Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A crystalline tungsten trioxide/titanium doped amorphous tungsten oxide nanowire array and a preparing method thereof

A tungsten oxide nanowire and tungsten trioxide nanotechnology, which is applied in the field of crystalline tungsten trioxide/titanium-doped amorphous tungsten oxide nanowire array and its preparation, can solve the problems of low coloring efficiency, poor cycle stability, and discoloration speed Slow and other problems, to achieve the effect of high coloring efficiency, long cycle life and fast response speed

Active Publication Date: 2018-12-18
HEFEI UNIV OF TECH
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Tungsten trioxide has been widely studied as the most promising inorganic electrochromic material. Compared with other transition metal oxides, it has unique color-changing properties, such as: low price, easy synthesis, low energy consumption, high contrast, It has the advantages of strong bonding with the substrate, but the traditional tungsten trioxide also has the disadvantages of slow discoloration and low coloring efficiency
These significantly enhanced functions provide the impetus for the application of vertically oriented tungsten trioxide nanowire array films as templates to synthesize electrochromic materials, but such ultrafine tungsten oxide nanowires also suffer from the disadvantage of poor cycle stability.

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
  • A crystalline tungsten trioxide/titanium doped amorphous tungsten oxide nanowire array and a preparing method thereof
  • A crystalline tungsten trioxide/titanium doped amorphous tungsten oxide nanowire array and a preparing method thereof
  • A crystalline tungsten trioxide/titanium doped amorphous tungsten oxide nanowire array and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of crystalline tungsten trioxide / titanium doped amorphous tungsten oxide nanowire array, the specific steps are as follows:

[0038] (1) Place the FTO conductive glass in a beaker filled with acetone, ethanol, and deionized water in turn, and ultrasonicate for 30 minutes respectively, and then put it on filter paper and dry it with an infrared lamp;

[0039] (2) Put the FTO conductive glass cleaned in step (1) on the sample stage of the vacuum chamber of the magnetron sputtering coating system, then place the tungsten trioxide target with a purity of 99.99% on the radio frequency sputtering target position, Adjust the distance between the target and the FTO conductive glass to 5cm; vacuumize until the vacuum in the vacuum chamber reaches 2.0*10 -4 When Pa is below, enter 50 sccm of argon gas and 50 sccm of oxygen gas, adjust the pressure of the vacuum chamber to 0.8 Pa, turn on the radio frequency sputtering control system, sputter a layer of tungst...

Embodiment 2

[0046] A preparation method of crystalline tungsten trioxide / titanium doped amorphous tungsten oxide nanowire array, the specific steps are as follows:

[0047] (1) Place the FTO conductive glass in a beaker filled with acetone, ethanol, and deionized water in turn, and ultrasonicate for 30 minutes respectively, and then put it on filter paper and dry it with an infrared lamp;

[0048] (2) Put the FTO conductive glass cleaned in step (1) on the sample stage of the vacuum chamber of the magnetron sputtering coating system, then place the tungsten trioxide target with a purity of 99.99% on the radio frequency sputtering target position, Adjust the distance between the target and the FTO conductive glass to 5cm; vacuumize until the vacuum in the vacuum chamber reaches 2.0*10 -4 When Pa is below, enter 50 sccm of argon gas and 50 sccm of oxygen gas, adjust the pressure of the vacuum chamber to 0.8 Pa, turn on the radio frequency sputtering control system, sputter a layer of tungst...

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

A crystalline tungsten trioxide / titanium doped amorphous tungsten oxide nanowire array is disclosed. The array has a core-shell structure in which crystalline tungsten trioxide nanowires are adopted acore and prepared by a solvent process, and titanium doped amorphous tungsten oxide film is adopted as a shell and prepared by a temperature-variable magnetron sputtering process. The length of the crystalline tungsten trioxide nanowires is 300-1000 nm, and the diameter of the nanowires is 20-50 nn. The crystalline tungsten trioxide nanowires are uniformly covered with the titanium doped amorphous tungsten oxide nanometer shell layer, and the diameter after composition is adjustable in a range of 30-150 nm. The titanium doped tungsten oxide film is uniformly deposited on the tungsten trioxidenanowires through magnetron sputtering to obtain an electrochromic material having a core-shell structure. The structure has excellent electrochromic performance, good stability, high contrast and ahigh conversion speed.

Description

technical field [0001] The invention belongs to the field of material preparation and synthesis, and in particular relates to a crystalline tungsten trioxide / titanium doped amorphous tungsten oxide nanowire array and a preparation method thereof. Background technique [0002] Electrochromism is a kind of optical performance changeable discoloration, which generally refers to the reversible and permanent change of light transmittance and (or) reflectance associated with electrochemical redox reactions after the application of an external electric field or current. The change of the material is intuitively manifested as a process of reversible changes in the color and transparency of the material. Because of its special properties and attractive application prospects, electrochromic materials have quickly become a field of research that researchers are scrambling to study. Electrochromic materials can not only be applied to smart energy-saving windows and information displays...

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): C09K9/00B82Y30/00B82Y40/00C23C14/08C23C14/35C23C18/12
CPCB82Y30/00B82Y40/00C09K9/00C23C14/083C23C14/35C23C18/1216
Inventor 吴玉程汤凯张勇史英迪宋艳斌王岩崔接武舒霞秦永强
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com