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Method for obtaining high-performance polyaniline base thermoelectric materials

A polyaniline-based, thermoelectric material technology, applied in the direction of thermoelectric device junction lead-out material, etc., can solve the problems of difficult to achieve highly ordered arrangement of polyaniline molecules, limited thermoelectric performance, etc., to reduce the π-π conjugation effect. , low cost, and the effect of improving the degree of order

Active Publication Date: 2013-06-05
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI +1
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Problems solved by technology

In the study, it was found that the induction of carbon nanotubes can improve the order degree of polyaniline molecular chain arrangement to a certain extent macroscopically, but due to the existence of cohesive force (such as van der Waals force) in the molecule, it makes the polyaniline molecular It is still a tightly wound wool ball conformation, and it is difficult to achieve a highly ordered arrangement of polyaniline molecules, so the improvement of thermoelectric performance is also limited.

Method used

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  • Method for obtaining high-performance polyaniline base thermoelectric materials
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  • Method for obtaining high-performance polyaniline base thermoelectric materials

Examples

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Embodiment 1

[0022] Preparation of polyaniline film (PANI film) thermoelectric material and single-walled carbon nanotube / polyaniline composite film (SWNT / PANI film) thermoelectric material from m-cresol solvent

[0023] The initial polyaniline powder (PANI) (0.86 g) prepared by in-situ oxidative polymerization was added to 250 mL of 1 mol / L ammonia solution, stirred for 24 hours, filtered, and vacuum-dried at 60°C to obtain the intrinsic polyaniline powder. Take 0.093g polyaniline powder in the intrinsic state, add an appropriate amount of camphorsulfonic acid according to the molar ratio of camphorsulfonic acid and polyaniline as 1:2, mix and fully grind for 2 hours to obtain polyaniline doped with camphorsulfonic acid powder.

[0024] Then, the polyaniline powder doped with camphorsulfonic acid was added into 6 mL of m-cresol, and stirred and reacted at room temperature for 8 hours to obtain a polyaniline solution. Draw about 0.03mL solution and pour it to an area of ​​20×20mm 2 On a ...

Embodiment 2

[0027] Preparation of polyaniline bulk (PANI bulk) thermoelectric materials and single-wall carbon nanotube / polyaniline composite bulk (SWNT / PANI bulk) thermoelectric materials from m-cresol solvent

[0028] The preceding steps of Example 1 were repeated to prepare polyaniline powder doped with camphorsulfonic acid. 0.21 g of camphorsulfonic acid-doped polyaniline powder was weighed and added into 3 mL of m-cresol solvent, and stirred at room temperature for 8 hours to obtain a concentrated solution of polyaniline. Take 1mL polyaniline concentrated solution, first dry naturally at room temperature in a fume hood to remove most of the solvent, and then put it in a vacuum drying oven at 60°C for 72 hours to obtain a polyaniline block treated with m-cresol solvent (PANI block).

[0029]Add single-walled carbon nanotubes with masses of 0.0465g, 0.372g, and 1.767g to the above-mentioned concentrated solution of polyaniline (the content of intrinsic polyaniline is 0.093g), and cont...

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Abstract

The invention discloses a method for obtaining high-performance polyaniline base thermoelectric materials. The method comprises the following steps: (1) mixing polyaniline powder with ammonia water solution, carrying out stir, filter and drying, and obtaining eigen-state polyaniline, (2) mixing the polyaniline with sulfonic acid, carrying out grind, and obtaining polyaniline doped with the sulfonic acid, (3) dissolving the polyaniline doped with the sulfonic acid in phenol solvent, carrying out stirr, and obtaining polyaniline solution, and (4) adding nanocarbon materials in the polyaniline solution, carrying out stir in a full mode, removing the phenol solvent, and obtaining the high-performance polyaniline base thermoelectric materials. According to the method for obtaining the high-performance polyaniline base thermoelectric materials, the order degree of polyaniline molecular chain arrangement is firstly improved through interaction of the phenol solvent and polyaniline molecules, then through composition with the nano carbon composite materials, the order degree of the polyaniline molecular chain arrangement is further enhanced, and the high-performance polyaniline base thermoelectric materials are obtained. Therefore, ZT values of the polyaniline base thermoelectric materials and ZT values of block-shaped materials can be respectively improved by 0.5 and 0.05.

Description

technical field [0001] The invention belongs to the technical field of organic thermoelectric materials, and in particular relates to a method for obtaining high-performance polyaniline-based thermoelectric materials. Background technique [0002] Thermoelectric conversion technology is a technology that uses the Seebeck effect and Peltier effect of semiconductor materials to directly convert heat and electricity, including thermoelectric power generation and thermoelectric cooling. This technology has the characteristics of small system size, high reliability, no emission of pollutants, and wide applicable temperature range. As a special power supply and high-precision temperature control device, it has been widely used in high-tech fields such as space technology, military equipment, and IT technology. . In addition, as a new type of clean energy technology, thermoelectric conversion technology has attracted international attention in recent years. Most of the thermoelec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/24H10N10/856
Inventor 姚琴王群陈立东金智渊
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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