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Preparation method for improving performance of composite thermoelectric materials

A thermoelectric material, enhanced composite technology, applied in the manufacture/processing of thermoelectric devices, junction lead-out materials of thermoelectric devices, nanotechnology for materials and surface science, etc. problems, to achieve the effect of improving thermoelectric performance, simple preparation method and mild reaction conditions

Active Publication Date: 2017-05-31
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as an organic thermoelectric material, the low conductivity makes the ZT value of the material lower than that of the inorganic thermoelectric material

Method used

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  • Preparation method for improving performance of composite thermoelectric materials
  • Preparation method for improving performance of composite thermoelectric materials
  • Preparation method for improving performance of composite thermoelectric materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Ingredients: First, add 1g polystyrene sodium sulfonate (PSSNa) into 145mL deionized water, stir and dissolve, then add 0.005g multi-walled carbon nanotube (MWCNT) and 0.005g graphene, and ultrasonically disperse evenly Afterwards, 1.25g of 3,4-ethylenedioxythiophene (EDOT) monomer was added dropwise, mechanically stirred until uniformly mixed, and N 2 1h.

[0033] (2) Polymerization: Add 0.05g of ferric sulfate and 2g of ammonium persulfate into 12.5g of deionized water, stir evenly, and then add to the dispersion obtained in step (1). The reaction process is N 2 Atmosphere, the mechanical stirring speed is 600rpm, the reaction temperature is 5°C, and the reaction time is 48h.

[0034] (3) Centrifugation and washing: After the polymerization is completed, the product is centrifuged, and the obtained black precipitate is washed and centrifuged repeatedly.

[0035] (4) Drying: The finally obtained black precipitate was vacuum-dried at 100° C. for 12 hours.

[003...

Embodiment 2

[0038] (1) Ingredients: first add 1g polystyrene sulfonate sodium (PSSNa) into 145mL deionized water, stir to dissolve, add 0.01g multi-walled carbon nanotubes (MWCNT), after ultrasonic dispersion is uniform, drop 1.25g 3, 4-Ethylenedioxythiophene (EDOT) monomer, mechanically stirred until uniformly mixed, and passed into N 2 1h.

[0039] (2) Polymerization: Add 0.05g of ferric sulfate and 2g of ammonium persulfate into 12.5g of deionized water, stir evenly, and then add to the dispersion obtained in step (1). The reaction process is N 2 Atmosphere, the mechanical stirring speed is 600rpm, the reaction temperature is 5°C, and the reaction time is 48h.

[0040] (3) Centrifugation and washing: after the polymerization is completed, the product is centrifuged, and the obtained black precipitate is repeatedly washed and centrifuged.

[0041] (4) Drying: The finally obtained black precipitate was vacuum-dried at 100° C. for 12 hours.

[0042] The conductivity of the sample obtain...

Embodiment 3

[0044] (1) Ingredients: First, add 1g of polystyrene sodium sulfonate (PSSNa) into 145mL of deionized water, stir and dissolve, then add 0.01g of graphene, after ultrasonic dispersion, add dropwise 1.25g of 3,4-ethylenedioxythiophene (EDOT) monomer, stir mechanically until evenly mixed, and pass into N 2 1h.

[0045] (2) Polymerization: Add 0.05g of ferric sulfate and 2g of ammonium persulfate into 12.5g of deionized water, stir evenly, and then add to the dispersion obtained in step (1). The reaction process is N 2 Atmosphere, the mechanical stirring speed is 600rpm, the reaction temperature is 5°C, and the reaction time is 48h.

[0046] (3) Centrifugation and washing: after the polymerization is completed, the product is centrifuged, and the obtained black precipitate is repeatedly washed and centrifuged.

[0047] (4) Drying: The finally obtained black precipitate was vacuum-dried at 100° C. for 12 hours.

[0048] The conductivity of the sample obtained in this example i...

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Abstract

The invention provides a preparation method of carbon nanotube / graphene / poly(3,4-ethylenedioxythiophene): polystyrene sulfonic acid composite thermoelectric materials. The method comprises the following steps of dissolving poly(sodium styrenesulfonate) into water, adding a proper amount of carbon nanotube and graphene to disperse uniformly, dripwise adding a proper amount of monomers of 3,4-ethylenedioxythiophene, stirring uniformly, and adding ammonium persulfate and iron sulfate to initiate polymerization reaction. After reaction, products are centrifuged to obtain black products, the black products are washed repeatedly with deionized water, centrifuging is performed, and vacuum drying is performed. The invention provides a new environment-friendly preparation method for carbon nanotube / graphene / poly(3,4-ethylenedioxythiophene): polystyrene sulfonic acid composite thermoelectric materials, which has the advantages that the technology condition is simple and the product cost is low. The preparation method provided by the invention improves the thermoelectric performance of the composite thermoelectric materials at the same time.

Description

technical field [0001] The invention relates to a preparation method of carbon nanotube / graphene / poly(3,4-ethylenedioxythiophene):polystyrenesulfonic acid composite thermoelectric material, in particular to thiophene doped carbon nanotube and Graphene method to form composite thermoelectric materials. Background technique [0002] With the acceleration of industrialization, it is more and more urgent to solve the ensuing environmental pollution and energy shortage problems. Waste heat will inevitably be generated in daily life and production. If a material that can utilize waste heat can be developed and used, the energy crisis will be alleviated to a large extent. Thermoelectric materials are functional materials that are environmentally friendly and can recycle waste heat. [0003] Thermoelectric materials mainly use the movement of carriers (holes or electrons) to realize direct conversion between heat energy and electric energy. They have small size, light weight, no t...

Claims

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Application Information

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IPC IPC(8): H01L35/34H01L35/24H01L35/22B82Y30/00H10N10/01H10N10/855H10N10/856
CPCB82Y30/00H10N10/855H10N10/856H10N10/01
Inventor 刘海辉刘艳欣靳艳梅张兴祥王建平
Owner TIANJIN POLYTECHNIC UNIV
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