Phonon scattering material, nanocomposite thermoelectric material, and method of producing the same

Patent metadata

Field	Value
Publication number	US-9728700-B2
Application number	US-201514668428-A
Country	US
Kind code	B2
Filing date	Mar 25, 2015
Priority date	Mar 28, 2014
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

Provided is a compound which is mixed with a thermoelectric conversion material matrix as a phonon scattering material. The compound is represented by the following formula:

(In the above formula, G 1 represents a functional group capable of binding to the thermoelectric conversion material matrix; G 2 independently represents G 1 or CH 3 ; 0≦m≦5; 0≦m′≦5; 6≦n≦1000; and 1/1000<(the number of G 1 /n)≦1).

First claim

What is claimed is:

1. A nanocomposite thermoelectric material comprising:
a thermoelectric conversion material bulk body; and
compounds dispersed in the nanocomposite thermoelectric material as a phonon scattering material, wherein
the compounds are represented by the following formula:

wherein:
G 1 represents a functional group selected from the group consisting of a mercapto group, a carboxyl group, an amino group, an epoxy group, a styryl group, a methacrvl group, an acryl group, an isocyanurate group. a ureido group, a sulfide group, an isocyanate group, and mixtures thereof;
G 2 independently represents G 1 or CH 3 ;
0≦m≦5;
0≦m′≦5;
6≦n≦1000; and
1/1000<(the number of G 1 /n)≦1.

2. The nanocomposite thermoelectric material according to claim 1 , wherein a volume fraction of the compounds is 0.1 vol % to 20 vol %.

3. A method of producing a nanocomposite thermoelectric material comprising:
mixing a reducing agent with a solution of a salt of a source material of a thermoelectric conversion material to form particles of constituent elements of the thermoelectric conversion material;
mixing a compound with a slurry including the particles of the constituent elements of the thermoelectric conversion material, wherein the compound is represented by the following formula:

wherein:
G 1 represents a functional group selected from the group consisting of a mercapto group, a carboxyl group, an amino group, an epoxy group, a styryl group, a methacryl group, an acryl group, an isocyanurate group, a ureido group, a sulfide group, an isocyanate group, and mixtures thereof,
G 2 independently represents G 1 or CH 3 ,
0≦m≦5,
0≦m′≦5,
6≦n≦1000, and
1/1000<(the number of G 1 /n)≦1;

stirring and aging this mixture; and
performing a hydrothermal treatment on the mixture.

Assignees

• Toyota Motor Co Ltd
• Admatechs Company Ltd

Inventors

• Murai Junya
• Kogure Tomonari
• Kawai Youichiro
• Kataoka Tomoharu
• Okawauchi Yoshinori

Classifications

• H01L35/24 Primary

  Electricity · mapped topic

• C08G77/28

  sulfur-containing groups · CPC title

• C08K3/08 Primary

  Metals · CPC title

• C08L83/08

  containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen · CPC title

• H10N10/856 Primary

  comprising organic compositions · CPC title