2010 Fiscal Year Final Research Report
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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| 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 |
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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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