Check patentability & draft patents in minutes with Patsnap Eureka AI!

Nanofiber membrane based color-changing gel type chromotropic device and preparation method and application thereof

A nanofiber film and color-changing device technology, which is applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems of liquid electrolyte packaging difficulties and easy leakage, and achieve the effect of improving electrochromic performance, good performance, and overcoming packaging difficulties

Active Publication Date: 2019-04-30
DONGHUA UNIV
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a nanofiber film-based color-changing gel-type color-changing device and its preparation and application, which can not only overcome the defects of difficult liquid electrolyte packaging and easy leakage in the assembly of electrochromic devices, but also further simplify the The structure and process of electrochromic devices have good electrochromic performance, and have broad application prospects in the fields of electrochromic smart windows, smart wearables, and flexible displays.

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
  • Nanofiber membrane based color-changing gel type chromotropic device and preparation method and application thereof
  • Nanofiber membrane based color-changing gel type chromotropic device and preparation method and application thereof
  • Nanofiber membrane based color-changing gel type chromotropic device and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Dissolve 3g of P(vdf-hfp) with a molecular weight of 400,000 in a mixed solution of 20mL DMF and 10mL acetone, and disperse it ultrasonically to obtain an electrospinning solution; put the solution into a propeller, set the electric field voltage to 18kv, spin The filament distance was 12cm, the spinning speed was 1mL / h, and the spinning time was 12h, and a uniform white P(vdf-hfp) nanofiber membrane was obtained.

[0034] (2) Dissolve 158 mg of EtVio and 78 mg of ferrocene in a mixed solution of 4 mL of [Emim][TFSI], 12 mL of EC and 12 mL of DMC to obtain a color-changing solution.

[0035] (3) The P(vdf-hfp) nanofiber membrane obtained in step (1) was vacuum-dried at 65° C. for 12 hours, and then immersed in the color-changing solution obtained in step (2) for 20 minutes to obtain a color-changing gel. Paste the color-changing gel between two ITO conductive films, and seal the surroundings with UV-curable glue to obtain a color-changing device.

[0036] The scann...

Embodiment 2

[0043] (1) Dissolve 3.2g of P(vdf-hfp) with a molecular weight of 700,000 in a mixed solution of 30mL DMF and 10mL acetone, and ultrasonically disperse to obtain an electrospinning solution; put the obtained solution into a propeller and set the electric field voltage to 22kv , a spinning distance of 5 cm, a spinning speed of 0.1 mL / h, and a spinning time of 20 h, a uniform white P(vdf-hfp) nanofiber membrane was obtained.

[0044] (2) Dissolve 413mg EtVio and 203mg ferrocene in a mixed solution of 5mL [Emim][TFSI], 25mLEC and 25mL DMC to obtain a color-changing solution.

[0045] (3) The P(vdf-hfp) nanofiber membrane obtained in step (1) was vacuum-dried at 45°C for 24 hours, and then immersed in the color-changing solution obtained in step (2) for 30 minutes to obtain a color-changing gel. The color-changing gel is pasted between two pieces of FTO conductive glass, and the surrounding is sealed with ultraviolet curing glue to obtain a color-changing device.

[0046] The P(v...

Embodiment 3

[0049] (1) Dissolve 3g of P(vdf-hfp) with a molecular weight of 150,000 in a mixed solution of 15mL DMF and 15mL acetone, and disperse it ultrasonically to obtain an electrospinning solution; put the resulting solution into a propeller, set the electric field voltage to 5kv, The spinning distance was 20cm, the spinning speed was 2mL / h, and the spinning time was 5h, and a uniform white P(vdf-hfp) nanofiber membrane was obtained.

[0050] (2) Dissolve 114mg EtVio and 57mg ferrocene in a mixed solution of 10mL [Emim][TFSI], 10mLEC and 10mL DMC to obtain a color-changing solution.

[0051] (3) The P(vdf-hfp) nanofiber membrane obtained in step (1) was vacuum-dried at 80° C. for 8 hours, and then immersed in the color-changing solution obtained in step (2) for 10 minutes to obtain a color-changing gel. The color-changing gel is pasted between two pieces of ITO conductive glass, and the surrounding is sealed with ultraviolet curing glue to obtain a color-changing device.

[0052] T...

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
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a nanofiber membrane based color-changing gel type chromotropic device and a preparation method and an application thereof. The nanofiber membrane based color-changing gel type chromotropic device is composed of P(vdf-hfp) nanofiber membrane based color-changing gel and two conductive substrates. The preparation method comprises the steps of preparing a P(vdf-hfp) nanofiber membrane by adopting electrostatic spinning; dipping the P(vdf-hfp) nanofiber membrane into a color-changing solution to obtain color-changing gel; attaching the color-changing gel between the two conductive substrates to obtain the nanofiber membrane based color-changing gel type chromotropic device. The electrochromic device of the invention not only can overcome the defects such as difficultpackaging and easy leakage of a liquid electrolyte in electrochromic device assembly, but also further simplifies the structure and process of the electrochromic device, is good in electrochromic performance and has wide application prospects in the fields such as electrochromic intelligent windows, intelligent wearable equipment and flexible display.

Description

technical field [0001] The invention belongs to the technical field of electrochromic devices, in particular to a nanofiber film-based color-changing gel type color-changing device and its preparation and application. Background technique [0002] Electrochromism refers to the phenomenon of reversible color transformation of substances caused by an external electric field or electric current. People take advantage of this phenomenon to assemble electrochromic materials, ion transport media and conductive substrates layer by layer to construct electrochromic devices. However, in the assembly of electrochromic devices, liquid electrolytes are used as ion transport media, which often have disadvantages such as difficult packaging and easy leakage. To overcome the above problems, blending polymers as thickeners with liquid electrolytes to prepare gel electrolytes is a solution. However, the molecular chains of the polymer are disentangled in a good solvent, which can adsorb th...

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): G02F1/1516
CPCG02F1/15
Inventor 王宏志白智元李耀刚侯成义张青红
Owner DONGHUA UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com