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Creation of thermofluidic energy harvesting elements to surpass the solid-state thermoelectric energy conversion

Research Project

Project/Area Number 21K18693
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 19:Fluid engineering, thermal engineering, and related fields
Research InstitutionKyushu University

Principal Investigator

Li Qin-Yi  九州大学, 工学研究院, 准教授 (60792041)

Co-Investigator(Kenkyū-buntansha) 高橋 厚史  九州大学, 工学研究院, 教授 (10243924)
Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywordsナノチャネル / グラフェン / 発電素子 / カーボンナノチューブ / 熱流体発電素子
Outline of Research at the Start

本研究では、ナノスケールでの高精度計測技術に基づいて、1本のカーボンナノチューブにおける1~10nmオーダーの空間での熱流体による発電現象及び逆の電気浸透現象を定量的に解明する。異なる発電原理の相乗効果を探索し、現存する温度差発電技術の常識を塗り替える新学理の構築を目指して、ゼーベック効果による固体の熱電変換素子を超える「熱流体発電素子」を創出する。

Outline of Final Research Achievements

Throughout this project, we have developed an accurate method for measuring flow in nanochannels with depths ranging from tens to hundreds of nanometers. We have further elucidated the reciprocal relations between capillary filling and surface charge in graphene-coated nanochannels. We have also established efficient methods for filling various liquids into individual carbon nanotubes. These achievements pave the way for a complete understanding of the multi-physical phenomena involving flow, electric and thermal effects in nanoconfined spaces, as well as the creation of an electricity generator utilizing thermofluids.

Academic Significance and Societal Importance of the Research Achievements

本研究にて得られた成果は、ナノ空間における流れ、電気、熱的効果に関わる複雑な物理現象の完全な理解を促進し、熱工学および応用物理学の新たな展開に貢献した。また、「熱流体発電素子」の創出の可能性を示し、環境発電およびセンサへの応用は期待でき、脱炭素社会および高度な情報化社会の達成に貢献できる。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2022 2021

All Journal Article (7 results) (of which Peer Reviewed: 6 results) Presentation (3 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] Slip Flow on Graphene: Current Status and Perspective2022

    • Author(s)
      Chen Kuan-Ting、Li Qin-Yi、Takahashi Koji
    • Journal Title

      Journal of Thermal Science

      Volume: 31 Issue: 4 Pages: 1115-1134

    • DOI

      10.1007/s11630-022-1668-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermal resistance mapping along a single cup-stacked carbon nanotube with focused electron beam heating2022

    • Author(s)
      Li Dawei、Li Qin-Yi、Takahashi Koji
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 198 Pages: 123418-123418

    • DOI

      10.1016/j.ijheatmasstransfer.2022.123418

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Round Robin Study on the Thermal Conductivity/Diffusivity of a Gold Wire with a Diameter of 30 μm Tested via Five Measurement Methods2022

    • Author(s)
      Abe Ryo、Sekimoto Yuki、Saini Shirkant、Miyazaki Koji、Li Qinyi、Li Dawei、Takahashi Koji、Yagi Takashi、Nakamura Masakazu
    • Journal Title

      Journal of Thermal Science

      Volume: 31 Issue: 4 Pages: 1037-1051

    • DOI

      10.1007/s11630-022-1594-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Slip length measurement in rectangular graphene nanochannels with a 3D flow analysis2022

    • Author(s)
      Chen Kuan-Ting、Li Qin-Yi、Omori Takeshi、Yamaguchi Yasutaka、Ikuta Tatsuya、Takahashi Koji
    • Journal Title

      Carbon

      Volume: 189 Pages: 162-172

    • DOI

      10.1016/j.carbon.2021.12.048

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Concurrent thermal conductivity measurement and internal structure observation of individual one-dimensional materials using scanning transmission electron microscopy2022

    • Author(s)
      Li Dawei、Li Qin-Yi、Ikuta Tatsuya、Takahashi Koji
    • Journal Title

      Applied Physics Letters

      Volume: 120 Issue: 4 Pages: 043104-043104

    • DOI

      10.1063/5.0079153

    • NAID

      120007186387

    • Related Report
      2021 Research-status Report
  • [Journal Article] Thermally induced mass transfer between nanobubbles and micropancakes2021

    • Author(s)
      Kimura Ryota、Teshima Hideaki、Li Qin-Yi、Takahashi Koji
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 181 Pages: 122001-122001

    • DOI

      10.1016/j.ijheatmasstransfer.2021.122001

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Pinning in a Contact and Noncontact Manner: Direct Observation of a Three-Phase Contact Line Using Graphene Liquid Cells2021

    • Author(s)
      Hirokawa Sota、Teshima Hideaki、Solis-Fernandez Pablo、Ago Hiroki、Li Qin-Yi、Takahashi Koji
    • Journal Title

      Langmuir

      Volume: 37 Issue: 42 Pages: 12271-12277

    • DOI

      10.1021/acs.langmuir.1c01589

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] In-situ thermal measurement with electron microscopy2022

    • Author(s)
      Li Qin-Yi
    • Organizer
      The 13th Asian Thermophysical Properties Conference (ATPC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nanoscale Thermal and Fluid Characterization with Electron Microscopy2022

    • Author(s)
      Li Qin-Yi
    • Organizer
      2022 International Forum on High-end Equipment and Intelligent Manufacturing
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Controlling thermal conductivity of individual nanocarbon materials2021

    • Author(s)
      Li Qin-Yi
    • Organizer
      2021 International Forum on High-end Equipment and Intelligent Manufacturing
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-07-13   Modified: 2024-01-30  

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