| Project/Area Number |
18H01816
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 28020:Nanostructural physics-related
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
柳 和宏 東京都立大学, 理学研究科, 教授 (30415757)
藤ヶ谷 剛彦 九州大学, 工学研究院, 教授 (30444863)
野々口 斐之 京都工芸繊維大学, 材料化学系, 講師 (50610656)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | カーボンナノチューブ / 熱電変換 |
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| Outline of Final Research Achievements |
In this project, in order to improve the thermoelectric (TE) performance of carbon nanotubes (CNTs), which are potential candidates for flexible and environmentally friendly TE materials, we achieved (1) a huge Seebeck coefficient over 1 mV/K, (2) n-type CNTs stable in air, and (3) a low thermal conductivity below 1 W/mK. In addition to the issues (1)-(3), we have developed the fully quantum-mechanical theory for TE effects, which is possible to apply strongly disordered systems such as variable range hopping transport.
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| Academic Significance and Societal Importance of the Research Achievements |
トリリオン・センサー社会の実現に向けて，フレキシビリティーや環境調和性などの付加価値を備えた熱電材料（温度差によって起電力を生み出す材料）の創出が求められている。そのような中，カーボンナノチューブ（CNT）は環境調和型のフレキシブル熱電材料として有望視されており，CNTの熱電性能を実用レベルまで向上できれば，機械的脆弱や有害性などの問題を抱える既存の熱電材料（Be-Te系材料など）の代替になり得るため，CNTの熱電研究の科学的価値と社会的インパクトは極めて大きい。
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