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Preparation methods for thermoelectric colloid material and thermoelectric device, and product

A thermoelectric device and colloidal material technology, which is applied in the manufacture/processing of thermoelectric devices, thermoelectric devices, and thermoelectric device junction lead wire materials, etc., can solve the problems of difficult encapsulation and integration of thermoelectrochemical devices, and achieve the effect of easy encapsulation

Inactive Publication Date: 2017-01-04
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a preparation method and product of thermoelectric colloidal materials and devices. technical problem

Method used

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  • Preparation methods for thermoelectric colloid material and thermoelectric device, and product
  • Preparation methods for thermoelectric colloid material and thermoelectric device, and product
  • Preparation methods for thermoelectric colloid material and thermoelectric device, and product

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The method for preparing thermoelectric colloid provided in Example 1 includes the following steps:

[0034] (1) Dissolve 4g of polymer powder in 40mL of water at 80°C to obtain a clear polymer solution;

[0035] (2) When the above polymer solution is clarified, pour 10mL of 0.1M FeCl at a rate of 0.1mL / s 2 / FeCl 3 (containing 1mL HCl, to prevent hydrolysis) was slowly added to the above clear polymer solution, and stirred evenly at a stirring speed of 200 rpm to obtain PVA-FeCl 2 / FeCl 3 colloid;

[0036] (3) The above-mentioned PVA-FeCl2 / FeCl3 colloid is solidified by a mold to make a cylindrical colloid with a diameter of 3 mm and a thickness of 1 mm.

[0037] The thermoelectric colloid prepared in Example 1 is encapsulated between two chromium-gold electrodes by polydimethylsiloxane (PDMS) to obtain a thermoelectric device; wherein, the chromium-gold electrode is plated on a PI (polyimide, polyimide) film superior.

[0038] figure 1 Shown, is the PVA-FeCl tha...

Embodiment 2

[0040] The method for preparing thermoelectric colloid provided in Example 2 includes the following steps:

[0041](1) Dissolve 4g of polyvinyl alcohol in 400mL of water at 85°C to obtain a polymer solution;

[0042] (2) When the above polymer solution is clarified, 10mL of 0.1M K at a speed of 0.07mL / s 4 Fe(CN) 6 / K 3 Fe(CN) 6 Slowly add to the clear polymer solution, stir at a stirring speed of 300 rpm to dissolve it evenly, and obtain PVA-K 4 Fe(CN) 6 / K 3 Fe(CN) 6 colloid;

[0043] (3) The above-mentioned PVA-K is molded into 4 Fe(CN) 6 / K 3 Fe(CN) 6 The colloid is solidified to make a cylindrical colloid with a diameter of 3mm and a thickness of 1mm;

[0044] The thermoelectric colloid prepared in Example 2 was encapsulated between two chrome-gold electrodes with polydimethylsiloxane (PDMS) to obtain a thermoelectric device; wherein, the chrome-gold electrodes were plated on the PI film.

[0045] Utilize the prepared PVA-K of the preparation method of embodim...

Embodiment 3

[0048] In order to further improve the thermoelectric output performance of the thermoelectric device, increase the output voltage and current, the PVA-FeCl prepared in Example 1 2 / FeCl 3 PVA-K prepared by thermoelectric device and embodiment 2 4 Fe(CN) 6 / K 3 Fe(CN) 6 Thermoelectric devices perform as Figure 4 The integration process shown includes the following steps:

[0049] (1) Depositing cross-chromium-gold electrodes on the PI flexible substrate;

[0050] (2) Arrange 59 PVA-FeCl in sequence on the cross chrome-gold electrodes 2 / FeCl 3 Colloidal cylinder and 59 PVA-K 4 Fe(CN) 6 / K 3 Fe(CN) 6 Colloidal cylinder, get middleware;

[0051] (3) Encapsulate the surrounding of the above middleware with PDMS to obtain a wearable flexible thermoelectric device;

[0052] The wearable flexible thermoelectric device prepared by packaging in Example 3 can directly convert the heat energy of the human body into electrical energy. The schematic diagram of its thermoelec...

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Abstract

The invention discloses preparation methods for a thermoelectric colloid material and a thermoelectric device, and a product. After a polymer solution is mutually mixed with a redox electrolyte, a product is subjected to curing process to prepare the thermoelectric colloid; the thermoelectric colloid regulates and controls a thermoelectric-chemical Seebeck coefficient and thermoelectric output performance by changing the redox electrolyte; the thermoelectric colloid has flexible and tensile characteristics, so that the thermoelectric colloid can be prepared into a required solid-state shape through a mould; the solid-state thermoelectric colloid is applicable to large-area packaging and integrating; the thermoelectric device is prepared by packaging and integrating the thermoelectric colloid and electrodes; and by adoption of the thermoelectric device, low-dimension heat energy can be effectively converted into electric energy, so that the thermoelectric device has wide application prospect in flexible electronic devices and wearable equipment.

Description

technical field [0001] The invention belongs to the technical field of new energy, and more specifically relates to a preparation method and product of a thermoelectric colloid material and device. Background technique [0002] With the development of wearable electronic devices and electronic skin, their energy supply has gradually attracted people's attention. In many self-driven energy supply systems, thermal energy widely exists in the environment and industrial production, especially the thermal energy between the human body and the environment, which can be directly converted into electrical energy to power wearable devices. [0003] The thermoelectrochemical Seebeck coefficients of traditional semiconductor and polymer thermoelectric materials are very small, and these two types of materials have poor flexibility, high cost, and cumbersome preparation process; these factors severely limit their wide application. The thermoelectric conversion device in the prior art c...

Claims

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Application Information

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IPC IPC(8): H01L35/34H01L35/24H01L35/32
CPCH10N10/856H10N19/101H10N10/01
Inventor 周军刘抗杨培华
Owner HUAZHONG UNIV OF SCI & TECH
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