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Thermoelectric material and thermoelectric element including the same

A thermoelectric material and thermoelectric technology, applied in the direction of electrical components, thermoelectric devices, thermoelectric device node lead-out materials, etc., can solve the problems of being unusable, difficult to use in various ways, and not flexible.

Active Publication Date: 2015-07-29
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, conventional bulk-type thermoelectric elements are only used in limited fields such as expensive equipment or the aerospace industry
In addition, since conventional bulk type thermoelectric elements are not flexible, they cannot be used on surfaces with curvature
Thus, it is difficult to utilize it in various ways

Method used

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  • Thermoelectric material and thermoelectric element including the same
  • Thermoelectric material and thermoelectric element including the same
  • Thermoelectric material and thermoelectric element including the same

Examples

Experimental program
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Effect test

no. 1 approach

[0031] The thermoelectric material according to the first embodiment of the present invention may include: a thermoelectric powder including at least one element selected from Bi, Sb, Te, and Se; and a metal oxide powder having a cross section having a width and a thickness and has a length extending from the section. In particular, the metal oxide powder has a rod shape. A rod shape is defined as a structure with regular cross-section and length.

[0032] Specifically, the nanocrystalline thermoelectric material used for the thermoelectric element according to the first embodiment includes a metal oxide powder having a rod shape, and a thermoelectric powder; and the nanocrystalline thermoelectric material is realized in a bulk form. The thermoelectric material according to the first embodiment is configured such that thermoelectric powder is independently introduced into the interior of the bulk thermoelectric material, and particles of metal oxide powder having a rod shape ...

manufacture Embodiment 1

[0050] Production Example 1: Production of P-type Ingot

[0051] Each of Bi, Sb and Te samples were weighed to form Bi 0.5 Sb 1.5 Te 3 conditions, the sample was sealed in an inert atmosphere while contained in a quartz tube. Then, the sample contained in the quartz tube was placed in a furnace and melted at a temperature of 800° C. for 10 hours, and the melted sample was subjected to quenching to manufacture an ingot.

manufacture Embodiment 2

[0052] Production Example 2: Production of N-type Ingot 1

[0053] Each of Bi, Sb and Te samples were weighed to form Bi 2 Sb 2.70 Te 0.30 conditions, the sample was sealed in an inert atmosphere while contained in a quartz tube. Then, the sample contained in the quartz tube was placed in a furnace and melted at a temperature of 800° C. for 10 hours, and the melted sample was subjected to quenching to manufacture an ingot.

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Abstract

Provided is a thermoelectric material including metal oxide powder and thermoelectric powder. Thus, an internal filling rate is improved so that a Peltier effect can be maximized according to the increase of electrical conductivity and a Seebeck coefficient and the reduction of thermal conductivity, thereby enabling the improvement of the figure of merit (ZT) of a thermoelectric element.

Description

technical field [0001] Embodiments of the present invention relate to thermoelectric elements having improved thermoelectric efficiency and methods of manufacturing the same. Background technique [0002] The thermoelectric effect refers to a reversible, direct energy conversion between heat and electricity and is generated by electron and hole transport in the interior of a material. Such a thermoelectric effect is classified into a Peltier effect and a Seebeck effect, the Peltier effect is applied to the field of cooling using a temperature difference formed at both ends by an electric current applied from the outside, and The Seebeck effect is applied to the field of power generation using an electromotive force generated due to a temperature difference at both ends of a material. [0003] The biggest factor limiting the application of thermoelectric cooling and power generation is the low energy conversion efficiency of materials. The performance of thermoelectric mate...

Claims

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Application Information

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IPC IPC(8): H01L35/12H01L35/16H01L35/18
CPCH01L35/16H01L35/22C22C32/0015H01L35/00C22C32/00H01L35/18C22C1/0483C22C32/0089H10N10/855H10N10/852H10N10/00H10N10/853
Inventor 金相坤金淑贤申钟培元富云赵容祥李亨仪
Owner LG INNOTEK CO LTD
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