NAKAGAWA Tessui

写真a

Title

Associate Professor

Researcher Number(JSPS Kakenhi)

50647261

Homepage URL

https://sites.google.com/view/hyenelab/

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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Faculty of Science   Chemistry, Biology and Marine Science   Associate Professor  

  • Concurrently   University of the Ryukyus   Faculty of Engineering   Associate Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Engineering and Science   Chemistry, Biology and Marine Science   Associate Professor  

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University 【 display / non-display 】

  • 2000.04
    -
    2004.03

    Hiroshima University   Faculty of Science   Physics department   Graduated

  • 2000.04
    -
    2004.03

    Hiroshima University   Faculty of Science   Department of Physical Science   Graduated

  • 2004.04
    -
    2009.03

    Hiroshima University     Graduated

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Graduate School 【 display / non-display 】

  • 2004.04
    -
    2009.03

    Hiroshima University  Graduate School, Division of Integrated Science  Quantum Matter  Doctor's Course  Completed

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Academic degree 【 display / non-display 】

  • Hiroshima University -  Ph.D in material science

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External Career 【 display / non-display 】

  • 2009.04
    　
    　

    Hiroshima university, Institute for Advanced Materials Research, postdoc  

  • 2009.05
    -
    2012.07

    Los Alamos National Laboratory, postdoc  

  • 2012.08
    -
    2012.09

    university of Tsukuba, Graduate School of SIE, Energy Conversion Lab., postdoc  

  • 2012.10
    -
    2023.03

    University of the Ryukyus  

  • 2012.10
    -
    2023.03

    University of the Ryukyus, Faculty of Science, Department of Chemistry, Biology, and Marine Science, Assistant Professor  

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Affiliated academic organizations 【 display / non-display 】

  • 　
    　
    　
     

    THE CHEMICAL SOCIETY OF JAPAN 

  • 　
    　
    　
     

    THE JAPAN SOCIETY OF APPLIED PHYSICS 

  • 2004.04
    -
    Now
     

    Japan Institute of Metals and materials 

  • 2006.09
    -
    2007.09
     

    hydrogen meeting for young researchers    Head of second workshop

  • 2012.11
    -
    2013.11
     

    Japan Society of Coordination Chemistry    Secretary of The 63th Conference

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Research Interests 【 display / non-display 】

  • hydrogen storage materials

  • Ammonia borane

  • Recycle

  • Ammonia

  • Hydrogen storage alloys

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Research Areas 【 display / non-display 】

  • Nanotechnology/Materials / Functional solid state chemistry

  • Nanotechnology/Materials / Inorganic materials and properties

  • Nanotechnology/Materials / Structural materials and functional materials

  • Nanotechnology/Materials / Inorganic/coordination chemistry

  • Natural Science / Mathematical physics and fundamental theory of condensed matter physics

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Acquisition of a qualification 【 display / non-display 】

  • High School Teacher Specialization License

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Research Theme 【 display / non-display 】

  • Recycle chemistry for Islands

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Thesis 【 display / non-display 】

  • 軽元素を用いた水素貯蔵物質構造変化と反応機構の研究

    2004.03

  • Hydrogen storage properties of Metal-Boron-Hydrogen system

    2009.03

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Published Papers 【 display / non-display 】

  • Basic Properties and Safety Features for Handling Ammonia Borane as Hydrogen Source: Toxicity, Corrosivity, Flammability, and Preservability

    Shimizu Y.

    日本エネルギー学会誌 ( 一般社団法人 日本エネルギー学会 )  105 ( 3 ) 59 - 78   2026.03 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    <p>水素源アンモニアボラン（AB）の安全な輸送・取扱いを確保するために，毒性，腐食性，可燃性，貯蔵安定性といった基本的な安全関連特性を，水溶液および粉末の両形態について評価した。AB水溶液の毒性試験では発がん性が示唆され，経口摂取，皮膚浸透，眼への接触を回避するための対策が必要であることが明らかとなった。AB水溶液による浸漬試験では，複数の金属板に腐食および表面析出が確認された。8 mol/L AB水溶液の引火点と発火点はそれぞれ56.5 °Cと129 °Cであり，AB粉末の引火点は84.0 °Cであった。AB粉末は室温・空気曝露下で4年間保存しても高純度を保持した。25 °Cにおいて80%以上の湿度では吸湿するが，絶対湿度が4.4 g/m3未満かつ50 °C未満では分解しないことが明らかになった。さらに，低湿度環境下の容器に保存したAB粉末は，夏季の屋外（50 °C未満）でも1週間にわたり純度を保持した。これらの知見は，水素システムにおけるABの実用利用に向けた安全設計，リスク管理，規制指針の策定を支える包括的なデータセットを提供する。</p>

  • Hydrothermal decomposition of ammonia borane: H2–NH3 release, power generation, and recycle

    Shimizu Y.

