Single-phase spinel type high-entropy oxides as well as preparation method and application thereof

A spinel-type and oxide technology, applied in chemical instruments and methods, nickel compounds, cobalt compounds, etc., can solve the limitations of application range, limited composition range, and less exploration in the application field of spinel-type high-entropy oxides To achieve the effect of expanding the range of ingredients, uniform distribution of elements, and fine particle size

Active Publication Date: 2021-02-09
东北大学秦皇岛分校
View PDF13 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition range of spinel-type high-entropy oxides is still very limited at present, and the application fields of spinel-type high-entropy oxides are less explored at home and abroad, and the application range is limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single-phase spinel type high-entropy oxides as well as preparation method and application thereof
  • Single-phase spinel type high-entropy oxides as well as preparation method and application thereof
  • Single-phase spinel type high-entropy oxides as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation (CoCrFeMnNi) 3 o 4 Powder material:

[0033] (1) Weigh Co(NO 3 ) 2 ·6H 2 O, Cr(NO 3 ) 3 9H 2 O, Fe(NO 3 ) 3 9H 2 O, Mn(NO 3 ) 2 4H 2 O, Ni(NO 3 ) 2 ·6H 2 Each 5mmol of 0 five kinds of nitrates; Take glycine 2.5g; Five kinds of nitrates and glycine are dissolved in 10ml deionized water, stir 3h at room temperature, obtain the mixed sol containing five kinds of nitrates;

[0034] (2) Transfer the above mixed sol to a blast drying oven at 90°C for 2 hours to obtain a viscous gel;

[0035] (3) Put the viscous gel into a crucible, place the crucible in a muffle furnace and raise the temperature to 450°C at a rate of 5°C / min, then calcinate for 30min, air cool to room temperature, and grind to obtain the ( CoCrFeMnNi) 3 o 4 Powder material. Such as figure 1 As shown, the XRD spectrum shows that the synthesized (CoCrFeMnNi) 3 o 4 The powder material belongs to the face-centered cubic (fcc) spinel structure and has the Fd-3m(227) space group. ...

Embodiment 2

[0042] Preparation (CrFeMnNiZn) 3 o 4 Powder material:

[0043] (1) Weigh Cr(NO 3 ) 3 9H 2 O, Fe(NO 3 ) 3 9H 2 O, Mn(NO 3 ) 2 4H 2 O, Ni(NO 3 ) 2 ·6H 2 O, Zn(NO 3 ) 2 ·6H 2 Each 5mmol of 0 five kinds of nitrates; Take glycine 2.5g; Five kinds of nitrates and glycine are dissolved in 5ml deionized water, stir 3h at room temperature, obtain the mixed sol that contains five kinds of nitrates;

[0044] (2) Transfer the above mixed sol to a blast drying oven at 70°C for 4 hours to obtain a viscous gel;

[0045] (3) Put the viscous gel into a crucible, place the crucible in a muffle furnace and heat up to 550°C at a heating rate of 5°C / min, then calcinate for 30min, air cool to room temperature, and grind to obtain the ( CrFeMnNiZn) 3 o 4 Powder material. Such as figure 1 As shown, the XRD spectrum shows that the synthesized (CrFeMnNiZn) 3 o 4 The powder material belongs to the face-centered cubic (fcc) spinel structure and has the Fd-3m(227) space group. No ...

Embodiment 3

[0052] Preparation (CoFeMnNiZn) 3 o 4 Powder material:

[0053] (1) Weigh Co(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O, Mn(NO 3 ) 2 4H 2 O, Ni(NO 3 ) 2 ·6H 2 O, Zn(NO 3 ) 2 ·6H 2 Each 5mmol of 0 five kinds of nitrates; Take glycine 2.5g; Five kinds of nitrates and glycine are dissolved in 5ml deionized water, stir 3h at room temperature, obtain the mixed sol that contains five kinds of nitrates;

[0054] (2) Transfer the above mixed sol to a blast drying oven at 80°C for 3 hours to obtain a viscous gel;

[0055] (3) Put the viscous gel into a crucible, place the crucible in a muffle furnace and raise the temperature to 650°C at a rate of 5°C / min, then calcinate for 30min, air cool to room temperature, and grind to obtain the ( CoFeMnNiZn) 3 o 4 Powder material. Such as figure 1 As shown, the XRD spectrum shows that the synthesized (CoFeMnNiZn) 3 o 4 The powder material belongs to the face-centered cubic (fcc) spinel structure and has the Fd-3m(227) space grou...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of high-entropy oxide materials, and particularly relates to a plurality of single-phase spinel type high-entropy oxides as well as a preparation method and application thereof. According to the invention, expansion is carried out on the basis of an existing spinel-type (CoCrFeMnNi)3O4 high-entropy oxide material to prepare the single-phase spinel-typehigh-entropy oxide of a new system, the component range of the spinel-type high-entropy oxide is expanded, the application of the prepared single-phase spinel-type high-entropy oxide of the new systemin the field of electrochromism is discovered and proposed, and the application field of the single-phase spinel type high-entropy oxides are further expanded. According to the invention, the component range of the spinel type high-entropy oxides is expanded; single-phase spinel type high-entropy oxide powder materials prepared by a sol-gel combustion method are high in purity, small in particlesize and uniform in element distribution; a spin-coating method is adopted, so process is simple, and prepared single-phase spinel type high-entropy oxide film materials are good in uniformity; and meanwhile, the application of the single-phase spinel type high-entropy oxides as electrochromic materials is provided, so the application field of the single-phase spinel type high-entropy oxides are further expanded.

Description

technical field [0001] The invention belongs to the technical field of high-entropy oxide materials, and specifically relates to several single-phase spinel-type high-entropy oxides, preparation methods and applications. Background technique: [0002] As a new type of oxide system developed in recent years, high-entropy oxides have broken the design concept of traditional doped oxides. Excellent properties have attracted extensive attention from researchers at home and abroad. High-entropy oxides are easy to form relatively stable solid solution structures such as rock salt type, calcium fluoride type, spinel type or perovskite due to the multi-principal elements and chaotic arrangement of the principal elements, thus showing excellent physical and chemical properties such as Extremely high thermal stability, unique magnetic properties, efficient lithium ion storage properties, huge dielectric properties and excellent catalytic properties have very broad application prospec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00C01G51/00C03C17/34
CPCC01G53/006C01G51/006C03C17/3417C01P2004/03C01P2002/72C03C2218/116C03C2218/322
Inventor 赵艺含李明亚王晓强戴塞飞祝海洋
Owner 东北大学秦皇岛分校
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap