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High-performance polypyrrole-based ternary composite thermoelectric material and preparation method thereof

A polypyrrolyl-based ternary and thermoelectric material technology, which is applied in the preparation of high-performance polypyrrolyl-based ternary composite thermoelectric materials, composite electrothermal materials, and high-performance polypyrrolyl-based ternary composite thermoelectric materials, and can solve the problem of enhancing polypyrrolyl-based Ternary composite material system and other problems, to achieve the effect of good component dispersion uniformity, mild reaction and high thermoelectric performance

Inactive Publication Date: 2020-04-03
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combination of in-situ polymerization and solution mixing enables polypyrrole to be evenly wrapped on the surface of graphene nanosheets. At the same time, polyaniline and polypyrrole have similar structures and have a synergistic effect, which effectively overcomes the shortcomings of polyaniline nanorods agglomeration and difficulty in dispersing. And effectively improve the electrical conductivity of the material, and enhance the thermoelectric performance of the polypyrrole-based ternary composite system

Method used

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  • High-performance polypyrrole-based ternary composite thermoelectric material and preparation method thereof
  • High-performance polypyrrole-based ternary composite thermoelectric material and preparation method thereof
  • High-performance polypyrrole-based ternary composite thermoelectric material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Weigh 2 mL of aniline that has been distilled twice under reduced pressure, add it to 100 mL of concentrated hydrochloric acid with a concentration of 0.8 mol / L, stir evenly, and prepare aniline hydrochloric acid solution A; add 5 g of ammonium persulfate to 100 mL of 0.8 mol / L Prepare solution B in L of concentrated hydrochloric acid; mix solution A and solution B, place in a water bath at 30°C, and stir for 10 hours. The suspension was suction-filtered, washed with 0.8 mol / L hydrochloric acid solution, absolute ethanol, and deionized water until the filtrate was colorless; finally, the filter cake was dried in a vacuum oven at 60°C for 20 hours to obtain polyaniline powder.

[0048] 0.03mol FeCl 3 ·6H 2 O was dissolved in 30 mL distilled water for use. Add 3 g of graphene to 50 mL of ethanol solution (vol ethanol: vol water = 1:1), stir for 1 h, and ultrasonically treat for 2 h to obtain a uniformly dispersed graphene suspension, then dissolve 0.03 mol of pyrrole mo...

Embodiment 2

[0050] Weigh 2mL of aniline that has been distilled twice under reduced pressure, add it to 100mL of concentrated hydrochloric acid with a concentration of 1mol / L, stir well, and configure aniline hydrochloric acid solution A; add 2.5g of ammonium persulfate to 100mL of 1mol / L In concentrated hydrochloric acid, configure solution B; mix solution A and solution B, place in a water bath at 40°C, and stir for 8 hours. The suspension was suction-filtered, and washed with 1mol / L hydrochloric acid solution, absolute ethanol, and deionized water until the filtrate was colorless; finally, the filter cake was dried in a vacuum oven at 60°C for 20 hours to obtain polyaniline powder. figure 2 SEM image of the polyaniline nanorods prepared in this example.

[0051] 0.04mol FeCl 3 ·6H 2 O was dissolved in 30 mL distilled water for use. 5g graphene ( figure 1 The SEM photo of the graphene nanosheets used in the examples) was added to 50mL ethanol solution (vol ethanol:vol water=1:1) an...

Embodiment 3

[0056] Weigh 1.5mL of aniline that has been distilled twice under reduced pressure, add it to 100mL of concentrated hydrochloric acid with a concentration of 1.5mol / L, stir well, and configure it as aniline hydrochloric acid solution A; add 3.4g of ammonium persulfate to 100mL of a concentration of 1.5 mol / L concentrated hydrochloric acid to prepare solution B; mix solution A and solution B, place in a water bath at 60°C, and stir for 12 hours. The suspension was suction-filtered, washed with 1.5 mol / L hydrochloric acid solution, absolute ethanol, and deionized water until the filtrate was colorless; finally, the filter cake was dried in a vacuum oven at 60°C for 20 hours to obtain polyaniline powder.

[0057] 0.06mol FeCl 3 ·6H 2 O was dissolved in 30 mL distilled water for use. Add 3 g of graphene to 50 mL of ethanol solution (vol ethanol: vol water = 1:1) and stir for 1 h, ultrasonicate for 2 h to obtain a uniformly dispersed graphene suspension, then dissolve 0.12 mol of...

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Abstract

The invention discloses a high-performance polypyrrole-based ternary composite thermoelectric material and a preparation method thereof. The ternary composite material takes polypyrrole as a matrix and enables a pyrrole monomer to be doped with a graphene nanosheet and then carry out the adsorption and polymerization along the surface of graphene, thereby promoting the adsorption growth of polypyrrole on the surface of graphene as a template, and then the compound and polyaniline are compounded into a polypyrrole / graphene / polyaniline ternary composite thermoelectric material. By adopting the method and the material, the dispersity and compatibility of the composite material can be improved, a special conductive path is formed between the ternary composite materials, the thermoelectric property of the composite material is improved, the defects of low intrinsic conductivity of polypyrrole, high thermal conductivity of graphene and the like are overcome, and by compounding polypyrrole, graphene and polyaniline, the novel preparation method of the polypyrrole-based high-thermoelectric composite material which is simple to operate, environmentally friendly and good in component dispersion uniformity is provided.

Description

technical field [0001] The invention belongs to the technical field of preparation of new energy materials, and relates to a composite electrothermal material, in particular to a method for preparing a high-performance polypyrrole-based ternary composite thermoelectric material and a high-performance polypyrrole-based ternary material prepared by the method. Composite thermoelectric materials. Background technique [0002] Energy is the material basis of human activities, and the development of human society is inseparable from the emergence of high-quality energy and the use of advanced energy technologies. With the development of production and technology, environmental pollution and energy crisis are becoming more and more serious. Thermoelectric materials are environmentally friendly functional materials, which can utilize the movement of carriers (holes or electrons) inside solids to realize mutual conversion of thermal energy and electrical energy. Thermoelectric dev...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08L79/02C08K3/04C08G73/06C08G73/02
CPCC08G73/0266C08G73/0611C08K2201/001C08K2201/011C08L79/02C08L79/04C08L2205/02C08K3/042C08L9/04
Inventor 王乙涵殷勤俭吴思琦
Owner SICHUAN UNIV
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