N-type thermoelectric conversion layer, thermoelectric conversion element, and composition for forming N-type thermoelectric conversion layer

Patent metadata

Field	Value
Publication number	US-10707398-B2
Application number	US-201816009509-A
Country	US
Kind code	B2
Filing date	Jun 15, 2018
Priority date	Dec 18, 2015
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

An object of the present invention is to provide an n-type thermoelectric conversion layer, which has a high power factor and exhibits excellent performance stability, a thermoelectric conversion element including the n-type thermoelectric conversion layer, and a composition for forming an n-type thermoelectric conversion layer used in the n-type thermoelectric conversion layer. The n-type thermoelectric conversion layer of the present invention contains carbon nanotubes and an amine compound which is represented by General Formula (1) or (2) and has a C log P value of 2.0 to 8.2.

First claim

What is claimed is:

1. An n-type thermoelectric conversion layer comprising:
carbon nanotubes; and
an amine compound which is represented by General Formula (1) or (2) and has a C log P value of 2.0 to 8.2,

in General Formulae (1) and (2),
X represents a linear or branched unsubstituted alkyl group wherein the number of carbon atoms in the alkyl group is 1 to 30,
R represents a hydrogen atom or an alkyl group which may have a substituent wherein the number of carbon atoms in the alkyl group is 1 to 10,
m represents an integer of 1 to 3, in a case where m is an integer equal to or greater than 2, a plurality of X's may be the same as or different from each other, n represents an integer of 0 to 2, in a case where n is an integer equal to or greater than 2, a plurality of R's may be the same as or different from each other and may form a ring by being bonded to each other, and m and n satisfy a relation equation of m+n=3.

2. The n-type thermoelectric conversion layer according to claim 1 ,
wherein the amine compound is represented by General Formula (1), and
m in General Formula (1) is 1.

3. The n-type thermoelectric conversion layer according to claim 1 ,
wherein a boiling point of the amine compound is equal to or higher than 200° C.

4. A thermoelectric conversion element comprising:
the n-type thermoelectric conversion layer according to claim 1 .

5. The thermoelectric conversion element according to claim 4 , further comprising:
a p-type thermoelectric conversion layer electrically connected to the n-type thermoelectric conversion layer,
wherein the p-type thermoelectric conversion layer contains carbon nanotubes.

6. A composition for forming an n-type thermoelectric conversion layer, comprising:
carbon nanotubes; and
an amine compound which has a C log P value of 2.0 to 8.2 and is represented by General Formula (1) or (2),

in General Formulae (1) and (2),
X represents a linear or branched unsubstituted alkyl group wherein the number of carbon atoms in the alkyl group is 1 to 30,
R represents a hydrogen atom or an alkyl group which may have a substituent wherein the number of carbon atoms in the alkyl group is 1 to 10,
m represents an integer of 1 to 3, in a case where m is an integer equal to or greater than 2, a plurality of X's may be the same as or different from each other, n represents an integer of 0 to 2, in a case where n is an integer equal to or greater than 2, a plurality of R's may be the same as or different from each other and may form a ring by being bonded to each other, and m and n satisfy a relation equation of m+n=3.

7. The n-type thermoelectric conversion layer according to claim 2 ,
wherein a boiling point of the amine compound is equal to or higher than 200° C.

8. A thermoelectric conversion element comprising:
the n-type thermoelectric conversion layer according to claim 2 .

9. A thermoelectric conversion element comprising:
the n-type thermoelectric conversion layer according to claim 3 .

10. A thermoelectric conversion element comprising:
the n-type thermoelectric conversion layer according to claim 7 .

Assignees

• Fujifilm Corp

Inventors

• Kanazawa Yoshinori
• Nagata Yuzo
• Sugiura Hiroki
• Hayashi Naoyuki
• Nomura Kimiatsu

Classifications

• C07C215/12

  the nitrogen atom of the amino group being further bound to hydrocarbon groups substituted by hydroxy groups · CPC title

• C07C291/04

  containing amino-oxide bonds · CPC title

• C07C211/08

  containing alkyl groups having a different number of carbon atoms · CPC title

• C07C211/07

  containing one, two or three alkyl groups, each having the same number of carbon atoms in excess of three · CPC title

• C07C215/08

  with only one hydroxy group and one amino group bound to the carbon skeleton · CPC title