Preparation method of organic composite material film and method for improving thermoelectric performance of organic composite material film

A composite material film, thermoelectric performance technology, applied in the field of organic thermoelectric materials, can solve problems such as poor thermoelectric performance, and achieve the effects of low cost, excellent stability, and simple preparation process conditions

Active Publication Date: 2019-05-03
WUHAN INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermoelectric properties of existing organic composite membranes are generally poor.

Method used

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  • Preparation method of organic composite material film and method for improving thermoelectric performance of organic composite material film
  • Preparation method of organic composite material film and method for improving thermoelectric performance of organic composite material film
  • Preparation method of organic composite material film and method for improving thermoelectric performance of organic composite material film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Prepare carbon nanotube (CNT) and polyaniline (PANI) composite powder by in-situ oxidative polymerization, add it to 0.1mol / L ammonia water, stir to remove doping, filter, wash with water and vacuum dry at 60°C After obtaining carbon nanotubes and intrinsic state polyaniline powder, take appropriate amount of carbon nanotubes and intrinsic state polyaniline powder, and add camphorsulfonic acid in a ratio of 2:1 to the molar ratio of polyaniline to camphorsulfonic acid. Doping, dispersing in m-cresol solvent and stirring to obtain a dispersion solution. The dispersion solution was dropped on a glass substrate and dried at 40°C to prepare an organic composite film, in which the carbon nanotube content was 70% by weight, and a part of the organic composite film was subjected to ultraviolet-visible light absorption analysis. The results are as follows figure 2 Line 1,

[0024] The film is immersed in 0.001mol / L ammonia solution at room temperature for 1min, then r...

Embodiment 2

[0025] Example 2: Same as Example 1, except that a camphorsulfonic acid doped organic composite film was prepared. The film was soaked in a 0.01mol / L ammonia solution at room temperature for 1 min, and then rinsed with water three times to neutrality and dried. Finally, its conductivity is reduced to 2405S cm -1 , Seebeck coefficient increased to 33μVK -1 , The power factor is increased to 262μWm -1 K -2 .

Embodiment 3

[0026] Example 3: Same as Example 1, with the difference that an organic composite film doped with camphorsulfonic acid was prepared. The organic composite film was immersed in a 1mol / L ammonia solution at room temperature for 1 min, and rinsed with water three times to Neutral and dry. Finally, its conductivity is reduced to 2068S cm -1 , Seebeck coefficient increased to 41μV K -1 , The power factor is increased to 348μWm - 1 K -2 , See Table 1 for details. At the same time, the organic composite film treated with lye is subjected to ultraviolet-visible light absorption analysis, and the results are as follows figure 2 The line 2 in the figure shows that the light absorption of the blend film prepared by the present invention is more obvious at 750 nanometers (the local π-polaron transition between PANI molecular chains), and the blue shift is also 440. The absorption peak at the nanometer (PANI molecular chain polaron-π * (Transition) The strength becomes weaker and almost ...

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PUM

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Abstract

The invention discloses a preparation method of an organic composite material film and a method for improving thermoelectric performance of the organic composite material film. The preparation methodcomprises the following steps: mixing aniline with a nano-carbon material by stirring, and preparing a composite film of the nano-carbon material and polyaniline through in-situ chemical oxidation polymerization and a camphorsulfonic acid secondary doping method, wherein the composite film of the nano-carbon material and polyaniline is the organic composite material film. The method for improvingthermoelectric performance comprises the following steps: putting the organic composite material film in an alkali solution for soaking treatment for undoping, then taking out the organic composite material film, carrying out washing with clear water until neutrality, and carrying out drying. The preparation process is simple in condition, low in cost, high in controllability and excellent in stability, and is suitable for large-scale industrial production of organic composite thermoelectric materials.

Description

Technical field [0001] The invention belongs to the field of organic thermoelectric materials, and relates to a method for preparing an organic composite material film and a method for improving its thermoelectric performance. Background technique [0002] In recent years, environmental pollution and energy crises have intensified. Research and development of clean energy and energy conversion technologies have become a global energy development trend. Thermoelectric conversion technology uses the Seebeck effect of semiconductor materials to recover a large amount of waste heat energy in life and industry and directly convert it into electric energy for reuse, effectively alleviating the problem of fossil energy consumption. At the same time, thermoelectric devices have no pollution to the environment, no mechanical moving parts, and reliable performance. They are widely used in aerospace, petrochemical, microelectronic devices, and wearable electronic equipment. Therefore, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08K3/04C08K5/42C08J5/18C08G73/02
Inventor 李鹏程梁原李慧刘治田高翔彭祥
Owner WUHAN INSTITUTE OF TECHNOLOGY
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