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A kind of oleylamine-doped n-type carbon nanotube thermoelectric material and its preparation method and application

A technology of carbon nanotubes and thermoelectric materials, which is applied in the directions of thermoelectric device junction lead-out materials and thermoelectric device manufacturing/processing, etc., can solve the problems of low n-type conversion efficiency of carbon nanotubes, etc. , high conductivity, good application and development prospects

Active Publication Date: 2020-08-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an oleylamine-doped n-type carbon nanotube thermoelectric material and its preparation method and application, which overcomes the defect of low n-type conversion efficiency of carbon nanotubes

Method used

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  • A kind of oleylamine-doped n-type carbon nanotube thermoelectric material and its preparation method and application
  • A kind of oleylamine-doped n-type carbon nanotube thermoelectric material and its preparation method and application
  • A kind of oleylamine-doped n-type carbon nanotube thermoelectric material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Dissolve 3.15 g of oleylamine in 10 mL of ethanol, stir magnetically for 30 min, and sonicate for 10 min to obtain a dopant with a concentration of 0.315 g / mL.

[0035] (2) Dissolve 10 mg of sodium dodecylbenzene sulfonate in 20 mL of ethanol, add 6 mg of multi-armed carbon nanotube yarn prepared by a floating gas-phase catalytic method, and let stand for 120 min of impregnation.

[0036] (3) Add the dopant with a concentration of 0.315g / mL prepared in step (1) dropwise into the product obtained in step (2), let it stand for immersion for 30min, then carry out vacuum filtration of the resulting reaction mixture, and use ethanol After washing 3 times, a black product was obtained, which was dried in an oven at 60° C. for 1 hour to obtain oleylamine-doped carbon nanotube fibers.

[0037] (4) Put the product obtained in step (3) into the crucible, then place the crucible in the tube furnace, close the intake valve and exhaust valve, open the vacuum device until the vac...

Embodiment 2

[0041] (1) Dissolve 1.50 g of oleylamine in 10 mL of ethanol, stir magnetically for 30 min, and sonicate for 10 min to obtain a dopant with a concentration of 0.15 g / mL.

[0042] (2) Dissolve 10 mg of sodium dodecylbenzene sulfonate in 20 mL of ethanol, add 6 mg of multi-armed carbon nanotube yarn prepared by a floating gas-phase catalytic method, and let stand for 120 min of impregnation.

[0043](3) Add the dopant with a concentration of 0.15 g / mL prepared in step (1) dropwise into the product obtained in step (2), let it stand for immersion for 30 min, then carry out vacuum filtration of the resulting reaction mixture, and use ethanol After washing 3 times, a black product was obtained, which was dried in an oven at 60° C. for 1 hour to obtain oleylamine-doped carbon nanotube fibers.

[0044] (4) Put the product obtained in step (3) into the crucible, then place the crucible in the tube furnace, close the intake valve and exhaust valve, open the vacuum device until the vacu...

Embodiment 3

[0048] (1) Dissolve 3.15 g of oleylamine in 10 mL of ethanol, stir magnetically for 30 min, and sonicate for 10 min to obtain a dopant with a concentration of 0.315 g / mL.

[0049] (2) Dissolve 10 mg of sodium dodecylbenzene sulfonate in 20 mL of ethanol, add 6 mg of multi-armed carbon nanotube yarn prepared by a floating gas-phase catalytic method, and let stand for 120 min of impregnation.

[0050] (3) Add the dopant with a concentration of 0.315g / mL prepared in step (1) dropwise into the product obtained in step (2), let it stand for immersion for 10min, then carry out vacuum filtration of the resulting reaction mixture, and use ethanol After washing three times, a black product was obtained, which was placed in an oven and dried at 60° C. for 6 hours to obtain oleylamine-doped carbon nanotube fibers.

[0051] (4) Put the product obtained in step (3) into the crucible, then place the crucible in the tube furnace, close the intake valve and exhaust valve, open the vacuum devi...

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Abstract

The invention relates to an oleylamine doped n-type carbon nanotube thermoelectric material and a preparation method and application thereof. The preparation method comprises the steps of: (1) dissolving oleylamine in alcohol to obtain a dopant; (2) dissolving sodium dodecyl benzene sulfonate in ethyl alcohol and adding a carbon nanotube material for sufficient action; (3) dropwise adding the dopant into a product obtained in the step (2) for sufficient action, and carrying out vacuum filtration, washing and drying to obtain an oleylamine doped carbon nanotube material; and (4) putting the product in the step (3) in a tube furnace, carrying out vacuumizing, importing inert gas and carrying out annealing to obtain the oleylamine doped n-type carbon nanotube thermoelectric material. According to the method, the conversion of electron transportation characteristic of carbon nanotubes from p type to n type can be realized in a short time, so that the preparation time is shortened, the airstability of n-type electron transportation characteristic is improved at the same time, the operation is convenient, the processing is simple and application potential is provided.

Description

technical field [0001] The invention belongs to the field of thermoelectric material preparation, and in particular relates to an oleylamine-doped n-type carbon nanotube thermoelectric material and a preparation method and application thereof. Background technique [0002] Today's society and economy are developing rapidly, technology is changing with each passing day, and the consumption and demand for energy are increasing. The traditional three major fossil energy sources are gradually exhausted, and at the same time, serious environmental problems are brought about. Therefore, seeking green and efficient new energy sources has become an urgent problem to be solved. Thermoelectric materials are functional materials that use carrier transport to realize mutual conversion between thermal energy and electrical energy. Due to their small size, low noise, low pollution and long life , can realize the advantages of waste heat reuse, and has unique advantages in energy supply. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L35/12H01L35/24H01L35/34
Inventor 王连军孙婷婷杨建平范宇驰罗维江莞
Owner DONGHUA UNIV
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