Novel carbon nanotube based organic composite thermoelectric material

A technology of carbon nanotubes and thermoelectric materials, which can be applied in the direction of lead-out wire materials of thermoelectric devices, etc., can solve the problems of complex preparation process and high price of conductive polymers, and can enhance electron transmission efficiency, reduce thermal conductivity, and improve scattering cross-section. Effect

Inactive Publication Date: 2015-04-22
LIAONING NORMAL UNIVERSITY
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Problems solved by technology

[0007] However, it is still necessary to use relatively expensive SWNTs in the preparation of this thermoelectric material, and the preparation process of PEDOT:PSS conductive polymer is also relatively complicated.

Method used

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  • Novel carbon nanotube based organic composite thermoelectric material

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Embodiment Construction

[0029] Such as figure 1 Shown: It includes a flexible organic polymer substrate layer 4, on which an n-type conductive layer 2 mixed with MWNTs and PVDF is sprayed; Insulation and isolation layer 3; on the insulation and isolation layer 3, a p-type conductive layer 1 mixed with PTh and PVDF is sprayed; Prepared by a mixed method to ensure uniform dispersion and mixing between MWNTs and PVDF, and between PTh and PVDF; the p-type conductive layer 1 and n-type conductive layer 2 are only connected to each other at one end.

[0030] The insulating isolation layer 3 is made of an insulating substance that does not react with the p-type conductive layer 1 and the n-type conductive layer 2 .

[0031] MWNTs, PTh and PVDF are all industrial grade supplies; the mass percentages of PTh and PVDF in the p-type conductive layer 1 are:

[0032] Name Mass %

[0033] PTh 70-90%

[0034] PVDF margin;

[0035] The mass percentages of MWNTs and PVDF in the n-type conductive layer 2 are:

[...

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Abstract

A novel carbon nanotube based organic composite thermoelectric material of the invention comprises a flexible organic polymer substrate layer. The flexible organic polymer substrate layer is coated with an n-type conductive layer formed by mixing MWNTs and PVDF. The n-type conductive layer is coated with an insulated isolation layer composed of polymer. The insulated isolation layer is coated with a p-type conductive layer formed by mixing PTh and PVDF. The p-type conductive layer, the n-type conductive layer and the insulated isolation layer are prepared by solution blending so as to ensure uniform dispersive mixing between MWNTs and PVDF and between PTh and PVDF. The p-type conductive layer and the n-type conductive layer are connected with each other only at one end. The novel carbon nanotube based organic composite thermoelectric material of the invention has the advantages of simple processing, easily available raw materials, low cost, free size design, and the like.

Description

technical field [0001] The invention relates to the field of application of nanocomposite materials, thermoelectric materials and new power sources. This organic thermoelectric material can generate electricity by using waste heat or temperature gradients around the environment. The material is expected to be applied to new power supplies for various micro-electromechanical systems and micro-nano electronic devices field. Background technique [0002] Thermoelectric material is a semiconductor functional material that can realize mutual conversion between thermal energy and electrical energy by using the transport of carriers and phonons in solids and their interactions through the Seebeck effect. Partial, quiet operation, small and light, and no pollution to the environment. The thermoelectric conversion efficiency can be described by the thermoelectric figure of merit ZT, ,in is the conductivity, is the thermal conductivity, is the Seebeck coefficient. At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/24
Inventor 李梦轲付洪波张彤宋亚楠李婷婷许宁宁冯秋菊
Owner LIAONING NORMAL UNIVERSITY
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