Flexible transparent conductive oxide nanofiber membrane and preparation method thereof

A transparent conductive, nanofiber technology, applied in the direction of fiber chemical characteristics, fabric surface trimming, heating/cooling fabric, etc., can solve the problems of difficult to meet actual requirements, unfavorable flexible substrate coating, low conductivity of conductive film, etc. Visible light transmittance, low cost, high repeatability

Inactive Publication Date: 2014-07-16

BEIHANG UNIV

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AI-Extracted Technical Summary

Problems solved by technology

The sol-gel method does not require expensive vacuum equipment, the cost is low, and the operation is simple, but the sol-gel method requires the use of toxic organic solvents and pretreatment at 150-300 ° C, whi...

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Abstract

The invention belongs to the technical field of photoelectric functional nano-materials, and particularly relates to a flexible transparent conductive oxide nanofiber membrane and a preparation method thereof. A precursor is composed of salt of a metallic oxide, salt of a doped element, an adhesive and a solvent, the precursor is sprayed on a substrate through electrospining equipment, and then high-temperature calcination is carried out to obtain the flexible transparent conductive oxide nanofiber membrane. The flexible transparent conductive oxide nanofiber membrane prepared with the method has flexibility, high conductivity and high visible-light permeability; no flexible substrate material is needed, and use of the flexible transparent conductive oxide nanofiber membrane is facilitated; the flexible transparent conductive oxide nanofiber membrane prepared with the electrostatic spinning method is controllable in size, high in repeatability, simple in process, high in efficiency and low in cost, and industrial preparation can be achieved.

Application Domain

Heating/cooling textile fabricsMonocomponent synthetic polymer artificial filament +1

Technology Topic

SolventChemistry +9

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Examples

Experimental program(8)

Example Embodiment

[0025] Embodiment 1: Preparation of flexible transparent conductive oxide film.

[0026] The metal salt used in this example is tin tetrachloride pentahydrate, the salt of the doping element is antimony trichloride, the binder is polyvinylpyrrolidone (PVP), and the solvent is N,N-dimethylformamide (DMF ) and isopropanol mixture.

[0027] 1) At room temperature, mix 1.865g tin tetrachloride pentahydrate and 0.135g antimony trichloride in 7g DMF and isopropanol mixture, wherein the mass ratio of DMF and isopropanol solution is 2:1, and keep stirring . Then add 1 g of high molecular polymer PVP as a binder, and continue to stir to form a precursor with a certain viscosity for later use. Wherein, the molar ratio of antimony trichloride and tin tetrachloride pentahydrate is 1:9, and the mass ratio of the total mass of antimony trichloride and tin tetrachloride pentahydrate to the binder PVP is 2:1, and the bonding Agent PVP: The total mass ratio of solvent DMF and isopropanol is 1:7.

[0028] 2) Spray the precursor solution in step 1) directly onto the wire mesh through the electrospinning equipment, where the operating voltage of the electrospinning equipment is 20KV, the distance from the spinneret to the substrate is 20cm, and the electrospinning process is The material speed is 0.1ml/h, and the electrospinning time of the electrospinning is 20min to form nanofibers;

[0029] 3) Peel off the nanofibers in step 2) from the wire mesh, place them in a temperature-programmed muffle furnace, and in an air atmosphere, the heating rate is 3°C/min, the temperature is raised to 600°C, and the calcination time is 3 hours to obtain a flexible Transparent conductive oxide fiber film;

[0030] The diameter of the flexible transparent conductive oxide fiber membrane obtained in this embodiment is 120 nanometers, and the transmittance of visible light in the range of 300 nm to 800 nm reaches 80%.

Example Embodiment

[0031] Embodiment 2: Preparation of flexible transparent conductive oxide film.

[0032] The metal salt used in this embodiment is tin tetrachloride pentahydrate, the salt of the doping element is cobalt chloride (hydrated), the binder is polyethylene glycol, and the solvent is secondary deionized water.

[0033] 1) At room temperature, mix 1.865g of tin tetrachloride pentahydrate and 0.061g of cobalt chloride (hydrated) in 6.8g of secondary deionized water, and keep stirring. Then add 1.2g of polyethylene glycol as a binder and continue stirring to form a precursor with a certain viscosity for later use. Among them, the molar ratio of cobalt chloride (hydrated) to tin tetrachloride pentahydrate is 1:20, and the mass ratio of the total mass of cobalt chloride (hydrated) to tin tetrachloride pentahydrate to the binder polyethylene glycol The mass ratio of the binder polyethylene glycol: solvent secondary deionized water is 1:5.7.

[0034] 2) Spray the precursor solution in step 1) directly onto the wire mesh through the electrospinning equipment, where the operating voltage of the electrospinning equipment is 25KV, the distance from the spinneret to the substrate is 25cm, and the electrospinning process is The material speed is 0.2ml/h, and the electrospinning time of the electrospinning is 10min to form nanofibers;

[0035] 3) Peel off the nanofibers in step 2) from the wire mesh, place them in a temperature-controlled muffle furnace, and in an air atmosphere, the heating rate is 4°C/min, the temperature is raised to 700°C, and the calcination time is 4 hours to obtain a flexible Transparent conductive oxide fiber film;

[0036]The diameter of the flexible transparent conductive oxide fiber membrane obtained in this embodiment is 150 nanometers, and the transmittance of visible light in the range of 300 nm to 800 nm reaches 82%.

Example Embodiment

[0037] Embodiment 3: Preparation of flexible transparent conductive oxide film.

[0038] The metal salt used in this embodiment is zinc chloride, the salt of the doping element is aluminum trichloride, the binder is polyvinylpyrrolidone (PVP), and the solvent is ethanol and secondary deionized water.

[0039] 1) At room temperature, mix 1.363g of zinc chloride and 0.222g of aluminum trichloride in 6.83g of ethanol and secondary deionized water, wherein the mass ratio of ethanol and secondary deionized water is 1:1, and keep stirring. Then add 1.585g high molecular polymer PVP as a binder, and continue to stir to form a precursor with a certain viscosity for later use. Wherein, the molar ratio of aluminum trichloride and zinc chloride is 1:16.7, the mass ratio of aluminum trichloride and zinc chloride total mass and adhesive PVP is 1:1, adhesive PVP: solvent ethanol and The total mass ratio of secondary deionized water is 1:4.3.

[0040] 2) Spray the precursor solution in step 1) directly onto the wire mesh through the electrospinning equipment, where the operating voltage of the electrospinning equipment is 10KV, the distance from the spinneret to the substrate is 12cm, and the electrospinning process is The material speed is 0.5ml/h, and the electrospinning time of the electrospinning is 3min to form nanofibers;

[0041] 3) Peel off the nanofibers in step 2) from the wire mesh, place them in a temperature-programmed muffle furnace, and raise the temperature to 800°C at a heating rate of 6°C/min in an air atmosphere for 3 hours to obtain a flexible Transparent conductive oxide fiber film;

[0042] The diameter of the flexible transparent conductive oxide fiber membrane obtained in this embodiment is 140 nm, and the transmittance of visible light in the range of 300 nm to 800 nm reaches 85%.

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PUM

Property	Measurement	Unit
Size	80.0 ~ 200.0	nm
Wavelength	300.0 ~ 800.0	nm
Diameter	120.0	nm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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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

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Classification and recommendation of technical efficacy words

High visible light transmittance
Improve conductivity

Flexible transparent conductive oxide nanofiber membrane and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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