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Antimony telluride/poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) thermoelectric composite material and manufacturing method thereof

A technology of ethylenedioxythiophene and polystyrene sulfonate is applied in the field of thermoelectric composite material synthesis, which can solve the problem of high energy consumption and achieve the effects of low energy consumption, simple process and low thermal conductivity

Inactive Publication Date: 2015-04-22
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to use solvents such as ethanol, polyethanol, etc., which is not suitable for all composite materials, and further vacuum heat treatment is required, which requires high energy consumption, and the uniformity of the composite depends on the miscibility of the two materials in the solvent.

Method used

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  • Antimony telluride/poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) thermoelectric composite material and manufacturing method thereof
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  • Antimony telluride/poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) thermoelectric composite material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: solvothermal synthesis of Sb 2 Te 3 Matrix material

[0034] 1) with SbCl 3 and K 2 TeO 3 As the starting material, according to the stoichiometric ratio of n(SbCl 3 ):n(K 2 TeO 3 )=2:3 Weigh 0.002mol of SbCl 3 and 0.003mol of K 2 TeO 3 , and added to a 250ml two-necked round-bottomed flask, then added 0.5g polyvinylpyrrolidone, 0.5g NaOH and 80ml of diethylene glycol (measured with a measuring cylinder), and placed the two-necked round-bottomed flask in a temperature-controlled heating mantle , set the temperature at 240 ° C, keep warm for 4 hours, and adjust the rotation speed to 500 r / min. When the temperature of the reactants dropped to room temperature, they were transferred to 100 ml centrifuge tubes, centrifuged 3 times with isopropanol and acetone respectively, the speed of the centrifuge was set at 4000 r / min, and the time was 4 min. The lower black precipitate was taken out and placed in an oven at 70°C for drying for 6 hours...

Embodiment 2

[0038] Embodiment 2: solvothermal synthesis of Sb 2 Te 3 Matrix material

[0039] 1) with SbCl 3 and K 2 TeO 3 As the starting material, according to the stoichiometric ratio of n(SbCl 3 ):n(K 2 TeO 3 )=2:3 Weigh 0.002mol of SbCl 3 and 0.003mol of K 2 TeO 3 Add to a 250ml two-necked round-bottomed flask, then add 0.55g polyvinylpyrrolidone, 0.4g NaOH and 80ml of diethylene glycol (measured with a graduated cylinder), place the two-necked round-bottomed flask in a temperature-controlled heating mantle, set 230 DEG C of fixed temperature, insulation 5h, regulate rotating speed 500r / min. When the temperature of the reactants dropped to room temperature, they were transferred to 100 ml centrifuge tubes, centrifuged three times with isopropanol and acetone respectively, and the centrifuge speed was set at 4000 r / min for 4 minutes. The lower black precipitate was taken out and placed in an oven at 70°C for drying for 6 hours to finally obtain black Sb 2 Te 3 N...

Embodiment 3

[0041] Embodiment 3: solvothermal synthesis of Sb 2 Te 3 Matrix material

[0042] 1) with SbCl 3 and K 2 TeO 3 As the starting material, according to the stoichiometric ratio of n(SbCl 3 ):n(K 2 TeO 3 )=2:3 Weigh 0.002mol of SbCl 3 and 0.003mol of K 2 TeO 3 Add to a 250ml two-necked round-bottomed flask, add 0.45g polyvinylpyrrolidone, 0.6g NaOH and 80ml of diethylene glycol (measured with a measuring cylinder), place the two-necked round-bottomed flask in a temperature-controlled heating mantle, set Set the temperature at 250°C, keep warm for 3h, and adjust the rotating speed at 500 r / min. When the temperature of the reactants dropped to room temperature, they were transferred to 100 ml centrifuge tubes, centrifuged 3 times with isopropanol and acetone respectively, the speed of the centrifuge was set at 4000 r / min, and the time was 4 min. The lower black precipitate was taken out and placed in an oven at 70°C for drying for 6 hours to finally obtain blac...

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Abstract

The invention discloses an antimony telluride / poly(3,4-ethylenedioxythiophene) / poly(styrene sulfonate) thermoelectric composite material and a manufacturing method of the antimony telluride / poly(3,4-ethylenedioxythiophene) / poly(styrene sulfonate) thermoelectric composite material, and belongs to the technical field of thermoelectric composite material synthesis. The manufacturing method comprises the steps that (1) antimony telluride nanopowder is prepared; (2) under the vacuum condition, spark plasma sintering is performed on the antimony telluride nanopowder prepared in the step (1), and then the antimony telluride nanopowder is cooled, so that an Sb2Te3 block material is obtained; (3) the Sb2Te3 block material prepared in the step (2) is cut, then is soaked in a poly(3,4-ethylenedioxythiophene) / poly(styrene sulfonate) solution and is stored at the temperature of 3 DEG C-5 DEG C for 20-40 days, so that the antimony telluride / poly(3,4-ethylenedioxythiophene) / poly(styrene sulfonate) thermoelectric composite material is obtained. The antimony telluride / poly(3,4-ethylenedioxythiophene) / poly(styrene sulfonate) thermoelectric composite material and the manufacturing method of the antimony telluride / poly(3,4-ethylenedioxythiophene) / poly(styrene sulfonate) thermoelectric composite material have the advantages that the process is low in energy consumption, the cost is low, and the process is simple; the composite material is good in thermoelectric performance and high in ZT value.

Description

technical field [0001] The invention specifically relates to an antimony telluride / poly(3,4-ethylenedioxythiophene): polystyrene sulfonate thermoelectric composite material and a preparation method thereof, belonging to the field of thermoelectric composite material synthesis. Background technique [0002] In today's society, the energy crisis is becoming more and more serious, and the research and development of new energy conversion materials is on the agenda. Thermoelectric material is a functional material that realizes mutual conversion of thermal energy and electrical energy through the movement of carriers inside a solid, and is mainly used in thermoelectric power generation and refrigeration. The performance of thermoelectric materials is evaluated by ZT (thermoelectric performance index): ZT=S 2 σT / K, where S is the Seebeck coefficient, σ is the electrical conductivity, T is the absolute temperature, and K is the thermal conductivity. An ideal thermoelectric mater...

Claims

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Application Information

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IPC IPC(8): H01L35/14H01L35/24
Inventor 郑文文王自昱熊锐石兢
Owner WUHAN UNIV
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