A kind of preparation method of flexible self-supporting electrochromic film

An electrochromic, self-supporting technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of device performance impact, poor conductivity of NiO materials, etc., and achieve the effect of improving conductivity, overcoming bonding resistance, and realizing bending deformation

Active Publication Date: 2021-07-13
珠海航湾科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of the poor conductivity of NiO material in the existing nickel-based flexible electrochromic electrode and the influence of the traditional flexible conductive substrate and electrode material on the performance of the device, and provides a flexible self-supporting electrochromic film. Preparation

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 kind of preparation method of flexible self-supporting electrochromic film
  • A kind of preparation method of flexible self-supporting electrochromic film
  • A kind of preparation method of flexible self-supporting electrochromic film

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0024] Embodiment 1: This embodiment is a method for preparing a flexible self-supporting electrochromic film, which is specifically carried out according to the following steps:

[0025] 1. Clean the encapsulation layer and the conductive layer: ultrasonically clean the PET film and the PET-ITO film respectively, and then vacuum-dry them at 60°C to 70°C; Ultrasound for 10min to 12min each;

[0026] 2. Preparation of nickel hydroxide dispersion: Mix nickel nitrate, sodium dodecylbenzenesulfonate and hexamethylenetetramine in deionized water, stir for 1h to 1.5h, then transfer to polytetrafluoroethylene hydrothermal In the kettle, react for 24 hours under the condition of hydrothermal reaction temperature of 95°C to 97°C, and naturally cool to room temperature to obtain dodecyl-intercalated nickel hydroxide, and the dodecyl-intercalated nickel hydroxide is respectively Wash three times each with deionized water and absolute ethanol, dry at room temperature, strip the dried dod...

specific Embodiment approach 2

[0033]Specific embodiment two: what this embodiment is different from specific embodiment one is: the nickel hydroxide of the dodecyl intercalation layer after stripping the dodecyl intercalation after the water bath method described in the step 2 with formamide as the stripping solvent is according to the following steps Carried out: Add the dried dodecyl-intercalated nickel hydroxide to formamide, and put it in a water bath at 40°C for 96h; the quality of the dried dodecyl-intercalated nickel hydroxide is the same as that of formamide The volume ratio is 5mg:4mL. Others are the same as the first embodiment.

specific Embodiment approach 3

[0034] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the improved Hummers method described in step 3 is used to prepare graphene oxide according to the following steps: the concentrated sulfuric acid of 8mL is added to the Erlenmeyer flask Heating to 80°C, adding 1.7g of potassium persulfate and 1.7g of phosphorus pentoxide to dissolve, adding 2g of graphite powder and continuing the reaction at 80°C for 4.5h, cooling to room temperature, adding 100mL of deionized water, and standing 12h, filter and wash, and dry at room temperature; add the dried product into a beaker, add 50mL of concentrated sulfuric acid and stir, add 12g of potassium permanganate under ice bath conditions and continue stirring for 2h under ice bath conditions, heat to 35°C, stop heating and continue stirring for 2h, add 100mL of deionized water and continue stirring for 2h, continue to add 400mL of deionized water, drop in 5mL of hydrogen perox...

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

PropertyMeasurementUnit
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing a flexible self-supporting electrochromic film, and relates to a method for preparing an electrochromic film. The invention aims to solve the technical problems that the conductivity of NiO material in the existing nickel-based flexible electrochromic electrode is poor and the combination of the traditional flexible conductive substrate and the electrode material affects the performance of the device. The present invention: 1. cleaning the packaging layer and the conductive layer; 2. preparing the nickel hydroxide dispersion; 3. preparing the graphene oxide dispersion; 4. mixing and doping the graphene oxide; 5. calcining the composite film; 6. preparing PVA / KOH gel electrolyte; 7. Assembly composite membrane; 8. Encapsulation. The invention realizes electrochromism, and realizes flexible self-supporting characteristics by reassembly of two-dimensional materials, overcomes the combined resistance of electrode materials and conductive substrates, and improves the conductivity of nickel oxide through modification and doping of graphene oxide.

Description

technical field [0001] The invention relates to a preparation method of an electrochromic thin film. Background technique [0002] With the development of society, basic electrochemical properties such as electrochromic optical properties have become a research hotspot for scientists from all over the world. Constructing flexible, lightweight, and wearable smart electrochromics has broad application prospects in the fields of smart windows and smart displays. As we all know, electrode materials are the key to determining flexible smart devices. At present, the electrodes of flexible electrochromic supercapacitors generally use metal oxides, carbon materials (carbon nanotubes, graphene, etc.), conductive polymers and other materials as transparent conductive layers. Inorganic color-changing materials (WO 3 、MoO 3 、TiO 2 , V 2 O, IrO, NiO, etc.) or conductive polymers with color-changing ability (polyanilines, polythiophenes, polypyrroles, etc.) as the active material lay...

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 Patents(China)
IPC IPC(8): G02F1/153
CPCG02F1/1533
Inventor 赵九蓬薛俊莹李垚
Owner 珠海航湾科技有限公司
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