Ti 3 C 2 Surface and interlayer, whose chemical formula is Cu-Ti 3 C 2 , the Cu-Ti 3 C 2 The concrete preparation method of composite material is as follows:

[0061] (1) According to the precursor M n+1 AX n The molar ratio of phase material, subgroup metal salt and inorganic salt is 1:1.5:4 to weigh 1gTi 3 SiC 2 Powder, 2.1g CuCl 2 powder, 1.2g NaCl powder and 1.55g KCl powder, grind them for 5min and put them into an alumina crucible;

[0062] (2) Put the uniformly mixed composite powder into the crucible, and react at 800°C for 1 hour under an inert atmosphere; after the reaction is completed, take out the reactant from the crucible;

[0063] (3) Wash the reaction product with deionized water: put the reaction product in a beaker, add deionized water, stir and ultrasonically clean for 10 minutes, t...

Embodiment 2

[0067] In this embodiment, the composite material of subgroup metal composite MXenes is made of metal Ag and Ti 3 C 2 Composition, Ag particles coated in situ on Ti 3 C 2 Surface and interlayer, whose chemical expression is Ag-Ti 3 C 2 , the Ag-Ti 3 C 2 The concrete preparation method of composite material is as follows:

[0068] (1) According to the precursor M n+1 AX n The molar ratio of phase material, subgroup metal salt and inorganic salt is 1:6:0, and 1gTi is weighed 3 AlC 2 powder and 4.5gAgCl powder, grind them for 60min and mix them evenly, then put them into an alumina crucible;

[0069] (2) Put the uniformly mixed composite powder into the crucible, and react at 300°C for 48 hours under an inert atmosphere; after the reaction is completed, take out the reactant from the crucible;

[0070] (3) Wash the reaction product with deionized water: put the reaction product in a beaker, add deionized water, stir and ultrasonically clean for 10 minutes, then let sta...

Embodiment 3

[0073] In this embodiment, the composite material of subgroup metal composite MXenes is composed of metal Fe and Ti 3 C 2 Composition, Fe particles coated in situ on Ti 3 C 2 Surface and interlayer, whose chemical formula is Fe-Ti 3 C 2 , the Fe-Ti 3 C 2 The concrete preparation method of composite material is as follows:

[0074] (1) According to the precursor M n+1 AX n The molar ratio of phase material, subgroup metal salt and inorganic salt is 1:3:1.5 to weigh 1gTi 3 SiC 2 Powder, 2.1g FeCl 2 powder, 0.45g NaCl powder and 0.57g KCl powder, grind them for 50min and put them into an alumina crucible;

[0075] (2) Put the uniformly mixed composite powder into the crucible, and react at 500°C for 7 hours under an inert atmosphere; after the reaction is completed, take out the reactant from the crucible;

[0076] (3) Wash the reaction product with deionized water: put the reaction product in a beaker, add deionized water, stir and ultrasonically clean for 10 minutes, ...

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Abstract

The invention discloses a composite material of sub-group metals compounded with MXenes and a preparation method of the composite material. The composite material of sub-group metals compounded with MXenes is prepared from MXenes materials and sub-group metals, wherein the surfaces of the MXenes materials are coated with the sub-group metals in situ, and the sub-group metals are also distributed among layers of the MXenes materials. The preparation method comprises the following steps: grinding precursor Mn+1AXn-phase materials, sub-group metal salts and inorganic salts for 5-60min by adoptinga molten salt method, enabling the obtained mixture to react for 1-48h at 300-800 DEG C in inert atmosphere, and then, performing post-treatment to obtain the composite material of the sub-group metals compounded with the MXenes. The composite material disclosed by the invention has the advantages of adjustable and uniform components, low cost, environmental protection, high efficiency and the like, and has application prospects in the fields of electrode materials for electrochemical energy storage, wave absorption materials, electromagnetic shielding materials, catalysts and the like.

Description

technical field [0001] The invention relates to the technical field of MXenes composite materials, in particular to a composite material of subgroup metal composite MXenes, its preparation method and application. Background technique [0002] Two-dimensional (2D) materials, which are crystalline materials with a high aspect ratio and a thickness of several atomic layers, such as graphene, MoS 2 , hexagonal boron nitride, transition metal oxides, and clays have aroused great interest among scientists due to their unique physical and chemical properties. Naguib reported a new two-dimensional transition metal carbide and carbonitride in 2011, named MXenes because of its similar structure to graphene. MXenes are a new type of two-dimensional transition metal carbides and / or carbonitrides, by chemically etching the MAX phase (where M represents a transition metal, such as Sc, Ti, V, Cr, Mn, Ta, Nb, etc., and A is 13 Elements in group -16, such as Al, Si, Ge, Sn, Ga, X represent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921B01J23/72B01J23/50B01J23/745B01J23/755B01J23/75B01J23/06B01J23/847B01J35/02B22F9/20
CPCC01B32/921B01J23/06B01J23/50B01J23/72B01J23/745B01J23/75B01J23/755B01J23/8472B22F9/20C01P2002/72C01P2004/03C01P2006/42B01J35/50
Inventor 黄庆李友兵李勉周小兵罗侃都时禹
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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