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2023 年度 実施状況報告書

マルチスケールアプローチによるCoフリースクッテルダイトの熱電変換特性改善

研究課題

研究課題/領域番号 22KF0336
配分区分基金
研究機関芝浦工業大学

研究代表者

Mele Paolo  芝浦工業大学, 工学部, 教授 (70608504)

研究分担者 LATRONICO GIOVANNA  芝浦工業大学, SIT総合研究所, 外国人特別研究員
研究期間 (年度) 2023-03-08 – 2025-03-31
キーワードSkutterudites / Doping / Filler / SPS / Quenching / thermoelectrics / thin films
研究実績の概要

Three samples of skutterudite doped with Sn: Smy(FexNi1-x)4Sb11.5Sn0.5 were prepared with X= 0.45 (n-type semiconductor); X = 0.55 (n-p crossover semiconductor); X = 0.65 (p-type semiconductor). After grinding, sieving, and densification with SPS (500 ℃ for 7 minutes) the samples were sent to a collaborator at NIMS Tsukuba for the transport and thermoelectric characterization. Best samples presented an absolute value of Seebeck coefficient of 100 microV/K, a room temperature thermal conductivity of
1 W/m K, an electrical conductivity of 1000 S/cm and a max power factor of 1700 microW/m K^2 at 550K. These results will be summarized and submitted to an international peer-reviewed journal at the earliest convenience.
The double filled skutterudites of composition (Sm,Nd)y(FexNi1-x)4Sb12 and (Sm,La)y(FexNi1-x)4Sb12 were prepared in collaboration with the research group at University of Genoa and will be subjected to structural investigation by XRD before the densification and thermoelectric characterization. The addition of carbon-based nanodefects to Smy(FexNi1-x)4Sb12 skutterudites in the attempt of reducing the thermal conductivity was accomplished and a series of samples with increasing content of carbon was sent to collaborators at TTI (Nagoya) for SPS densification and thermoelectric characterization.
The fellow visited Dillard University (New Orleans, USA) for 1 month to prepare skutterudite thin films added with carbon nanoparticles

現在までの達成度 (区分)
現在までの達成度 (区分)

3: やや遅れている

理由

The synthesis of carbon-added Smy(FexNi1-x)4Sb12 bulk skutterudites was unexpectedly difficult due to the high reactivity of nanocarbon particles.
The custom made apparatus to measure the power factor in the laboratory is not working properly, so samples have to be sent to collaborators.
At Dillard University due to time constraints it was just possible to calibrate the multi-target, multi-laser PLD system.

今後の研究の推進方策

Future work will be focused to prepare the films of Smy(FexNi1-x)4Sb11.5Sn0.5 and of double-filled skutterudites using the SPS targets. In addition, bulk and thin-film modules of selected n- type and p-type skutterudites will be fabricated and their output power will be evaluated. The preparation of nanocomposite carbon-skutterudite thin films in collaboration with Dillard University will continue.

  • 研究成果

    (8件)

すべて 2024 2023

すべて 雑誌論文 (3件) (うち国際共著 3件、 査読あり 3件、 オープンアクセス 2件) 学会発表 (5件) (うち国際学会 2件、 招待講演 2件)

  • [雑誌論文] Polymer nanocomposite for protecting photovoltaic cells from solar ultraviolet in space2024

    • 著者名/発表者名
      Darwish Abdalla M.、Sarkisov Sergey S.、Graycol Brandon、Hribljan Anja、Patel Darayas N.、Fedoseyev Alex、Hui David、Mele Paolo、Latronico Giovanna、Cho Kyu、Giri Anit、Koplitz Brent
    • 雑誌名

      Nanotechnology Reviews

      巻: 13 ページ: 1-23

    • DOI

      10.1515/ntrev-2024-0013

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Fe(Se,Te) Thin Films Deposited through Pulsed Laser Ablation from Spark Plasma Sintered Targets2024

    • 著者名/発表者名
      Michela Iebole, Valeria Braccini, Cristina Bernini, Andrea Malagoli, Nicola Manca, Alberto Martinelli, Matteo Cialone, Marina Putti, Shiv J. Singh, Giovanna Latronico and Paolo Mele
    • 雑誌名

      Materials

      巻: 1 ページ: 1-10

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] A 200mV Operable On-Chip Temperature Sensor for IoT Devices Powered by Energy Harvesters with Ultra-Low Output Voltage2023

    • 著者名/発表者名
      Usami Kimiyoshi、Wang Songxiang、Nagai Kaito、Latronico Giovanna、Mele Paolo
    • 雑誌名

      IEEE

      巻: 1 ページ: 65-71

    • DOI

      10.1109/IoTaIS60147.2023.10346043

    • 査読あり / 国際共著
  • [学会発表] Effect of the Sn-doping on skutterudites belonging to the system Smy(FexNi1-x)4Sb122023

    • 著者名/発表者名
      Giovanna Latronico, Paolo Mele et al
    • 学会等名
      Advanced Materials Research Grand Meeting - MRM2023/IUMRS-ICA2023 Kyoto
    • 国際学会
  • [学会発表] Investigation of the Influence of the Sn-Doping on the Structure and Thermoelectric Properties of Co-free Skutterudites2023

    • 著者名/発表者名
      Giovanna Latronico, Paolo Mele et al
    • 学会等名
      Muroran Institute of Technology Rare Earth Workshop 2023 - REWS2023 (online)
    • 招待講演
  • [学会発表] Overview of Co-free skutterudites belonging to the system Smy(FexNi1-x)4Sb122023

    • 著者名/発表者名
      Giovanna Latronico
    • 学会等名
      Invited Seminar at Toyota Technological Institute (Nagoya)
    • 招待講演
  • [学会発表] Effects of the partial substitution of Sb with Sn in the system Smy(FexNi1-x)4Sb12-dSnd2023

    • 著者名/発表者名
      Giovanna Latronico, Paolo Mele et al
    • 学会等名
      20th Thermoelectric Society of Japan Annual Meeting - TSJ2023 (Kitakyushu)
  • [学会発表] PLD thin films of Co-free filled skutterudites: complete study from the annealing parameters refinement to the production of a working on-chip device2023

    • 著者名/発表者名
      Giovanna Latronico, Paolo Mele et al
    • 学会等名
      IUMRS-International Conference on Advanced Materials & 11th International Conference on Materials for Advanced Technologies - IUMRS-ICAM & ICMAT 2023 (Singapore)
    • 国際学会

URL: 

公開日: 2024-12-25  

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