Investigation of phononic and electronic properties of tetrahedrites and development of high-performance thermoelectric minerals
| Project/Area Number |
26820296
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | Kyushu University (2016)
Hiroshima University (2014-2015) |
|---|
Principal Investigator |
|
|---|
| Research Collaborator |
TAKABATAKE Toshiro 広島大学
UMEO Kazunori 広島大学
OHTA Michihiro 産業技術総合研究所
NISHIBORI Eiji 筑波大学
LEE Chul-Ho 産業技術総合研究所
SUZUKI Takashi 広島大学
ISHII Isao 広島大学
TOU Hideki 神戸大学
SATO Hitoshi 広島大学
KUROKI Kazuhiko 大阪大学
USUI Hidetomo 大阪大学
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
|---|
| Keywords | 熱電変換材料 / 硫化銅鉱物 / テトラヘドライト / コルーサイト / チオスピネル / ラットリング / 金属ー半導体転移 / 熱電変換 / 熱電物性 / 相転移 / テトラへドライト |
|---|
| Outline of Final Research Achievements |
Copper-based minerals, tetrahedrites, have attracted much interest due to their good thermoelectric properties, glass-like thermal conductivity, and metal-semiconductor transition (MST) occurring at 85 K. In this work, transport and thermal properties, and crystal and phonon structures of tetrahedrites have been investigated. It was revealed that the low-energy and anharmonic vibration (rattling) of copper atom is responsible for the glass-like thermal conductivity and the MST. Furthermore, thermoelectric performance of tetrahedrite was improved by the substitutions of germanium and tin for copper.
Attempts to discover high-performance "thermoelectric minerals" have been made. It was found that copper-based minerals, colusites, and mineral-related compounds, thiospinels, respectively exhibit high dimensionless figures of merit at 660K.
|
Report
(4 results)
Research Products
(47 results)
-
-
-
-
-
-
-
-
[Journal Article] Elastic Softening in the Tetrahedrite Cu12Sb4S132015
Author(s)
Takashi Suzuki, Hiroki Goto, Isao Ishii, Yoshihito Noguchi, Shuhei Kamikawa, Koichiro Suekuni, Hiromi I. Tanaka, Toshiro Takabatake
-
Journal Title
Physics Procedia
Volume: Volume 75
Pages: 443-446
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] 光電子分光・吸収分光による硫化銅鉱物Cu12Sb4S13の金属半導体転移の研究2016
Author(s)
長崎俊樹, 佐藤仁, 田中博己, 末國晃一郎, Awabaikeli Rousuli, 中村将吾, 仲武昌史, Galif Kutluk, 沢田正博, 三村功次郎, 安斎太陽, 市木勝也, 上田茂典, 島田賢也, 高畠敏郎, 生天目博文, 谷口雅樹
Organizer
日本物理学会第71回年次大会 21aBN-1
Place of Presentation
東北学院大学 泉キャンパス
Year and Date
2016-03-19
Related Report
-
[Presentation] Cu 2p-1s X線発光分光による硫化銅鉱物Cu12Sb4S13の金属半導体転移の研究2016
Author(s)
佐藤仁, 長崎俊樹, 田中博己, 末國晃一郎, Awabaikeli Rousuli, 中村将吾, 河村直己, 鄭旭光, 藤井武則, 高畠敏郎, 生天目博文, 谷口雅樹
Organizer
日本物理学会第71回年次大会 21pPSA-10
Place of Presentation
東北学院大学 泉キャンパス
Year and Date
2016-03-19
Related Report
-
-
-
-
-
-
-
-
[Presentation] 光電子分光・吸収分光によるCu12Sb4S13の電子状態の研究2015
Author(s)
長崎俊樹, 佐藤仁, 田中博己, 末國晃一郎, A. Rousuli, 仲武昌史, G. Kutluk, 沢田正博, 高畠敏郎, 生天目博文, 谷口雅樹
Organizer
日本物理学会2015年秋季大会 19aPS-94
Place of Presentation
関西大学 千里山キャンパス
Year and Date
2015-09-16
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
