Preparation method of PPy-SWCNTs nano composite thermoelectric film and nano composite thermoelectric film

A thermoelectric thin film and nanocomposite technology, which is applied in the manufacture/processing of thermoelectric devices, nanotechnology, nanotechnology, etc., can solve the problems of low Seebeck coefficient of PPy film and limit thermoelectric applications, etc., achieve good repeatability, improve thermoelectric performance, The effect of good film-forming properties

Active Publication Date: 2019-12-17
JIAXING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the report by Qi et al., the PPy self-supporting film obtained by interfacial polymerization has high electrical conductivity (Journal of Materials Chemistry C, 2013, 1:7102-7110), but the Seebeck coefficient of the PPy film is low, about at 6-7 μV / K, which limits its further thermoelectric applications

Method used

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  • Preparation method of PPy-SWCNTs nano composite thermoelectric film and nano composite thermoelectric film
  • Preparation method of PPy-SWCNTs nano composite thermoelectric film and nano composite thermoelectric film
  • Preparation method of PPy-SWCNTs nano composite thermoelectric film and nano composite thermoelectric film

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Comparison scheme
Effect test

Embodiment 1

[0038]A PPy-SWCNTs nanocomposite thin-film thermoelectric material with high thermoelectric performance, first prepares an aqueous solution of oxidant and dopant, and pre-cools it at 8°C, then ultrasonically disperses SWCNTs in pyrrole-cyclohexane solution, and then Add the SWCNTs-pyrrole-cyclohexane solution dropwise into the oxidant aqueous solution to form a water-cyclohexane interface, and oxidative polymerization reaction occurs at the interface at 8°C. After the reaction is sufficient, the film is washed and dried to obtain PPy-SWCNTs nano Composite film. The oxidant FeCl used in the preparation of PPy 3 The molar ratio to the dopant p-toluenesulfonic acid is 1:1, and the amount of SWCNTs added is 0.1 mg.

[0039] The preparation method of the above-mentioned composite film material with excellent thermoelectric properties is as follows:

[0040] 1) Add 0.36 M FeCl 3 Add p-toluenesulfonic acid into 12ml of deionized water, stir for 15 minutes until completely dissolve...

Embodiment 2

[0050] A PPy-SWCNTs nanocomposite thin-film thermoelectric material with high thermoelectric performance, first prepares an aqueous solution of oxidant and dopant, and pre-cools it at 8°C, then ultrasonically disperses SWCNTs in pyrrole-cyclohexane solution, and then Add the SWCNTs-pyrrole-cyclohexane solution dropwise into the oxidant aqueous solution to form a water-cyclohexane interface, and oxidative polymerization reaction occurs at the interface at 8°C. After the reaction is sufficient, the film is washed and dried to obtain PPy-SWCNTs nano Composite film. The oxidant FeCl used in the preparation of PPy 3 The molar ratio of p-toluenesulfonic acid and dopant is 1:1, and the amount of SWCNTs added is 0.3mg.

[0051] The preparation method of the above-mentioned composite film material with excellent thermoelectric properties is as follows:

[0052] 1) Add 0.36 M FeCl 3 Add p-toluenesulfonic acid into 12ml of deionized water, stir for 15 minutes until completely dissolve...

Embodiment 3

[0058] A PPy-SWCNTs nanocomposite thin-film thermoelectric material with high thermoelectric performance, first prepares an aqueous solution of oxidant and dopant, and pre-cools it at 8°C, then ultrasonically disperses SWCNTs in pyrrole-cyclohexane solution, and then Add the SWCNTs-pyrrole-cyclohexane solution dropwise into the oxidant aqueous solution to form a water-cyclohexane interface, and oxidative polymerization reaction occurs at the interface at 8°C. After the reaction is sufficient, the film is washed and dried to obtain PPy-SWCNTs nano Composite film. The oxidant FeCl used in the preparation of PPy 3 The molar ratio to the dopant p-toluenesulfonic acid is 1:1, and the amount of SWCNTs added is 0.5 mg.

[0059] The preparation method of the above-mentioned composite film material with excellent thermoelectric properties is as follows:

[0060] 1) Add 0.36 M FeCl 3 Add p-toluenesulfonic acid into 12ml of deionized water, stir for 15 minutes until completely dissolv...

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Abstract

The invention relates to a preparation method of a PPy-SWCNTs nano composite thermoelectric film and the nano composite thermoelectric film. The method comprises steps of 1) dissolving a proper amountof oxidizing agent and doping agent p-toluenesulfonic acid in the water to obtain solution A, and pre-cooling the solution A at 6-10 DEG C for 1-2 hours; 2) ultrasonically dispersing pyrrole monomersand SWCNTs powder into cyclohexane solution to obtain solution B; 3) dropwise adding the solution B into the solution A to form a clear interface; and 4) fully reacting at the temperature of 6-10 DEGC, cleaning and drying to obtain the PPy-SWCNTs nano composite thermoelectric film. Compared with the prior art, high conductivity of a PPy nano film obtained through low-temperature interfacial polymerization and the high Seebeck coefficient of the SWCNTs are effectively combined, a power factor at the room temperature reaches 37.6 mu V/mK<2>, and in addition, the preparation method is simple, high in repeatability and the like.

Description

technical field [0001] The invention relates to the field of semiconductor energy materials, in particular to a preparation method of a PPy-SWCNTs nanocomposite thermoelectric film and the nanocomposite thermoelectric film. Background technique [0002] With the acceleration of global industrialization and the rapid growth of population, energy consumption is also increasing worldwide. However, the energy on the earth is limited, and some traditional non-renewable energy sources, such as coal, oil, and natural gas, are becoming increasingly depleted. , the problem of energy shortage has become increasingly prominent, and has become a problem that cannot be ignored in every country, and seriously restricts the long-term stable development of the whole society. In order to alleviate the contradiction between economic development, energy and the environment, it is imminent to replace traditional fossil fuels with new renewable clean energy and new high-efficiency energy convers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/34H01L35/22H01L35/24B82Y30/00
CPCB82Y30/00H10N10/855H10N10/856H10N10/01
Inventor 宋海军姚媛媛鹿业波汤成莉孙权黄风立左春柽
Owner JIAXING UNIV
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