Development of a new thermoelectric nanofiller for flexible thermoelectric devices with high performance

• Project/Area Number: 25820363
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Material processing/Microstructural control engineering
• Research Institution: Tohoku University
• Principal Investigator: Kikuchi Keiko 東北大学, 工学研究科, 助教 (80361137)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: カーボンナノチューブ / 熱電変換材料

Outline of Final Research Achievements

Magnesium silicide (Mg2Si) / carbon nanotube (CNT) thermoelectric nanofillers for use as a flexible thermoelectric material were successfully synthesized through the combined processes of the (1) sol-gel method, (2) magnesiothermic reduction, and (3) liquid-solid phase reaction. In the resulting product, each CNT was coated with Mg2Si which was an approximately 60 nm-thick single crystal. The synthesized Mg2Si/CNT thermoelectric nanofillers exhibited n-type thermoelectric behavior．

Research Products

• [Presentation] Mg2Si/カーボンナノチューブ複合ナノファイバーの合成と熱電変換材料への応用 (2016)
  • Author(s): 菊池圭子, 野村直之, 川崎亮
  • Organizer: 粉体粉末冶金協会平成28年度秋季大会
  • Place of Presentation: 東北大学 (仙台市)
  • Year and Date: 2016-11-09
  • Invited
• [Presentation] Synthesis of n-type Mg2Si/CNT thermoelectric nanofibers (2016)
  • Author(s): Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki
  • Organizer: 9th Pacific Rim International Conference on Advanced Materials and Processing
  • Place of Presentation: Kyoto International Conference Center (Kyoto, Japan)
  • Year and Date: 2016-08-01
  • Int'l Joint Research
• [Presentation] Mg2Si/カーボンナノチューブ複合ナノファイバーの合成と熱電特性評価 (2016)
  • Author(s): 菊池圭子, 山本晃大, 野村直之, 川崎亮
  • Organizer: 粉体粉末冶金協会平成28年度春季大会
  • Place of Presentation: 京都工芸繊維大学 (京都市)
  • Year and Date: 2016-05-24
• [Presentation] Mg2Si/カーボンナノチューブ複合ナノフィラーの作製と評価 (2015)
  • Author(s): 山本 晃大，菊池 圭子，野村 直之，川崎 亮
  • Organizer: 粉体粉末冶金協会平成27年度秋季大会
  • Place of Presentation: 京都大学百周年時計台記念館, 京都府京都市
  • Year and Date: 2015-11-11
• [Presentation] Mg2Si/カーボンナノチューブ複合ナノファイバーの合成 (2015)
  • Author(s): 菊池 圭子，山本 晃大，野村 直之，川崎 亮
  • Organizer: 第12回 日本熱電学会学術講演会
  • Place of Presentation: 九州大学筑紫地区総合研究棟, 福岡県春日市
  • Year and Date: 2015-09-07
• [Presentation] フレキシブル熱電素子の高効率化に向けたMg2Si被覆カーボンナノチューブの合成 (2014)
  • Author(s): 菊池圭子，山本晃大，野村直之，川崎亮
  • Organizer: 粉体粉末冶金協会 平成26年度秋季大会
  • Place of Presentation: 大阪大学コンベンションセンター
  • Year and Date: 2014-10-29 – 2014-10-31