Development of n-type flexible thermoelectric material based on Mg2Si/CNT composite nanofibers
| Project/Area Number |
16K06790
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Material processing/Microstructural control engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
Kikuchi Keiko 東北大学, 工学研究科, 助教 (80361137)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 熱電変換材料 / カーボンナノチューブ |
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| Outline of Final Research Achievements |
Mg2Si/CNT thermoelectric nanofibers were successfully synthesized through the combined process of the colloidal process using silicon sub-micron powder and liquid-solid phase reaction. The synthesized Mg2Si coatings on CNTs showed less impurity and higher thermoelectric properties compared with those synthesized through our previous process. Moreover, thin-films made of Mg2Si/CNT composite nanofibers for use as a flexible thermoelectric material were successfully fabricated.
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| Academic Significance and Societal Importance of the Research Achievements |
高効率の熱電変換デバイスを実現するためにはp型とn型，両方の熱電変換材料が必要であるが，高温でも安定なn型のフレキシブル熱電変換材料はこれまで存在しなかった．本研究で開発したナノファイバーは軽量で希少金属など資源量の制限を受けないMg2SiとCNTの組み合わせであり，薄膜化が比較的容易であることから，将来的な実用化が大いに期待される．さらに本研究で開発したコロイドプロセスを用いたCNT複合ナノファイバー合成法は，多くの無機熱電変換材料へ応用が可能であり，今後，高温使用可能なフレキシブル熱電変換素子の実現に向けてCNT複合ナノファイバーの開発促進に貢献するものである．
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Report
(4 results)
Research Products
(8 results)
