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Efficient fiber-based thermoelectric energy supply material and preparation method thereof

A technology of thermoelectric materials and fiber substrates, which is applied in the manufacture/processing of thermoelectric devices, fiber processing, and parts of thermoelectric devices, etc. It can solve the problems of low power generation efficiency, power consumption of heating plates, and difficulty in carrying around, etc., to achieve long-term use Long life, not easy to fall off

Pending Publication Date: 2021-01-15
WUHAN TEXTILE UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexible temperature-pressure sensor can use the temperature difference between the upper and lower surfaces to generate self-generated electricity, but the temperature difference between the upper and lower surfaces is realized by placing the sensor on a heating plate, and the use of the heating plate itself consumes electric energy and is not easy to carry around , resulting in limited application of
In order for this kind of flexible thermoelectric material to be used for energy supply, it is necessary to make its upper and lower surfaces independently generate a temperature difference. In the prior art, the temperature difference between the body temperature and the ambient temperature is usually used for self-power generation, but the temperature difference is too small to generate electricity. Low efficiency, difficult to meet the needs of practical applications

Method used

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  • Efficient fiber-based thermoelectric energy supply material and preparation method thereof
  • Efficient fiber-based thermoelectric energy supply material and preparation method thereof
  • Efficient fiber-based thermoelectric energy supply material and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0031] The invention provides a preparation method of a high-efficiency fiber-based thermoelectric energy supply material, comprising the following steps:

[0032] S1, preparing a thermoelectric solution containing a thermoelectric material;

[0033] S2. Immerse the fiber substrate in the thermoelectric solution prepared in step S1, take it out and dry it, and obtain a fiber substrate with a thermoelectric material adsorption capacity of 10% to 40%; then place electrodes on the fiber substrate On the upper and lower surfaces, a fiber-based self-generating layer is obtained;

[0034]S3. Add the photothermal nanoparticles into the viscose solution containing the binding material, and mix uniformly to obtain a colloidal photothermal material; then uniformly coat the colloidal photothermal material on the fiber-based self- After the upper surface of the power generation layer is dried, the colloidal photothermal material forms a photothermal film on the upper surface to obtain a ...

Embodiment 1

[0045] This embodiment provides a method for preparing a high-efficiency fiber-based thermoelectric energy supply material, including the following steps:

[0046] S1. Add dimethyl sulfoxide and carbon nanotubes to the aqueous solution of PEDOT:PSS, and ultrasonically treat for 1 hour to mix them uniformly to obtain a thermoelectric composite solution. In the thermoelectric composite solution, the volume fraction of dimethyl sulfoxide is 5%, and the mass fraction of carbon nanotubes is 2%.

[0047] S2. Use a three-dimensional fabric (10mm×10mm×3mm) with a hollow heat-insulating layer inside as a fiber substrate, immerse it in the thermoelectric composite solution prepared in step S1, take it out after ultrasonic treatment for 2 hours, and dry it at 130° C. for 15 minutes. Then it was immersed in ethylene glycol solution for 2 hours, and after taking it out, it was dried in vacuum at 130° C. for 5 minutes to obtain a fiber substrate with a thermoelectric material adsorption cap...

Embodiment 2～7 and comparative example 1～2

[0050] Examples 2 to 7 respectively provide a method for preparing a high-efficiency fiber-based thermoelectric energy supply material. Compared with Example 1, the difference is that the content of photothermal nanoparticles in the colloidal photothermal material in step S3 or The thickness of the photothermal film and other steps are the same as in Example 1, and will not be repeated here. The content of photothermal nanoparticles and the thickness of the photothermal film corresponding to each embodiment are shown in Table 1.

[0051] Comparative Examples 1 and 2 respectively provide a fiber-based thermoelectric energy supply material. Compared with Example 1, the difference is that no photothermal nanoparticles are added in Step S3 of Comparative Example 1; while in Step S3 of Comparative Example 2 Photothermal nanoparticles with a mass fraction of 3.5% were added to form a photothermal film with a thickness of 200 μm; the remaining steps of Comparative Examples 1-2 were c...

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Abstract

The invention provides an efficient fiber-based thermoelectric energy supply material and a preparation method thereof. The efficient fiber-based thermoelectric energy supply material comprises a fiber-based self-generating layer and a photo-thermal film arranged on an upper surface of the fiber-based self-generating layer, wherein the fiber-based self-generating layer is prepared by dipping the fiber base material in the thermoelectric solution and then arranging the electrodes on the upper surface and the lower surface of the dipped and dried fiber base material; and a colloidal photo-thermal material formed by mixing photo-thermal nanoparticles and a viscose solution is coated on the upper surface of the fiber-based self-generating layer to form the photo-thermal film. The material is advantaged in that the temperature of the upper surface of the fiber-based self-power-generation layer is increased through molecular thermal motion generated after the photo-thermal film absorbs solarrays and infrared rays emitted by a human body, a temperature difference is formed between the fiber-based self-power-generation layer and the lower surface of the fiber-based self-power-generation layer, the thermoelectric material is driven to generate voltage, and the self-power-generation function is achieved; and the efficient fiber-based thermoelectric energy supply material is excellent inthermoelectric performance, high in power generation efficiency and good in flexibility, and has relatively high application value.

Description

technical field [0001] The invention relates to the technical field of thermoelectric energy supply materials, in particular to a high-efficiency fiber-based thermoelectric energy supply material and a preparation method thereof. Background technique [0002] Thermoelectric material is a functional material that can realize mutual conversion of electric energy and thermal energy by using the Seebeck effect. It has no noise, no pollution, stable performance and long service life during its use, and has a wide range of application prospects. In recent years, with the acceleration of the global industrialization process, the consumption of energy continues to increase, the energy shortage crisis and environmental pollution problems are becoming more and more serious, thermoelectric materials as a renewable green energy have received widespread attention. How to use thermoelectric materials for efficient energy supply is the focus of current research. [0003] However, traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/02H01L35/34D06M15/37D06M15/233D06M11/74D06M13/148D06M15/55H10N10/80H10N10/01
CPCD06M15/37D06M15/233D06M11/74D06M13/148D06M15/55H10N10/80H10N10/01
Inventor 李沐芳王栋陈佳鑫梅涛钟卫兵卿星陆莹
Owner WUHAN TEXTILE UNIV
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