Method for preparing ultra-flexible high-performance sulfur-doped silver selenide/nylon composite thermoelectric thin film

A thermoelectric thin film, high-performance technology, applied in the manufacture/processing of thermoelectric devices, thermoelectric device junction lead-out materials, etc., can solve the problems of poor cost and toxicity, poor flexibility, high thermal conductivity, etc., to reduce cost and toxicity , flexibility and tensile properties, and the effect of low reaction temperature

Pending Publication Date: 2022-04-22
TONGJI UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent has poor flexibility and relatively high thermal conductivity, and at the same time, it is also poor in terms of cost and toxicity

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
  • Method for preparing ultra-flexible high-performance sulfur-doped silver selenide/nylon composite thermoelectric thin film
  • Method for preparing ultra-flexible high-performance sulfur-doped silver selenide/nylon composite thermoelectric thin film
  • Method for preparing ultra-flexible high-performance sulfur-doped silver selenide/nylon composite thermoelectric thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]A method for preparing ultra-flexible high-performance sulfur-doped silver selenide / nylon flexible composite thermoelectric film, the method is 20ml ethylene glycol dispersion (25.7mmol / L) of selenium nanowires, 0.18g silver sulfide (adding amount meets The molar ratio of selenium nanowires to silver sulfide is 0.7), 20ml ethylene glycol is added in the beaker, after stirring at 90°C for 15h, centrifuge at a speed of 3000r / min, extract the black precipitate obtained, and use absolute ethanol at 3000r / min Centrifuge at high speed for 1min to remove impurities. After centrifugation, disperse the carefully cleaned black target product in 45ml of absolute ethanol for 15min and ultrasonically disperse for 15min. Then use nylon filter membrane as the substrate and vacuum filter to obtain the silver-selenium-sulfur ternary alloy Nylon flexible film, the obtained film was placed in a vacuum drying oven and dried at a temperature of 60° C. for 12 hours. After the film is taken ou...

Embodiment 2

[0049] Compared with Example 1, most of them are the same, except that the added amount of sulfur is adjusted so that the molar ratio of selenium nanowires to silver sulfide is 0.5.

Embodiment 3

[0051] Compared with Example 1, most of them are the same, except that the added amount of silver sulfide is adjusted so that the molar ratio of selenium nanowires to silver sulfide is 0.8:1.

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
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for preparing an ultra-flexible high-performance sulfur-doped silver selenide / nylon composite thermoelectric film, which comprises the following steps: (1) taking selenium nanowires to react with silver sulfide powder under the condition of taking ethylene glycol as a solvent to obtain silver-selenium-sulfur ternary alloy powder; and (2) ultrasonically dispersing the silver-selenium-sulfur ternary alloy powder in absolute ethyl alcohol, taking a nylon filter membrane as a substrate, performing vacuum filtration, drying, and performing hot pressing treatment to obtain a target product. Compared with the prior art, the composite film has excellent flexibility and excellent thermoelectric performance, and the film is used for manufacturing a high-output-performance thermoelectric device and is expected to serve as a new power supply source of a wearable electronic device.

Description

technical field [0001] The invention belongs to the technical field of thermoelectric material preparation, and relates to a method for preparing ultra-flexible high-performance sulfur-doped silver selenide / nylon composite thermoelectric film. Background technique [0002] Thermoelectric materials are a class of functional materials that directly realize the mutual conversion between thermal energy and electrical energy through the carrier transport inside the material. Thermoelectric generators and refrigeration devices made of thermoelectric materials have the advantages of simple structure, no moving parts, no wear, no noise, no pollution, and small volume. As an environmentally friendly material, thermoelectric materials have broad application prospects in the field of energy supply. [0003] The general performance index of thermoelectric materials is the dimensionless thermoelectric figure of merit ZT, and its expression is as follows: [0004] ZT = α 2 σT / κ where: ...

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 Applications(China)
IPC IPC(8): H01L35/34H01L35/16H01L35/24
CPCH10N10/856H10N10/852H10N10/01
Inventor 蔡克峰伍苗苗
Owner TONGJI UNIV
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