TOP > 外国特許検索 > THERMOELECTRIC MATERIAL, METHOD FOR PRODUCING SAME AND THERMOELECTRIC POWER GENERATION MODULE USING SAME

THERMOELECTRIC MATERIAL, METHOD FOR PRODUCING SAME AND THERMOELECTRIC POWER GENERATION MODULE USING SAME 新技術説明会

外国特許コード F190009823
掲載日 2019年6月18日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2018JP032031
国際公開番号 WO 2019044931
国際出願日 平成30年8月29日(2018.8.29)
国際公開日 平成31年3月7日(2019.3.7)
優先権データ
  • 特願2017-166286 (2017.8.31) JP
  • 特願2017-213401 (2017.11.6) JP
発明の名称 (英語) THERMOELECTRIC MATERIAL, METHOD FOR PRODUCING SAME AND THERMOELECTRIC POWER GENERATION MODULE USING SAME 新技術説明会
発明の概要(英語) The present invention provides: a thermoelectric material which is mainly composed of an Al-Fe-Si system intermetallic compound and exhibits thermoelectric effects over the temperature range from room temperature to 600°C, and which can be p-type or n-type by means of composition control; a method for producing this thermoelectric material; and a thermoelectric power generation module. A thermoelectric material according to the present invention comprises, as the main phase, a phase which contains at least Al, Fe and Si and is expressed as Al2Fe3Si3, while being represented by general formula Al12+p-qFe38.5+3qSi49.5-p-2q (wherein p satisfies 0 ≤ p ≤ 16.5, and q satisfies -0.34 ≤ q ≤ 0.34).
従来技術、競合技術の概要(英語) BACKGROUND ART
Especially in the world in which the field energy even in Japan, about 3/4 of the primary supply energy is discarded as heat energy and the current situation, the exhaust heat recovery to establish technology deters their widespread use and has been desired. Under such a situation, the thermoelectric generation module, and to recover heat energy can be converted directly into electrical energy are attracting attention as a solid.
Recently, such a thermoelectric power module employed as a thermoelectric material, a low-cost and harmless is composed of only the elements, Al-Fe-Si intermetallic compound of ternary system has been proposed (for example, see Non-Patent Document 1). Here, the thermoelectric material is, in general, thermal and electrical energy is converted into a solid material has a characteristic to each other and, heating, and the generation of the temperature gradient in the cooling device, the generation of electrical energy from the waste heat of the material to be used for. Then, using such a material, can be converted to heat and power elements are formed. That is, 2 different types of such materials (for example, metal or semiconductor) junction, give rise to the temperature difference between the both ends of the electromotive force is generated, this is referred to as the Seebeck effect. On the other hand, different kinds of such a material 2 (for example, metal or semiconductor) junction current flows, heat is transferred to the other one is made of metal, which is referred to as the Peltier effect. Therefore, the thermoelectric material is, as to have such a function, unlike a simple material, thermoelectric material 1 as one of said accounts in the art. According to Non-Patent Document 1, is Al2Fe3Si3, using first-principles calculation based on the theoretical prediction, the carrier concentration of the p-type and n-type to adjust the thermoelectric characteristics of the reports can be controlled. However, p-type and n-type thermoelectric characteristics of the thermoelectric material exhibits a specific composition is not yet in the determination of the range.
On the other hand, with respect to the stoichiometric composition of Al2Fe3Si3 and 6at % Al by the composition of a rich, single-phase synthesis of Al2Fe3Si3 is reported as successful (for example, see Non-Patent Document 2). Is Al2Fe3Si3, Al-Fe-Si ternary system according to the state, in relatively wide range are known to exist, the non-patent document 2, Al26Fe37Si37 and Al2Fe3Si3 by the composition of the single-phase synthesis was successful. Non-Patent Document 2 is, Al26Fe37Si37 is obtained indicating the thermoelectric characteristics of the p-type are reported, further improvements in properties and practical use, n-type thermoelectric material can also be obtained.
Is equal to or less than 200°C occupies the majority of the heat is not be used, such a so-called poor heat can be recovered in a suitable, low-cost and harmless element is composed of only the desirable to develop a thermoelectric material.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NATIONAL INSTITUTE FOR MATERIALS SCIENCE
  • 発明者(英語)
  • TAKAGIWA, Yoshiki
国際特許分類(IPC)
参考情報 (研究プロジェクト等) Thermoelectric Materials Group,Center for Green Research on Energy and Environmental Materials
特許についてのご質問及びご相談等については、公開特許番号、ご質問内容・ご相談内容等、お名前、会社名、ご連絡先(電話番号、FAX番号、メールアドレス)をご記入の上、下記までご連絡ください。

PAGE TOP

close
close
close
close
close
close