Vanadium pentoxide (V2O5) material with large specific surface area and preparation method thereof

A technology of vanadium pentoxide and large specific surface area, applied in the field of V2O5 material and its preparation, can solve the problems of decreased electrochemical performance, complicated process and high energy consumption, and achieves the effects of improved material purity, simple process and low energy consumption

Inactive Publication Date: 2012-07-18
NANTONG UNIVERSITY
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are difficult to get V in one step 2 o 5 Porous nanostructures, to get V 2 o 5 Porous nanostructures often have to go through some follow-up processes, such as high-temperature calcination, so they have the disadvantages of complex p

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
  • Vanadium pentoxide (V2O5) material with large specific surface area and preparation method thereof
  • Vanadium pentoxide (V2O5) material with large specific surface area and preparation method thereof
  • Vanadium pentoxide (V2O5) material with large specific surface area and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The method of the present invention is based on the chemical vapor deposition method to carry out the V-V according to the present invention 2 O 5 The specific steps for the synthesis of materials are as follows:

[0027] The first step is to configure the preparation system CVD corresponding to the chemical vapor deposition method before synthesis. see figure 1 , connect the quartz evaporator with a diameter of 10cm to the pipeline 12 of the preparation system through nitrogen, adopt a ring-shaped columnar quartz substrate 8, and clean the substrate 8 with acetone or alcohol, and place the substrate 8 in the furnace tube 3 Corresponding to the side of the air outlet 6, 50-60 cm away from the center of the furnace tube. Then take a certain amount of vanadyl acetylacetonate (VO(acac) 2 ) as a precursor into a quartz boat, and put the quartz boat into the evaporator 11.

[0028] In the second step, the CVD preparation system is sealed, and the furnace tube 3 is evacu...

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 relates to a vanadium pentoxide (V2O5) material with a large specific surface area and a preparation method thereof. The V2O5 material is formed by irregularly cross connecting a plurality of tubular nanometer crystals; a tube wall of each tubular nanometer crystal is formed by mutually connecting single crystal particles; and holes exist among the particles. The preparation method of the material comprises the following steps of: adopting a chemical vapor deposition method; using a CVD (Chemical Vapor Deposition) preparation system; taking vanadyl acetylacetonate (VO (acac) 2) as a raw material; putting into an evaporator; and reacting steam formed by the evaporator with oxygen in carrier gas under a certain temperature to synthesize a V2O5 porous nanometer structure. The advantages are that: the V2O5 material has the large specific surface area, and has good circularity, quick Li ion electrochemical kinetics action and large storage capacity as a Li battery cathode material; and the synthesization process is simple, the purity of the material is high, the yield is large, the energy consumption is low, and the V2O5 material is suitable for being industrially produced in large scale and has good application prospect.

Description

technical field [0001] The present invention relates to related materials such as energy sources, catalysts, sensors, etc., in particular to a V 2 O 5 Materials and methods for their preparation. Background technique [0002] Vanadium oxides are a class of compounds VO, V 2 O 3 , VO 2 , V 2 O 5 , V n O 2n-1 , V 2n O 5n-2 general name. where V 2 O 5 It is the most stable in the vanadium oxide family, because it has a special layered structure, and the interaction force between layers is very weak, which provides a channel for the insertion and precipitation of many organic and inorganic molecules or ions. Aspects such as chemical sensing, catalysis, Li battery cathode materials have a wide range of applications. As a Li battery cathode material, V 2 O 5 The theoretical capacity of up to 294mA h g -1 , higher than LiFePO 4 (170mA h g -1 ), LiCoO 2 (274mA h g -1 ) and LiMnO 2 (285mA h g -1 ), so it is an ideal cathode material for Li batteries. But as a ...

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
IPC IPC(8): C01G31/02B82Y40/00
Inventor 尹海宏章国安宋长青王志亮陈云
Owner NANTONG UNIVERSITY
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