Flexible thermoelectric fiber based on woven P-N type structure and preparation method thereof

A P-N, textile fiber technology, applied in the manufacture/processing of thermoelectric devices, thermoelectric devices using only Peltier or Seebeck effect, fiber types, etc. Low cost, good breathability and durability

A P-N, textile fiber technology, applied in the manufacture/processing of thermoelectric devices, thermoelectric devices using only Peltier or Seebeck effect, fiber types, etc. Low cost, good breathability and durability

CN112086551APending Publication Date: 2020-12-15UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Flexible thermoelectric fiber based on woven P-N type structure and preparation method thereof
  • Flexible thermoelectric fiber based on woven P-N type structure and preparation method thereof
  • Flexible thermoelectric fiber based on woven P-N type structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1-Figure 4 As shown, a flexible thermoelectric fiber based on a braided P-N structure includes textile fibers, and the textile fibers have a sinusoidal structure, and the peaks or troughs of the sinusoidal structure include P-type thermoelectric regions 1 and N-type thermoelectric regions 3, so A conductive region 2 is provided at the junction of the P-type thermoelectric region 1 and the N-type thermoelectric region 3, and the conductive region 2 is located at the endpoints of the peaks and troughs of the sinusoidal structure.

[0043] The specific preparation method of the flexible thermoelectric fiber described in this embodiment includes the following steps:

[0044] S1. Prepare P-type thermoelectric solution and N-type thermoelectric paste respectively:

[0045] Add dimethyl sulfoxide to the PEDOT:PSS aqueous solution to prepare a P-type thermoelectric solution, and ultrasonically disperse the P-type thermoelectric solution for 30 minutes, and the ...

Embodiment 2

[0052] This example is based on Example 1, which is different from the example in that the specific preparation method of the flexible thermoelectric fiber specifically includes the following steps:

[0053] S1. Prepare P-type thermoelectric solution and N-type thermoelectric paste respectively:

[0054] Add dimethyl sulfoxide to the PEDOT:PSS aqueous solution to prepare a P-type thermoelectric solution, and ultrasonically disperse the P-type thermoelectric solution for 30 minutes. The ambient temperature of the ultrasonic dispersion is 25°C, and the mass fraction of PEDOT:PSS is 100wt %, and the particle size of PEDOT:PSS is 90nm~95nm;

[0055] Add bismuth selenide to polyvinylidene fluoride (PVDF) binder to form N-type thermoelectric paste;

[0056] S2. Soak polyester in deionized water and absolute ethanol in sequence, and perform ultrasonic cleaning for 5 minutes, the ambient temperature of ultrasonic cleaning is 25°C, and the number of cycles is 10;

[0057] S3. Wrap th...

Embodiment 3

[0061] This example is based on Example 1, which is different from the example in that the specific preparation method of the flexible thermoelectric fiber specifically includes the following steps:

[0062] S1. Prepare P-type thermoelectric solution and N-type thermoelectric paste respectively:

[0063] Add ethylene glycol to the PEDOT:PSS aqueous solution to prepare a P-type thermoelectric solution, and ultrasonically disperse the P-type thermoelectric solution for 30 minutes, and the temperature of the ultrasonic dispersion environment is 35°C, wherein the mass fraction of PEDOT:PSS is 100wt%. And the particle size of PEDOT:PSS is 95nm~100nm;

[0064] Add bismuth selenide to polyvinylidene fluoride (PVDF) binder to form N-type thermoelectric paste;

[0065] S2. Soak polyester in deionized water and absolute ethanol in sequence, and perform ultrasonic cleaning for 5 minutes, the ambient temperature of ultrasonic cleaning is 35°C, and the number of cycles is 5 times;

[006...

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Abstract

The invention discloses a flexible thermoelectric fiber based on a braided PN-type structure and a preparation method thereof. The flexible thermoelectric fiber comprises a textile fiber, the textilefiber is of a sine structure, and the wave crest or wave trough of the sine structure comprises a P-type thermoelectric region and an N-type thermoelectric region. A conductive region is arranged at the junction of the P-type thermoelectric region and the N-type thermoelectric region, and the conductive region is located at the endpoints of the wave crest and the wave trough of the sine structure,that is, the conductive region is located at the vertex of the wave crest and the lowest point of the wave trough. The preparation method for preparing the flexible thermoelectric fiber is simple, low in cost and easy for large-scale production; a thermoelectric structure and a braided structure are combined together, so the thermoelectric composite material has good flexibility, air permeabilityand durability, and has a wider application prospect.

Description

technical field [0001] The invention relates to the field of flexible thermoelectric sensor devices, in particular to a flexible thermoelectric fiber based on a braided P-N structure and a preparation method thereof. Background technique [0002] With the advent of the intelligent age, the combination of material science and micro-nano technology has triggered a revolution in the textile industry, and a large number of flexible wearable devices have emerged, whether it is used for the human body itself to enhance the perception of the real world or for machine realization. The ability of the human body to perceive the environment has put forward many new requirements for the current wearable devices. [0003] The thermoelectric effect is to use the movement of carriers inside the material to realize the mutual conversion between thermal energy and electric energy. The thermoelectric effect can be used to detect the energy intensity generated by the temperature of the human b...

Claims

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Application Information

Patent Timeline
15 Dec 2020
Publication
CN112086551A
IPC
H01L35/08; H01L35/16; H01L35/22; H01L35/24; H01L35/28; H01L35/34; D06M15/233; D06M15/37; D06M15/256; D06M11/83; D06M11/52; D06M101/06; D06M101/32; H10N10/817; H10N10/01; H10N10/10; H10N10/852; H10N10/855; H10N10/856
CPC
D06M15/233; D06M15/37; D06M15/256; D06M11/83; D06M11/52; D06M2101/06; D06M2101/32; H10N10/817
Inventors
张晓升; 冯涛