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A kind of highly conductive a-site high-entropy nanometer metal oxide and its preparation method

A nano metal and oxide technology, applied in chemical instruments and methods, vanadium oxide, vanadium compounds, etc., can solve the problem of low conductivity, and achieve the effect of improving electronic conductivity and ionic conductivity

Active Publication Date: 2022-04-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing high-entropy oxides are affected by microstructure design, preparation methods, etc., and their conductivity is low. It is necessary to further improve their conductivity, so that they can be used in more applications that require high conductivity, including for the preparation of Conductive alloys, electrical contact composites, conductive composites, multifunctional bio-based composites, conductive / antistatic functional composite coatings, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Provided is a highly conductive A-site high-entropy nanometer (Gd 0.4 Er 0.3 La 0.4 Nd 0.5 Y 0.4 )(Zr 0.7 ,Sn 0.8 ,V 0.5 )O 7 A method for preparing a metal oxide, comprising the steps of:

[0035] (1) Gd(NO 3 ) 3 , Er(NO 3 ) 3 , La(NO 3 ) 3 , Nd(NO 3 ) 3 , Y(NO 3 ) 3 , ZrOSO 4 , SnCl 4 , NH 4 VO 3 Add to deionized water / absolute ethanol / tetrahydrofuran in the mixed solution whose mass ratio is 0.3:3:0.5, and stir for 5 minutes to obtain mixed solution 1; Gd(NO 3 ) 3 , Er(NO 3 ) 3 , La(NO 3 ) 3 , Nd(NO 3 ) 3 , Y(NO 3 ) 3 , ZrOSO 4 , SnCl 4 , NH 4 VO 3 The mass ratio of the total mass to the mixed solution of deionized water / absolute ethanol / tetrahydrofuran (0.3:3:0.5) was 12.6%.

[0036] (2) Take p-phenylenediamine, hydrogenated tallow primary amine, sorbitol and ethyl carbamoacetate at a mass ratio of 1:0.2:7:0.01, add them to n-propanol, and stir for 1 hour to obtain a mixture of two The ratio of the total mass of p-phenylenediamine...

Embodiment 2

[0048] Provided is a highly conductive A-site high-entropy nanometer (Gd 0.4 Er 0.3 La 0.4 Nd 0.5 Y 0.4 )(Zr 0.7 ,Sn 0.8 ,V 0.5 )O 7 A method for preparing a metal oxide, comprising the steps of:

[0049] (1) Gd(NO 3 ) 3 , Er(NO 3 ) 3 , La(NO 3 ) 3 , Nd(NO 3 ) 3 , Y(NO 3 ) 3 , ZrOSO 4 , SnCl 4 , NH 4 VO 3 Add to deionized water / absolute ethanol / tetrahydrofuran in the mixed solution whose mass ratio is 0.3:3:0.5, and stir for 10 minutes to obtain mixed solution 1; Gd(NO 3 ) 3 , Er(NO 3 ) 3 , La(NO 3 ) 3 , Nd(NO 3 ) 3 , Y(NO 3 ) 3 , ZrOSO 4 , SnCl 4 , NH 4 VO 3 The mass ratio of the total mass to the mixed solution of deionized water / absolute ethanol / tetrahydrofuran (0.3:3:0.5) was 12.6%.

[0050] (2) Take p-phenylenediamine, hydrogenated tallow primary amine, sorbitol and ethyl carbamoacetate at a mass ratio of 3:0.4:9:0.03, add them to n-propanol, and stir for 3 hours to obtain a mixture of two The ratio of the total mass of p-phenylenediami...

Embodiment 3

[0062] Provided is a highly conductive A-site high-entropy nanometer (Gd 0.4 Er 0.3 La 0.4 Nd 0.5 Y 0.4 )(Zr 0.7 ,Sn 0.8 ,V 0.5 )O 7 A method for preparing a metal oxide, comprising the steps of:

[0063] (1) Gd(NO 3 ) 3 , Er(NO 3 ) 3 , La(NO 3 ) 3 , Nd(NO 3 ) 3 , Y(NO 3 ) 3 , ZrOSO 4 , SnCl 4 , NH 4 VO 3 Add to deionized water / absolute ethanol / tetrahydrofuran in the mixed solution whose mass ratio is 0.3:3:0.5, and stir for 15 minutes to obtain mixed solution 1; Gd(NO 3 ) 3 , Er(NO 3 ) 3 , La(NO 3 ) 3 , Nd(NO 3 ) 3 , Y(NO 3 ) 3 , ZrOSO 4 , SnCl 4 , NH 4 VO 3 The mass ratio of the total mass to the mixed solution of deionized water / absolute ethanol / tetrahydrofuran (0.3:3:0.5) was 12.6%.

[0064] (2) Take p-phenylenediamine, hydrogenated tallow primary amine, sorbitol and ethyl carbamoacetate at a mass ratio of 2:0.3:8:0.02, add them to n-propanol, and stir for 2 hours to obtain a mixture of two The ratio of the total mass of p-phenylenediami...

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Abstract

The invention relates to the field of new materials and aims to provide a high-conductivity A-site high-entropy nanometer metal oxide and a preparation method thereof. The molecular formula of the metal oxide is Gd 0.4 Er 0.3 La 0.4 Nd 0.5 Y 0.4 )(Zr 0.7 ,Sn 0.8 ,V 0.5 )O 7 ; Its appearance is in the form of powder, and its microstructure is a square nanosheet with a side length of 4-12nm and a thickness of 1-3nm. Compared with the existing high-entropy oxides, the product of the present invention has the characteristics of high conductivity, and can be used in conductive alloys, electrical contact composite materials, conductive composite materials, multifunctional bio-based composite materials, conductive / antistatic functional composite coatings, etc. be better applied.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a high-conductivity A-site high-entropy nanometer metal oxide (Gd 0.4 Er 0.3 La 0.4 Nd 0.5 Y 0.4 )(Zr 0.7 ,Sn 0.8 ,V 0.5 )O 7 and its preparation method. Background technique [0002] When metal materials are applied to high-voltage breakable connectors, conductive composite materials are often prepared by adding metal oxide reinforcement phases to improve the ability of the metal matrix to resist arc erosion, such as adding SnO to the Ag matrix or Cu matrix 2 In order to prepare conductive metal composite materials with excellent arc erosion resistance and fusion welding resistance. However, the addition of metal oxides also reduces the conductivity of the composite material due to the lack of conductivity of the metal oxide itself, which cannot meet the application requirements in the field of conductivity. [0003] Theoretically, multi-element rare earth metal oxides hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G31/00C01G31/02B82Y40/00B82Y30/00
CPCC01G31/006C01G31/02B82Y30/00B82Y40/00C01P2004/64
Inventor 张玲洁蔡伟炜暴宁钟
Owner ZHEJIANG UNIV
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