Thermoelectric material, thermoelectric conversion module using thermoelectric material, method for manufacturing same, and peltier element

一种热电材料、热电转换的技术，应用在热电器件的制造/处理、热电器件结点引出线材料、电气元件等方向，达到简化构成要件、增大发电量、实现功率因子的效果

Active Publication Date: 2020-02-21
NAT INST FOR MATERIALS SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although Non-Patent Document 5 shows that such a mixture is used for an anode electrode of an organic thin film solar cell, it is desired to develop further applications

Method used

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  • Thermoelectric material, thermoelectric conversion module using thermoelectric material, method for manufacturing same, and peltier element
  • Thermoelectric material, thermoelectric conversion module using thermoelectric material, method for manufacturing same, and peltier element
  • Thermoelectric material, thermoelectric conversion module using thermoelectric material, method for manufacturing same, and peltier element

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0056] In Embodiment 1, the thermoelectric material of the present invention and its manufacturing method will be described.

[0057] The thermoelectric material of the present invention contains a thermoelectric substance and a solvent, and has viscosity. Thereby, the above-mentioned effects are achieved. It is well known that thermoelectric materials have been advantageous as solids with high density of thermoelectric materials because of their conduction mechanism. However, the inventors of the present application overturned this technical common sense and found that by mixing with a solvent in a powder state, even in a liquid state. The thermoelectric performance can be maintained even in a viscous state.

[0058] It is worth noting that, as mentioned above, Non-Patent Document 5 discloses a mixture of PEDOT:PSS and EMIM:X, but does not disclose its thermoelectric properties at all. The inventor of the present application discovered thermoelectric properties for the first time...

Embodiment approach 2

[0089] In the second embodiment, a thermoelectric conversion module using the thermoelectric material of the present invention described in the first embodiment and a manufacturing method thereof will be described.

[0090] figure 1 It is a schematic diagram showing the thermoelectric conversion module of the present invention.

[0091] The thermoelectric conversion module 100 includes a plurality of p-type thermoelectric conversion elements 110 and a plurality of n-type thermoelectric conversion elements 120. Each of these p-type thermoelectric conversion elements 110 and n-type thermoelectric conversion elements 120 contains a viscous thermoelectric material. In this embodiment, the case where the viscous thermoelectric material contains the thermoelectric material described in Embodiment 1 is described, but the inventor of the present application discovered for the first time that a so-called liquid thermoelectric material having viscosity can be applied to a thermoelectric conv...

Embodiment 1

[0128] In Example 1, a thermoelectric material was produced, and viscoelastic properties and thermoelectric properties were evaluated. The thermoelectric material was an organic material TCNQ-TTF (density: 1.6 g / cm 3 ) And the ionic liquid EMIMOtf as a solvent mixed in various volume ratios.

[0129] Disperse TCNQ-TTF in IPA and pulverize by ball mill. The particle size of TCNQ-TTF after pulverization is in the range of 0.5 μm to 2 μm. TCNQ-TTF and EMIM Otf were mixed under the conditions shown in Table 1 to prepare samples 1-1 to 1-7.

[0130] Table 1

[0131]

[0132] Table 1: Manufacturing conditions of samples 1-1 to 1-7 in Example 1

[0133] Next, samples 1-1 to 1-7 from which IPA was removed were subjected to viscoelasticity evaluation. A viscoelasticity measuring device (manufactured by Anton Paar, model MCR301) was used for the evaluation. The results are shown in Table 2.

[0134] Next, the thermoelectric characteristics of samples 1-1 to 1-7 were evaluated. The evaluation...

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Abstract

The present invention provides a thermoelectric material which, when a thermoelectric conversion module is formed therefrom, reduces contact resistance with an electrode and will not be detached ; thethermoelectric conversion module using the thermoelectric material; a method for manufacturing same; and a Peltier element. A thermoelectric material according to the present invention contains a thermoelectric substance and a solvent, and the solvent has a vapor pressure of 0-1.5 Pa at 25 DEG C, has a storage elastic modulus G' in the range of 1*101 to 4*106 Pa, and has a loss elastic modulus G'in the range of 5 to 4*106 Pa.

Description

Technical field [0001] The present invention relates to a thermoelectric material, a thermoelectric conversion module using the thermoelectric material, a manufacturing method thereof, and a Peltier element. Background technique [0002] In the world, especially in my country, which has made progress in energy conservation, in terms of waste heat recovery, the current situation is that about 3 / 4 of the primary energy supplied is discarded as thermal energy. Under such circumstances, thermoelectric power generation elements are attracting attention as solid elements that can recover thermal energy and directly convert it into electrical energy. [0003] Because thermoelectric power generation elements are directly converted to electrical energy, they have the advantages of easy maintenance and scalability due to the absence of movable parts. Therefore, extensive material research has been conducted on thermoelectric semiconductors. [0004] Heat below 200°C forms the largest unused ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/24B82Y30/00B82Y40/00H01L35/22H01L35/26H01L35/34H02N11/00
CPCH02N11/00B82Y30/00B82Y40/00H10N10/857H10N10/856H10N10/855H10N10/01H10N10/17
Inventor 佐藤宗英森孝雄大塚雅二
Owner NAT INST FOR MATERIALS SCI
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