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Flexible thermoelectric nanofiber thin film and preparation and application thereof

A nanofiber and film technology, applied in flexible thermoelectric nanofiber films and their preparation and application fields, can solve the problems of flexibility and poor mechanical properties of thermoelectric films, achieve excellent thermoelectric performance, increase phonon scattering, and increase electron transfer channels. Effect

Active Publication Date: 2019-02-01
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a flexible thermoelectric nanofiber film and its preparation and application, to overcome the defects of thermoelectric film flexibility and poor mechanical properties in the prior art, and the invention provides a flexible thermoelectric nanofiber film Its preparation and application can simultaneously improve the mechanical properties and thermoelectric properties of flexible thermoelectric films, greatly improve the processability and practicability of thermoelectric films, and have good application and development prospects in the field of wearable thermoelectric devices

Method used

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  • Flexible thermoelectric nanofiber thin film and preparation and application thereof
  • Flexible thermoelectric nanofiber thin film and preparation and application thereof
  • Flexible thermoelectric nanofiber thin film and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation of PEDOT:PSS-based nanofiber film: 1) Weigh 1g of PVA (polymerization degree: 2600 degree of alcoholysis: 97-98.8) and 18.05g of PEDOT:PSS solution and magnetically stir for 4h at 95°C , after cooling to room temperature, 0.95g DMSO was added for magnetic stirring for 2h, and finally 20g spinning solution was prepared. Wherein the mass ratio of PEDOT:PSS and DMSO is 95:5, and the PVA content in the spinning solution is 5wt%. The above PEDOT:PSS solution is an aqueous solution with a solid content of 1.3wt%, and the conductivity is 1S / cm.

[0038]2) Prepare the above-mentioned spinning solution by electrospinning into a PEDOT:PSS-based nanofiber film. The electrospinning conditions are as follows: the spinning voltage is 23kV, the spinning rate is 0.4mL / h, and the silicone oil-coated paper is used. The drum is received, the receiving distance is 90mm, and the drum speed is 100rpm.

[0039] (2.) The nanofiber film obtained above was first annealed at 160...

Embodiment 2

[0043] (1) Preparation of PEDOT:PSS-based nanofiber film: 1) Weigh 1g of PVA (polymerization degree: 2600 degree of alcoholysis: 97-98.8) and 18.05g of PEDOT:PSS solution and magnetically stir for 4h at 95°C , after cooling to room temperature, 0.95g DMSO was added for magnetic stirring for 2h, and finally 20g spinning solution was prepared. Wherein the mass ratio of PEDOT:PSS and DMSO is 95:5, and the PVA content in the spinning solution is 5wt%. The above-mentioned PEDOT:PSS solution is an aqueous solution with a solid content of 1.3wt%, and the conductivity is 1S / cm.

[0044] 2) Prepare the above-mentioned spinning solution by electrospinning into a PEDOT:PSS-based nanofiber film. The electrospinning conditions are as follows: the spinning voltage is 23kV, the spinning rate is 0.4mL / h, and the silicone oil-coated paper is used. The drum is received, the receiving distance is 90mm, and the drum speed is 100rpm.

[0045] (2.) The nanofiber film obtained above was first anne...

Embodiment 3

[0049] (1) Preparation of PEDOT:PSS-based nanofiber film: 1) Weigh 1g of PVA (polymerization degree: 2600 degree of alcoholysis: 97-98.8) and 18.05g of PEDOT:PSS solution and magnetically stir for 4h at 95°C , after cooling to room temperature, 0.95g DMSO was added for magnetic stirring for 2h, and finally 20g spinning solution was prepared. Wherein the mass ratio of PEDOT:PSS and DMSO is 95:5, and the PVA content in the spinning solution is 5wt%. The above-mentioned PEDOT:PSS solution is an aqueous solution with a solid content of 1.3wt%, and the conductivity is 1S / cm.

[0050] 2) Prepare the above-mentioned spinning solution by electrospinning into a PEDOT:PSS-based nanofiber film. The electrospinning conditions are as follows: the spinning voltage is 23kV, the spinning rate is 0.4mL / h, and the silicone oil-coated paper is used. The drum is received, the receiving distance is 90mm, and the drum speed is 100rpm.

[0051] (2.) The nanofiber film obtained above was first anne...

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Abstract

The invention relates to a flexible thermoelectric nanofiber thin film and preparation and an application thereof, wherein the flexible thermoelectric nanofiber thin film is a PEDOT:PSS-based nanofiber thin film having the surface coated with silver nanoparticles. The preparation includes the steps: the PEDOT:PSS-based nanofiber thin film is obtained by an electrostatic spinning technology; the nanofiber thin film is annealed and then impregnated in a PEDOT:PSS solution, the excess solution on the surface is washed away, and then drying is performed; and the surface of the nanofibers is coatedwith silver nanoparticles by in situ synthesis. The thin film not only has good thermoelectric properties, but also has good mechanical properties and flexibility, and is easily processed into flexible thermoelectric devices. The method provides a new way for preparing the flexible thermoelectric thin film, and has important significance for development of the flexible thermoelectric devices.

Description

technical field [0001] The invention belongs to the field of flexible thermoelectric materials and their preparation and application, in particular to a flexible thermoelectric nanofiber film and its preparation and application. Background technique [0002] In recent years, wearable electronic devices have developed vigorously and are mainly used in two major fields: firstly, in the application of normal people's health care, smart wearable devices represented by sports bracelets have already entered the public life; in addition Wearable electronic devices are also widely used in the field of medical treatment of patients. Medical-grade wearable devices can be used to detect blood pressure, heart rate, etc. However, ordinary electronic devices have many problems such as short battery life and repeated charging, which seriously affect the user experience. Therefore, the field of sustainable energy collection and supply technology has received more and more attention. An ide...

Claims

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Application Information

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IPC IPC(8): D06M11/83D01F6/94D06M101/30
CPCD01F6/94D06M11/83D06M2101/30
Inventor 王连军金胜男孙婷婷杨建平范宇驰罗维江莞
Owner DONGHUA UNIV
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