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Method for preparing high-performance polypyrrole/silver selenide/nylon flexible composite thermoelectric thin film

A technology of thermoelectric thin film and silver selenide, which is applied in the manufacture/processing of thermoelectric devices, and the materials of thermoelectric device junction leads, etc., can solve the problems of non-flexibility and limit the application of flexible thermoelectric materials, and achieve the optimization of flexibility and enhancement of phonons Scattering, conductivity enhancement effect

Pending Publication Date: 2022-02-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the silver selenide materials currently prepared are inflexible, which limits their application in flexible thermoelectric materials.

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for preparing high-performance silver selenide / polypyrrole / nylon flexible composite thermoelectric film, the method disperses 0.5mmol selenium nanowires in 100mL ethylene glycol solution, 0.17g silver nitrate (adding amount meets silver nitrate and selenium nanometer The molar ratio of the line is 2:1) into the beaker, after stirring at 40°C for 2 hours, add 1 μL of pyrrole monomer and sonicate for 30 minutes, and add the oxidant ammonium persulfate (the addition amount meets the molar ratio of pyrrole monomer and ammonium persulfate to be 1: 5), the purpose of adding ammonium persulfate is to polymerize the pyrrole monomer into polypyrrole in situ. Stir at room temperature for 20 minutes, centrifuge at a speed of 4000r / min, extract the resulting black precipitate, and alternately add deionized water and absolute ethanol to wash at a speed of 4000r / min for 3 minutes to remove impurities. The black target product was dispersed in 30ml of absolute ethanol and ult...

Embodiment 2

[0047] A method for preparing high-performance silver selenide / polypyrrole / nylon flexible composite thermoelectric film, the method disperses 0.5mmol selenium nanowires in 100mL ethylene glycol solution, 0.17g silver nitrate (adding amount meets silver nitrate and selenium nanometer The molar ratio of the line is 2:1) into the beaker, stirred at 40°C for 2 hours, then added 2 μL of pyrrole monomer and ultrasonicated for 30 minutes, and added the oxidant ammonium persulfate (the addition amount met the molar ratio of pyrrole and ammonium persulfate to be 1:5) , The purpose of adding ammonium persulfate is to polymerize pyrrole monomers into polypyrrole in situ. Stir at room temperature for 20 minutes, centrifuge at a speed of 4000r / min, extract the resulting black precipitate, and alternately add deionized water and absolute ethanol to wash at a speed of 4000r / min for 3 minutes to remove impurities. The black target product was dispersed in 30ml of absolute ethanol and ultrason...

Embodiment 3

[0049] A method for preparing high-performance silver selenide / polypyrrole / nylon flexible composite thermoelectric film, the method disperses 0.5mmol selenium nanowires in 100mL ethylene glycol solution, 0.17g silver nitrate (adding amount meets silver nitrate and selenium nanometer The molar ratio of the line is 2:1) into the beaker, stirred at 40°C for 2 hours, then added 3 μL of pyrrole monomer and sonicated for 30 minutes, and added the oxidant ammonium persulfate (the amount added should meet the molar ratio of pyrrole and ammonium persulfate to be 1:5) The purpose of adding ammonium persulfate is to polymerize pyrrole monomers into polypyrrole in situ. Stir at room temperature for 20 minutes, centrifuge at a speed of 4000r / min, extract the resulting black precipitate, and alternately add deionized water and absolute ethanol to wash at a speed of 4000r / min for 3 minutes to remove impurities. The black target product was dispersed in 30ml of absolute ethanol and ultrasonic...

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Abstract

The invention relates to a method for preparing a high-performance polypyrrole / silver selenide / nylon flexible composite thermoelectric film. The method comprises the following steps: (1) taking a selenium nanowire as a template, reacting with silver nitrate in an ethylene glycol solvent to obtain a silver selenide nanostructure, then continuing to add a pyrrole monomer, carrying out ultrasonic treatment, then adding ammonium persulfate, stirring at room temperature, and carrying out in-situ polymerization on the silver selenide nanostructure to synthesize a polypyrrole / silver selenide nanostructure; and (2) dispersing the polypyrrole / silver selenide nanostructure in absolute ethyl alcohol, carrying out suction filtration, and carrying out vacuum drying to obtain the polypyrrole / silver selenide / nylon composite film. According to the method, the high-performance flexible thermoelectric film can be prepared, and a high-output-performance thermoelectric device is manufactured by using the film to supply power to a wearable electronic device.

Description

technical field [0001] The invention belongs to the technical field of flexible thermoelectric films, and relates to a method for preparing high-performance polypyrrole / silver selenide / nylon flexible composite thermoelectric films. Background technique [0002] Thermoelectric materials are a class of functional materials that can directly convert thermal energy to electrical energy. Thermoelectric power generation and refrigeration devices prepared by thermoelectric materials have the advantages of simple structure, small size, no wear, no noise, and no pollution. As an environmentally friendly material, thermoelectric materials have broad application prospects. [0003] The performance index of thermoelectric materials is generally measured by the dimensionless figure of merit ZT, and its expression is as follows: [0004] ZT = α 2 σT / κ where: α is the Seebeck coefficient; σ is the electrical conductivity; κ is the thermal conductivity; T is the thermodynamic temperature...

Claims

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Application Information

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IPC IPC(8): H01L35/24H01L35/16H01L35/34
CPCH10N10/856H10N10/852H10N10/01
Inventor 蔡克峰李雅婷
Owner TONGJI UNIV
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