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Vanadium-based porous single crystal material, and preparation method and application thereof

A single crystal material, vanadium-based technology, applied in the direction of polycrystalline material growth, single crystal growth, single crystal growth, etc., can solve the problems of complicated porous crystal material methods, unfavorable large-scale production and application, etc.

Active Publication Date: 2021-05-18
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the purpose of this application is to solve the problem that the existing methods for preparing porous crystal materials are complicated and unfavorable for large-scale production and application; Single crystal material, thus greatly improving the performance of vanadium-based devices

Method used

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  • Vanadium-based porous single crystal material, and preparation method and application thereof
  • Vanadium-based porous single crystal material, and preparation method and application thereof
  • Vanadium-based porous single crystal material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Example 1 Sample 1 # preparation of

[0102] NH with a size of 5 μm 4 V 3 o 8 The precursor of single crystal powder particles is placed in a high-purity alumina boat, then put into an alumina tube reactor, and 0.01SLM of hydrogen gas and 0.4SLM of argon gas are introduced, and the system is heated to 573K, and the system pressure is maintained at 760Torr. After reacting for 3 hours, cool to room temperature to obtain a sample of porous hexavanadium trioxide single crystal particles, which is designated as sample 1 # .

Embodiment 2

[0103] Example 2 Sample 2 # preparation of

[0104] NH with a size of 5 μm 4 V 3 o 8 The precursor of single crystal powder particles is placed in a high-purity alumina boat, then placed in an alumina tube reactor, and 0.01SLM of hydrogen gas and 0.4SLM of argon gas are introduced, and the system is heated to 673K, and the system pressure is kept at 350Torr. After reacting for 3 hours, cool to room temperature, namely the sample of porous vanadium dioxide single crystal particle, denoted as sample 2 # .

Embodiment 3

[0105] Example 3 Sample 3 # preparation of

[0106] NH with a size of 5 μm 4 V 3 o 8 The precursor of single crystal powder particles is placed in a high-purity alumina boat, and then placed in an alumina tube reactor, and hydrogen gas is passed through 0.1SLM, and the system is heated to 773K, and the system pressure is kept at 350Torr. After 3 hours of reaction, Cool to room temperature, that is, the porous vanadium trioxide single crystal particle sample, denoted as sample 3 # .

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Abstract

The invention discloses a vanadium-based porous single crystal material, and a preparation method and application thereof, and belongs to the technical field of inorganic materials. The vanadium-based porous single-crystal material is porous vanadium oxide single-crystal particles or porous vanadium nitride single-crystal particles, and the particle size of the vanadium-based porous single-crystal material is 50 nm - 500 [mu]m. Vanadium oxide single crystals or vanadate single crystals with different sizes are subjected to reduction conversion growth or oxidation conversion growth to form porous vanadium oxide single crystals with different sizes, or porous vanadium nitride single crystals are subjected to nitridation conversion growth, so that vanadium-based porous single crystal materials with low cost, different sizes, different oxygen coordination and different nitrogen coordination are developed in a new way; and the material has potential application prospects in the fields of photoelectric conversion, catalysis, electro-catalysis, electrochemical energy storage systems and the like. The preparation method provided by the invention is simple to operate and good in repeatability.

Description

technical field [0001] The present application relates to the technical field of inorganic materials, in particular to a vanadium-based porous single crystal material and its preparation method and application. Background technique [0002] Vanadium is a multivalent metal element, such as V(II), V(III), V(IV), V(V), etc., which can form a variety of vanadium-based compounds. The presence of variable valence states and coordination polyhedra makes vanadium-based compounds have an open structure, which facilitates the insertion and extraction of ions or groups. In addition, vanadium-based materials have the characteristics of abundant reserves, light and thin texture, low price, easy processing, high thermal conductivity, electrical conductivity, and high specific capacity. They have great research and application prospects in various fields and have been widely used in electrolyzed water, supercapacitors, Lithium-ion batteries and industrial catalysis, etc. [0003] Porous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/16C30B29/38C30B29/60C30B1/10B01J23/22B01J27/24B01J35/10C07C201/12C07C205/19
CPCC30B29/16C30B29/38C30B29/60C30B1/10B01J23/22B01J27/24C07C201/12B01J35/39B01J35/33B01J35/60C07C205/19
Inventor 谢奎许靖
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI