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Preparation method of flexible paper-based thermoelectric generator

A thermoelectric generator, paper-based technology, which is applied in the manufacture/processing of thermoelectric devices, generators/motors, thermoelectric device components, etc., can solve the problems of thermoelectric materials with toxicity, large space occupation, and poor adhesion, etc. Achieve the effect of improving flexibility, facilitating secondary recycling, and good electrical conductivity

Pending Publication Date: 2021-08-24
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the publication number CN110265538A discloses a flexible thermoelectric generator and its preparation method and application system. Multiple thermoelectric crystal groups are formed on the surface of the flexible substrate to form a three-dimensional structure, and the fit is not high when worn on the human body. And take up a lot of space
And limited by the toxicity of the thermoelectric materials used, there are certain safety hazards

Method used

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  • Preparation method of flexible paper-based thermoelectric generator
  • Preparation method of flexible paper-based thermoelectric generator
  • Preparation method of flexible paper-based thermoelectric generator

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0031] Experimental example 1 Effect of different adhesives and dispersants on generator performance

[0032] Cellulose nanocrystals, nanocellulose, and bacterial cellulose were used as adhesives and dispersants, respectively, and the rest of the conditions were the same. Specific steps:

[0033] (1) Preparation of thermoelectric ink

[0034] 5 g of multi-walled carbon nanotubes were mixed with 5 g of cellulose nanocrystals, nanocellulose, and bacterial cellulose respectively, and the thermoelectric ink was obtained by ultrasonic dispersion at 600 W for 15 min.

[0035] (2) Printing of thermoelectric ink

[0036] The above thermoelectric ink was printed on paper through a 50-mesh screen, and then dried in an oven at 60°C for 15 minutes to obtain P-type thermoelectric paper.

[0037] (3) Modification of thermoelectric paper

[0038] Dilute the PEI solution with Mw 600 molecular weight with water to a 5% concentration modification solution, then drop cast it on P-type thermo...

experiment example 2

[0045] Effects of different ratios of multi-walled carbon nanotubes and nanocellulose on the performance of generators

[0046] (1) Preparation of thermoelectric ink

[0047] 5 g of multi-walled carbon nanotubes were mixed with 2.5 g, 5 g, and 10 g of nanocellulose respectively, and the thermoelectric ink was obtained by ultrasonic dispersion at 600 W for 15 min.

[0048] (2) Printing of thermoelectric ink

[0049] The above thermoelectric ink was printed on paper through a 50-mesh screen, and then dried in an oven at 60°C for 15 minutes to obtain P-type thermoelectric paper.

[0050] (3) Modification of thermoelectric paper

[0051] Dilute the PEI solution with Mw 600 molecular weight with water to a 5% concentration modification solution, then drop cast it on P-type thermoelectric paper, and react for 2 hours. Then carry out drying treatment under the same conditions in step (2) to obtain N-type thermoelectric paper.

[0052] (4) Printing of electrodes

[0053] Take the...

experiment example 3

[0057] Experimental Example 3 Effect of Modifier Concentration and Modification Time on Generator Performance

[0058] (1) Preparation of thermoelectric ink

[0059] 5 g of multi-walled carbon nanotubes and 5 g of nanocellulose were mixed, and the thermoelectric ink was obtained by ultrasonic dispersion at 600 W for 15 min.

[0060] (2) Printing of thermoelectric ink

[0061] The above thermoelectric ink was printed on paper through a 50-mesh screen, and then dried in an oven at 60°C for 15 minutes to obtain P-type thermoelectric paper.

[0062] (3) Modification of thermoelectric paper

[0063]Dilute the PEI solutions with molecular weights of Mw 600, 1200, and 1800 with water to a 5% modified solution, and then drop-cast them on P-type thermoelectric paper for 2 hours of reaction.

[0064] The PEI solution with Mw600 molecular weight was diluted with water to 1%, 5%, and 10% concentration of modifying solution, and then drop-cast on P-type thermoelectric paper, and reacted...

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Abstract

The invention discloses a preparation method of a flexible paper-based thermoelectric generator, according to the method, the generator is obtained by printing on paper, and the method is simple, easy and convenient to operate and suitable for industrial production. The used thermoelectric material, adhesive, dispersant and substrate are environment-friendly, and the prepared thermoelectric generator has flexibility and degradability, is very friendly to the environment and human body, and is convenient for secondary recovery. Meanwhile, environment-friendly materials are used and can be safely applied to the fields of human bodies, agricultural production and the like.

Description

technical field [0001] The invention belongs to the technical field of paper-based thermoelectric generators, and in particular relates to a preparation method of flexible paper-based thermoelectric generators. Background technique [0002] Thermoelectric generators based on the Seebeck effect can directly convert heat energy into electrical energy, because of its safety and environmental protection have been concerned and researched by all walks of life. However, most of the current commercialized thermoelectric generators use inorganic semiconductor materials, which are difficult to process while being toxic and difficult to degrade. As a result, the resulting generators cannot be bent and are difficult to apply to complex heat source surfaces. At the same time, the rapid development of wearable devices also makes researchers focus on the direction of human body functions. The Chinese invention patent with the publication number CN110265538A discloses a flexible thermoele...

Claims

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Application Information

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IPC IPC(8): H01L35/10H01L35/28H01L35/34B41M1/12B41M7/00H02N11/00
CPCB41M1/12B41M7/009H02N11/002H10N10/82H10N10/10H10N10/01
Inventor 韩文佳李鸿冰李霞丁其君姜亦飞杨硕
Owner QILU UNIV OF TECH