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Thermoelectric conversion material, and thermoelectric conversion element prepared therewith

A technology of thermoelectric conversion and conductive materials, applied in electrical components, thermoelectric device junction lead-out materials, electric solid devices, etc. Effect

Pending Publication Date: 2021-08-06
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the thermoelectric conversion element of Patent Document 1, the polymer chain of the polymer dispersant hinders the interaction with CNT, and sufficient performance cannot be obtained.
In addition, in the thermoelectric conversion element of Patent Document 2, the electrical conductivity is as low as 10 -8 S / cm~10 -7 S / cm, as a thermoelectric conversion element, cannot obtain a practical value

Method used

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  • Thermoelectric conversion material, and thermoelectric conversion element prepared therewith
  • Thermoelectric conversion material, and thermoelectric conversion element prepared therewith
  • Thermoelectric conversion material, and thermoelectric conversion element prepared therewith

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0094] The thermoelectric conversion material of the present embodiment includes a conductive material (A) and an organic compound (B) having a small |(HOMO of the organic compound (B))-(HOMO of the conductive material (A))| (hereinafter also referred to as ΔHOMO). . Through this specific combination, high Seebeck coefficient and electrical conductivity can coexist, and excellent thermoelectric performance can be exerted. The reason for this is that holes (carriers) efficiently move from an organic compound having low thermal excitation energy to a conductive material, and the holes move in the conductive material, thereby realizing high Seebeck coefficient and conductivity.

[0095]

[0096] The conductive material (A) contributes to enhancement of conductivity. The conductivity can be improved by increasing the content of the conductive material (A).

[0097] The conductive material (A) is not particularly limited as long as it is a conductive material (carbon material, ...

no. 2 approach

[0368] All the thermoelectric conversion materials of this embodiment satisfy the following (1) to (3).

[0369] (1) 0<((HOMO of organic compound (B))-(HOMO of conductive material (A))×((HOMO of organic compound (C))-(HOMO of conductive material (A)))

[0370] (2) |(HOMO of organic compound (B))-(HOMO of conductive material (A))|<|(HOMO of organic compound (C))-(HOMO of conductive material (A))|

[0371] (3) The adsorptivity of the organic compound (B) to the conductive material (A) is greater than the adsorptivity of the organic compound (C) to the conductive material (A).

[0372] Through this specific combination, high Seebeck coefficient and electrical conductivity can coexist, and excellent thermoelectric performance can be exerted. The reason for this is that holes (carriers) efficiently move from an organic compound having low thermal excitation energy to a conductive material, and the holes move in the conductive material, thereby realizing high Seebeck coefficient an...

Embodiment

[0393] Hereinafter, the present invention will be described in more detail through experimental examples. In addition, hereinafter, "part" means "mass part", and "%" means "mass %". In addition, NMP represents N-methyl pyrrolidone (N-methyl pyrrolidone).

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Abstract

A thermoelectric conversion material includes a conductive material (A) and an organic compound (B) that are in a relationship satisfying the following formula (1): 0 eV <= |(HOMO of organic compound (B)) - (HOMO of conductive material (A))| <= 1.64 eV.

Description

technical field [0001] Embodiments of the present invention relate to a thermoelectric conversion material and a thermoelectric conversion element using the same. Background technique [0002] A thermoelectric conversion material capable of mutually converting thermal energy and electrical energy is used in a thermoelectric conversion element such as a thermoelectric power generation element or a Peltier element. A thermoelectric conversion element is an element that converts heat into electricity, and includes a combination of semiconductors or metals. Typical thermoelectric conversion elements are classified into only p-type semiconductors, only n-type semiconductors, or a combination of p-type semiconductors and n-type semiconductors. A thermoelectric conversion element utilizes the Seebeck effect in which electromotive force is generated when a semiconductor is heated to generate a temperature difference between both ends. In order to obtain a larger potential differen...

Claims

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Application Information

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IPC IPC(8): H01L35/24H01L35/22H01L51/00H01L51/30
CPCY02E10/549H10N10/855H10N10/856H10K85/20H10K85/221H10K85/623H10K85/615H10K85/636H10K85/633H10K85/657H10K85/6572
Inventor 岩田贯仓内启辅安藤类
Owner TOYO INK SC HOLD CO LTD
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