Precisely-controlled synthesis of thermoelectric oxides via chemical solution process and enhancement of their performance by microstructural regulation
| Project/Area Number |
20560670
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Osaka University |
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Principal Investigator |
ITO Mikio Osaka University, 工学研究科, 准教授 (00294033)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 熱電変換材料 / 電気伝導性酸化物 / 錯体重合法 / 電気抵抗率 / 出力因子 / パルス通電焼結 / 粉末合成 / 緻密化温度 / 酸素欠損 / 低温迅速焼結 / ホットプレス / 常圧焼結 / 元素置換 / ゼーベック係数 / クエン酸錯体法 / 性能指数 |
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| Research Abstract |
The thermoelectric oxides and their composites were synthesized and their microstructures were controlled by using the chemical solution process, resulting in enhancement of thermoelectric performance and establishment of synthesis process at lower temperature and for shorter period of operating time. Especially in the case of the n-type SrTiO_3, mixing with TiB_2 was found to be quite effective for enhancing thermoelectric performance due to reduction in electrical resistivity and decreasing temperature of sintering by about 200K. As a result, the total synthesis process from powder preparation to final sintering at lower temperature and for shorter period of operating time was established by using the chemical solution process.
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Report
(4 results)
Research Products
(25 results)