    International Journal of Hydrogen Energy ( International Journal of Hydrogen Energy )  154   150211 - 150211   2025.08 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • Hydrothermal decomposition of ammonia borane: H2–NH3 release, power generation, and recycle

    Shimizu Y.

    International Journal of Hydrogen Energy ( International Journal of Hydrogen Energy )  154   150211 - 150211   2025.08 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • Temperature Variation of the Local Structure and Dihydrogen Bonds in Ammonia Borane.

    Ikeda K, Shimizu Y, Nakagawa T, Machida A, Kim H, Sakaki K, Ohara K, Ohshita H, Otomo T

    Journal of the American Chemical Society ( Journal of the American Chemical Society )  147 ( 25 ) 21803 - 21810   2025.06 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • Temperature Variation of the Local Structure and Dihydrogen Bonds in Ammonia Borane.

    Ikeda K, Shimizu Y, Nakagawa T, Machida A, Kim H, Sakaki K, Ohara K, Ohshita H, Otomo T

    Journal of the American Chemical Society ( Journal of the American Chemical Society )    2025.05 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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Other Papers 【 display / non-display 】

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Presentations 【 display / non-display 】

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Industrial Property 【 display / non-display 】

  • Hydrogen production system, fuel cartridge, and ydrogen production system

    Industrial Property No 特願2020-177760  (2020.10.23)

    Patent No 特許6989879  (2021.12.07)

    Tessui Nakagawa, Kazuo Abe, Joji Eguchi, Toru Shirasu

  • Synthesis method of ammonia borane

    Industrial Property No 特願2019-039892  (2020.02.26)

    Unexpectedly No 特開2020-147491  (2020.09.17)

    Patent No 特許7340256  (2023.08.30)

    Nakagawa Tessui

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Academic Awards 【 display / non-display 】

  • GSC research award

    2019.11.17   JST   Milling hydrogenation of MgB2

    Winner: Rin Chinen, Tessui Nakagawa

  • Poster award

    2015.08.28   10th Hydrogen Meeting for Young Researchers   Ammonia storage properties and high purity ammonia emission method of ammine complex

    Winner: Masa-Aki Shiroma, Tessui Nakagawa

  • Professor of th year

    2015.06.25   University of the Ryukyus   Chemistry lab

    Winner: Tessui Nakagawa

  • Professor of th year

    2014.11.04   University of the Ryukyus   Chemistry lab

    Winner: Tessui Nakagawa

  • Poster award

    2014.08.30   9th Hydrogen Meeting for Young Researchers   New ammonia borane synthesis method from h-BN

    Winner: Tessui Nakagawa, Hiroki Uesato, Anthony K. Burrell, Hiroki Miyaoka, Takayuki Ichikawa, Yoshitsugu Kojima

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2024.04  -  2027.03 

    Direct: 3,600,000 (YEN)  Overheads: 4,680,000 (YEN)  Total: 1,080,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2021.04  -  2024.03 

    Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2021.04  -  2024.03 

    Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2021.04  -  2024.03 

    Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2021.04  -  2024.03 

    Direct: 3,200,000 (YEN)  Overheads: 4,160,000 (YEN)  Total: 960,000 (YEN)

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Joint Research activities 【 display / non-display 】

  • In-situ TEM-MS of methanation using hydrogen storage alloys

    Project Year: 2021.04  -  2022.02 

    Member: Nobuko Hanada, Tomohiro Toki, Riki Kobayashi  Offer Organization: Nagoya university

    Direct: 300,000 (YEN)  Overheads: 0 (YEN)  Total: 300,000 (YEN)

  • In-situ TEM-MS of methanation using hydrogen storage alloys

    Project Year: 2020.04  -  2021.02 

    Member: Nobuko Hanada, Tomohiro Toki, Riki Kobayashi  Offer Organization: Nagoya university

    Direct: 300,000 (YEN)  Overheads: 0 (YEN)  Total: 300,000 (YEN)

  • in-situ TEM-MS observation of methanation using hydrogen storage alloys

    Project Year: 2019.04  -  2020.02 

    Member: Nobuko Hanada, Tomohiro Toki, Riki Kobayashi  Offer Organization: Nagoya university

    Direct: 300,000 (YEN)  Overheads: 0 (YEN)  Total: 300,000 (YEN)

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SDGs 【 display / non-display 】

  • 水素エネルギー、リサイクル化学、空調排水の有効利用

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Media Coverage 【 display / non-display 】

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