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Self-supported and flexible poly(3,4-ethylenedioxythiophene) (PEDOT) nanofiber/single-walled carbon nanotubes (SWCNTs) composite thermoelectric material thin film and preparation method thereof

A technology of nanofibers and material films, which is applied in the direction of thermoelectric device node lead-out materials, thermoelectric device manufacturing/processing, nanotechnology, etc., can solve the problems of low performance and inability to use flexible electronic materials, etc., and achieve high yield, The effect of excellent electrical conductivity and good film-forming performance

Inactive Publication Date: 2017-09-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the material is still low, and the resulting composite is in powder form, which cannot be used for flexible electronic materials

Method used

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  • Self-supported and flexible poly(3,4-ethylenedioxythiophene) (PEDOT) nanofiber/single-walled carbon nanotubes (SWCNTs) composite thermoelectric material thin film and preparation method thereof
  • Self-supported and flexible poly(3,4-ethylenedioxythiophene) (PEDOT) nanofiber/single-walled carbon nanotubes (SWCNTs) composite thermoelectric material thin film and preparation method thereof
  • Self-supported and flexible poly(3,4-ethylenedioxythiophene) (PEDOT) nanofiber/single-walled carbon nanotubes (SWCNTs) composite thermoelectric material thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A self-supporting flexible PEDOT nanofiber / SWCNTs composite thermoelectric thin film material, first with FeCl 3 The methanol dispersion of PEDOT nanofiber was prepared by the self-assembled micelle soft template method as the oxidant, and then it was mixed with the methanol dispersion of SWCNTs by ultrasonic, and the self-assembled film was vacuum-filtered using a microporous filter membrane with a pore size of 0.22 microns, and dried in vacuum After that, the composite membrane falls off from the microporous filter membrane autonomously, and a self-supporting PEDOTnanofiber / SWCNTs thermoelectric thin film is obtained. The surfactant SDS used in the preparation of PEDOT nanofiber, the oxidant FeCl 3 , the molar ratio of the three EDOT monomers is 30:15:7, and the mass fraction of SWCNTs in the composite is 6.7wt%.

[0042] The preparation method of the flexible thin film material with excellent thermoelectric properties is as follows:

[0043] (1) Preparation of PEDO...

Embodiment 2

[0050] A self-supporting flexible PEDOT nanofiber / SWCNTs composite thermoelectric thin film material, first with FeCl 3 The methanol dispersion of PEDOT nanofiber was prepared by the self-assembled micelle soft template method as the oxidant, and then it was mixed with the methanol dispersion of SWCNTs by ultrasonic, and the self-assembled film was vacuum-filtered using a microporous filter membrane with a pore size of 0.22 microns, and dried in vacuum After that, the composite membrane falls off from the microporous filter membrane autonomously, and a self-supporting PEDOTnanofiber / SWCNTs thermoelectric thin film is obtained. The surfactant SDS used in the preparation of PEDOT nanofiber, the oxidant FeCl 3 , the molar ratio of the three EDOT monomers is 30:15:7, and the mass fraction of SWCNTs in the composite is 12.1wt%.

[0051] The preparation method of the flexible thin film material with excellent thermoelectric properties is as follows:

[0052] (1) Preparation of PED...

Embodiment 3

[0056] A self-supporting flexible PEDOT nanofiber / SWCNTs composite thermoelectric thin film material, first with FeCl 3 The methanol dispersion of PEDOT nanofiber was prepared by the self-assembled micelle soft template method as the oxidant, and then it was mixed with the methanol dispersion of SWCNTs by ultrasonic, and the self-assembled film was vacuum-filtered using a microporous filter membrane with a pore size of 0.22 microns, and dried in vacuum After that, the composite membrane falls off from the microporous filter membrane autonomously, and a self-supporting PEDOTnanofiber / SWCNTs thermoelectric thin film is obtained. The surfactant SDS used in the preparation of PEDOT nanofiber, the oxidant FeCl 3 , the molar ratio of the three EDOT monomers is 30:15:7, and the mass fraction of SWCNTs in the composite is 19.2wt%.

[0057] The preparation method of the flexible thin film material with excellent thermoelectric properties is as follows:

[0058] (1) Preparation of PED...

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Abstract

The invention relates to a self-supported and flexible poly(3,4-ethylenedioxythiophene) (PEDOT) nanofiber / single-walled carbon nanotubes (SWCNTs) composite thermoelectric material thin film and a preparation method thereof. The self-supported and flexible PEDOT nanofiber / SWCNTs composite thermoelectric material thin film is prepared according to the following steps of (1) dissolving an anionic surfactant in deionized water, adding an oxidizing agent, and performing stirring in oil bath to obtain a mixed solution A; (2) adding a PEDOT monomer into the mixed solution A, performing oil bath reaction, cooling, separation and cleaning to obtain a PEDOT nanofiber, and dispersing the PEDOT nanofiber in methanol for use; (3) performing ultrasonic dispersion on SWCNTs in the methanol, performing ultrasound after a PEDOT methanol solution is mixed to obtain a mixed solution B; and (4) pumping and filtering the mixed solution B onto a micropore filtering film by a vacuum pumping and filtering method, and performing drying to obtain the self-supported and flexible PEDOT nanofiber / SWCNTs composite thermoelectric material thin film. Compared with the prior art, the high conductivity of PEDOT and high Seeback coefficient of the SWCNTs are effectively combined, and the power factor under a room temperature reaches 14.4 micro volts / mK<2>; and moreover, the preparation method is simple and has the advantages of high yield, high repeatability and the like.

Description

technical field [0001] The invention relates to the field of flexible electronic materials, in particular to a self-supporting flexible PEDOT nanofiber / SWCNTs composite thermoelectric material film and a preparation method thereof. Background technique [0002] Recently, due to the characteristics of softness, deformability, light weight, portability, and large-area application, flexible electronic materials can be compatible with spin coating, spray printing, embossing and other solution processes, as well as R2R manufacturing. s concern. Among them, the construction of flexible materials for wearable energy harvesting and their deviceization is an important development direction of flexible electronics. [0003] Thermoelectric material is an environmentally friendly "green" energy conversion material, which can directly realize the mutual conversion of heat energy and electric energy without polluting the environment. The thermoelectric device power generation technology...

Claims

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Application Information

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IPC IPC(8): H01L35/24H01L35/34B82Y30/00H10N10/856H10N10/01
CPCB82Y30/00H10N10/856H10N10/01
Inventor 蔡克峰宋海军
Owner TONGJI UNIV
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