Fabrication of high performance thermoelectric devices using incommensurate chimney ladder compounds

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289222
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tohoku University
• Principal Investigator: Miyazaki Yuzuru 東北大学, 工学(系)研究科(研究院), 教授 (40261606)
• Co-Investigator(Kenkyū-buntansha): HAYASHI Kei 東北大学, 大学院工学研究科, 准教授 (70360625) ; TAKAMATSU Tomohisa 東北大学, 大学院工学研究科, 助教 (60708428)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 非整合化合物 / 廃熱利用 / 熱電変換 / チムニーラダー型化合物 / 変調構造 / 熱電発電モジュール

Outline of Final Research Achievements

Higher manganese silicide-based chimney-ladder compounds have been prepared and detailed crystal structure of four new phases has been determined. Metallic composition to realize potential thermoelectric (TE) properties has been investigated and the best p-type performance has been achieved for a lightly vanadium-substituted samples. A 3cm x 3cm size TE module has been fabricated and its power generation has been measured under a temperature difference of 400 K. The highest output power of 1.3 W has been recorded, which corresponds to the power density of 1.25 kW/m2.

Free Research Field

無機固体化学