Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of supported monodisperse Ni nanoparticle modified three-dimensional porous V2O3 micron flower

A nanoparticle, three-dimensional porous technology, used in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of limited application, non-ideal electrochemical performance, etc. Ease of use of materials, fast mass transfer and gas desorption, and less equipment

Inactive Publication Date: 2020-09-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But limited by the electronic structure, the single-component V 2 o 3 The electrochemical performance is not ideal, which limits its application

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
  • Preparation method of supported monodisperse Ni nanoparticle modified three-dimensional porous V2O3 micron flower
  • Preparation method of supported monodisperse Ni nanoparticle modified three-dimensional porous V2O3 micron flower
  • Preparation method of supported monodisperse Ni nanoparticle modified three-dimensional porous V2O3 micron flower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Evenly disperse 1mmol nickel chloride hexahydrate and 1mmol ammonium metavanadate in 30mL ultrapure water, transfer to a 50mL reaction kettle, put in foamed nickel (2cm*3cm), tighten the lid of the hydrothermal kettle tightly, and place in an oven at 160 ℃ constant temperature reaction 6h. After the hydrothermal kettle is naturally cooled to room temperature, take out the nickel foam, rinse it with ultrapure water and absolute ethanol, dry it, and place it in a tube furnace at a constant temperature of 400°C in high-purity nitrogen at a heating rate of 2°C / min. After reacting for 2 hours, the tube furnace was cooled to room temperature, and then reacted at a constant temperature of 500 °C for 2 hours in a hydrogen / argon gas mixture to obtain a three-dimensional porous V 2 o 3 micron flower.

Embodiment 2

[0033] Evenly disperse 1mmol nickel chloride hexahydrate and 1mmol ammonium metavanadate in 30mL ultrapure water, transfer to a 50mL reaction kettle, put in foamed nickel (2cm*3cm), tighten the lid of the hydrothermal kettle tightly, and place in an oven at 160 ℃ constant temperature reaction 6h. After the hydrothermal kettle was naturally cooled to room temperature, the nickel foam was taken out, rinsed with ultrapure water and absolute ethanol, dried, and placed in a tube furnace at a heating rate of 2°C / min in a hydrogen / argon mixed gas for 500 ℃ constant temperature reaction for 2 h, the three-dimensional porous V modified with supported monodisperse Ni nanoparticles was obtained 2 o 3 micron flower.

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 discloses a preparation method of a supported monodisperse Ni nanoparticle modified three-dimensional porous V2O3 micron flower. The preparation method includes following steps: dispersing dispersing nickel salt and vanadium salt into ultrapure water, then putting a substrate material into the ultrapure water, carrying out hydrothermal reaction and finally carrying out heat treatment. According to the invention, the phase-separated three-dimensional porous hybrid structure is prepared by utilizing the difference between the reduction capability and the ion migration capability ofmetal ions and adopting a non-template method. The material prepared according to the invention is stable in structure, multiple in nanopores, rich in interface, large in specific surface area, goodin conductivity, rapid in substance transmission and gas bubble desorption, and excellent in electro-catalytic hydrogen evolution and oxygen evolution activity and stability. Meanwhile, the method issimple in raw material, high in operability, easy in condition control and wide in applicability, and has industrial application potential.

Description

【Technical field】 [0001] The invention belongs to the field of energy conversion and storage, in particular to a three-dimensional porous V 2 o 3 Preparation method of micron flowers. 【Background technique】 [0002] The increasing scarcity of fossil energy such as coal, oil, and natural gas, as well as the accompanying pollutants and carbon emissions in the use process, urgently require the development and utilization of clean energy. Therefore, energy conversion and storage has become a major research hotspot today. Due to the variable crystal structure, metallicity at room temperature, and strong electron-electron interactions, V 2 o 3 It has attracted widespread attention in new energy fields such as lithium-ion batteries, supercapacitors, and fuel cells. But limited by the electronic structure, the single-component V 2 o 3 The electrochemical performance is not ideal, which limits its application. With the development of nanotechnology, component regulation and mi...

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): B01J23/847B01J35/10B01J37/10B01J37/08C25B1/04C25B11/06
CPCB01J23/8472B01J37/10B01J37/088C25B1/04B01J35/33B01J35/40B01J35/50B01J35/61Y02E60/36
Inventor 康毅进陈杨饶袁
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA