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Preparation method of (1,3-dithio-2-carbonyl)-condensed naphthaldiimide/carbon nanotube composite thermoelectric material

A technology of naphthalene diimide and carbon nanotubes is applied in the field of preparing composite thermoelectric materials by physical blending, which can solve the problems of complex polymerization reaction conditions of conductive polymers, insufficient quantification of polymerization degree, affecting the thermoelectric properties of materials, and the like. Achieve the effects of good component dispersion uniformity, easy operation and improved thermoelectric performance

Active Publication Date: 2016-10-26
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although so far, organic thermoelectric materials have achieved ZT values ​​as high as 0.42 [G.-H.Kim, et al., Nature Mater., 12, 719 (2013)], however, the existence of conductive polymers as thermoelectric materials Several major problems still cannot be ignored: (1) The polymerization reaction conditions of complex conductive polymers are complicated, and the degree of polymerization is usually not high; (2) The degree of polymerization of polymers is not well quantified, and the degree of polymerization will directly Affect the thermoelectric properties of the material, resulting in poor repeatability of the material performance; (3) Since the polymer is almost insoluble in all common organic solvents, it brings certain limitations to the processing of the material

Method used

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  • Preparation method of (1,3-dithio-2-carbonyl)-condensed naphthaldiimide/carbon nanotube composite thermoelectric material
  • Preparation method of (1,3-dithio-2-carbonyl)-condensed naphthaldiimide/carbon nanotube composite thermoelectric material
  • Preparation method of (1,3-dithio-2-carbonyl)-condensed naphthaldiimide/carbon nanotube composite thermoelectric material

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Experimental program
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Effect test

Embodiment 1

[0028] (1) Add 13 mg of single-walled carbon nanotubes to 35 mL of ethanol solvent, and ultrasonically disperse for 30 min;

[0029] (2) Add 13 mg of (1,3-dithio-2-carbonyl) fused naphthalene diimide to 7 mL of dichloromethane solvent, and stir at room temperature until the solid is basically dissolved;

[0030] (3) slowly drop the suspension obtained in step (2) into the suspension obtained in step (1);

[0031] (4) The mixture obtained in step (3) was stirred at room temperature for 24h;

[0032] (5) The reaction mixture obtained in step (4) was vacuum filtered to obtain a yellow-black solid filter membrane. Wash the yellow-black solid several times with ethanol, dry it, and finally obtain a relatively high-purity (1,3-dithio-2-carbonyl) fused naphthalene diimide / carbon nanotube composite thermoelectric material, whose electrical conductivity 144.1S cm -1 , Seebeck coefficient is 52.2μV / K.

Embodiment 2

[0034] According to the method and steps described in Example 1, just add 13 mg of single-walled carbon nanotubes in step (1) to 35 mL of methanol, and filter the yellow-black solid membrane obtained in step (4) in step (5). Multiple washes were performed with methanol. Finally, the conductivity of (1,3-dithio-2-carbonyl)-fused naphthalene diimide / carbon nanotube composite thermoelectric material was 138.2 S cm -1 , Seebeck coefficient is 51.2μV / K.

Embodiment 3

[0036] According to the method and steps described in Example 1, only 13 mg of (1,3-dithio-2-carbonyl) fused naphthalene diimide in step (2) was added to 7 mL of chloroform solvent. Finally, the conductivity of (1,3-dithio-2-carbonyl)-fused naphthalene diimide / carbon nanotube composite thermoelectric material was 135.8 S cm -1 , Seebeck coefficient is 51.5μV / K.

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Abstract

The invention relates to a preparation method of a (1,3-dithio-2-carbonyl)-condensed naphthaldiimide / carbon nanotube composite thermoelectric material, and especially relates to a preparation method for forming a composite thermoelectric material by physically mixing naphthaldiimide derivatives with a carbon nanotube under the condition that ethanol / methyl chloride is taken as a mixed solvent. According to the preparation method, by taking the carbon nanotube as a base material, the naphthaldiimide derivatives as organic components and the ethanol / methyl chloride as the mixed solvent, at a room temperature, the (1,3-dithio-2-carbonyl)-condensed naphthaldiimide / carbon nanotube composite thermoelectric material is prepared through mechanical mixing. According to the invention, naphthaldiimide micromolecules with good dissolvability are compounded with the carbon nanotube with high conductivity, and the provided novel preparation method of the (1,3-dithio-2-carbonyl)-condensed naphthaldiimide / carbon nanotube composite thermoelectric material has the advantages of simple operation and good component dispersing uniformity and film forming ability.

Description

technical field [0001] The invention relates to a method for preparing a composite thermoelectric material using (1,3-dithio-2-carbonyl) fused naphthalene diimide and carbon nanotubes, in particular to a method using alcohol / methyl chloride as a mixed solvent In this case, a method for preparing a composite thermoelectric material by physically blending (1,3-dithio-2-carbonyl)-fused naphthalene diimide with carbon nanotubes. Background technique [0002] As a functional material that can directly convert thermal energy and electrical energy by using the movement of carriers inside its solid, thermoelectric materials are increasingly favored by researchers in the field of materials and energy in today's global industrialization process. Since there are many unavoidable generated but discarded heat energies in production and life, such as: frictional heat, geothermal heat, vehicle exhaust, factory waste heat, etc., therefore, it has become a priority to use thermoelectric mate...

Claims

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Application Information

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IPC IPC(8): H01L35/24
CPCH10N10/856Y02P20/129
Inventor 李昕李红丽陈光明高彩艳
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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