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Thermoelectric material

A technology of thermoelectric materials and composite materials, which is applied in the direction of thermoelectric device junction lead-out materials, thermoelectric device manufacturing/processing, nanotechnology for materials and surface science, etc., can solve problems such as weak thermoelectric effect and low voltage, Achieve the effects of improving thermoelectric performance, increasing Seebeck coefficient, good flexibility and bending resistance

Inactive Publication Date: 2018-09-21
佛山市领卓科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the current thermoelectric materials generally have the problems of weak thermoelectric effect and low voltage, which limit their application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Add 4,4'-diaminodiphenyl ether and pyromellitic dianhydride to 300 ml of DMAC at a molar ratio of 1:1, with a solid content of 8%, and stir and react at 20 degrees Celsius for 6 hours to obtain Viscous polyamic acid solution mixture, viscosity 5250cp.

[0031] (2) At 20 degrees Celsius, vacuum degas the mixture for 1 hour, and apply the mixture to stainless steel at a relative humidity of 50%, then place it in an aqueous solution of ethanol (40% ethanol by volume), soak for 20 Minutes, then dried at 60 degrees Celsius for 10 minutes, then transferred to a furnace with a temperature increase of 5 degrees Celsius per minute, raised the temperature to 300 degrees Celsius, and kept the temperature for 30 minutes to obtain a polyimide porous membrane.

[0032] The average pore diameter of the porous membrane measured by mercury intrusion porosimetry was 83 nanometers, and the porosity was 35%. The thickness of the film was measured to be 12 microns with a thickness gaug...

Embodiment 2

[0037] (1) Add 4,4'-diaminodiphenyl ether and pyromellitic dianhydride to 1000 ml of DMAC at a molar ratio of 1:1, with a solid content of 15%, and stir and react at 20 degrees Celsius for 6 hours to obtain Viscous polyamic acid solution mixture, viscosity 12200cp.

[0038] (2) Under the conditions of 20 degrees Celsius and 50% relative humidity, the mixture is vacuum degassed for 1 hour, the mixture is coated on stainless steel, and then placed in an aqueous solution of ethanol (ethanol volume content 60%), soaked for 20 minutes, and then Dry at 80 degrees centigrade for 10 minutes, then transfer to a furnace that raises the temperature at 5 degrees centigrade per minute, heat up to 320 degrees centigrade, and keep the temperature for 30 minutes to obtain a polyimide porous membrane.

[0039] The average pore diameter of the porous membrane measured by mercury intrusion porosimetry was 56 nanometers, and the porosity was 32%. The thickness of the film was measured to be 15 m...

Embodiment 3

[0044] (1) Add 4,4'-diaminodiphenyl ether and pyromellitic dianhydride to 1000 ml of DMAC at a molar ratio of 1:1, with a solid content of 18%, and stir and react at 20 degrees Celsius for 6 hours to obtain Viscous polyamic acid solution mixture, viscosity 20400cp.

[0045] (2) Under the conditions of 20 degrees Celsius and 50% relative humidity, the mixture is vacuum degassed for 1 hour, the mixture is coated on stainless steel, and then placed in an aqueous solution of ethanol (40% ethanol by volume), soaked for 20 minutes, and then Dry at 60 degrees centigrade for 10 minutes, then transfer to a furnace with a temperature increase of 5 degrees centigrade per minute, raise the temperature to 300 degrees centigrade, and keep the temperature for 60 minutes to obtain a polyimide porous membrane.

[0046] The average pore diameter of the porous membrane measured by mercury intrusion porosimetry was 45 nanometers, and the porosity was 30%. The thickness of the film was measured to ...

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Abstract

The invention discloses a thermoelectric material and a manufacture technology thereof, and particularly relates to a polyimide Bi2Te3 thermoelectric film composite material and a manufacture method thereof. The thermoelectric material is good in size and good in thermoelectric performance.

Description

technical field [0001] The invention relates to the field of thermoelectric materials, in particular to a nanometer thermoelectric material and a manufacturing process thereof. Background technique [0002] Temperature difference is a phenomenon that often exists in nature. The thermoelectric effect means that when the temperature at both ends of the object is different, the carriers in the object will diffuse from the high temperature area to the low temperature area along the temperature gradient, so that the number of carriers in the low temperature area gradually exceeds that in the high temperature area, thereby establishing a built-in electric field . A thermoelectric material is a material that converts a temperature difference into a potential difference, thereby turning the temperature difference into a resource. For example, a lot of waste heat in production and life can be used to generate electricity, and the temperature difference between the human body and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/24H01L35/16H01L35/34B82Y30/00B82Y40/00H10N10/856H10N10/01H10N10/852
CPCB82Y30/00B82Y40/00H10N10/856H10N10/852H10N10/01
Inventor 不公告发明人
Owner 佛山市领卓科技有限公司
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