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Fabrication of multilayer graphene for flexible devices

Research Project

Project/Area Number 21K20436
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0302:Electrical and electronic engineering and related fields
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Murata Hiromasa  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究員 (10909576)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords多層グラフェン / 層交換 / フレキシブルデバイス / 結晶成長 / 金属誘起層交換
Outline of Research at the Start

近年、ウェアラブル・デバイスの市場が急速に拡大しているが、従来の固いバッテリーが汎用性拡大の面で課題となっている。本研究では、フレキシブル・デバイスの実現に向けて、軽くて柔らかい次世代型二次電池「フレキシブル全固体薄膜電池」を提案する。その実現に向けて、研究代表者の多層グラフェン合成技術をベースとし、実現のボトルネックとなる多層グラフェンの革新構造の開発と負極に関する新学理の構築を行う。

Outline of Final Research Achievements

In this research, we investigated the development of a multilayer graphene anode using the layer exchange phenomenon to build a flexible all-solid-state thin-film rechargeable battery. At the beginning of this research, an unexpected problem happened; the layer exchange phenomenon between amorphous carbon and nickel did not occur and multilayer graphene did not form. Then, we investigated the relationship between the initial amorphous carbon and the layer exchange phenomenon in detail, which had not been focused before. As a result, we found that the density and oxygen concentration of the initial amorphous carbon have a significant impact on the layer exchange temperature and the crystal quality of resulting multilayer graphene. This is an important finding for further research on layer exchange of multilayer graphene. In addition, coin cell equipped with multilayer graphene anode formed by layer exchange demonstrated good anode properties.

Academic Significance and Societal Importance of the Research Achievements

従来の冷却時における金属触媒からのグラフェンの析出合成とは異なり、層交換現象では熱処理中に多層グラフェンが合成される。この成長機構により、膜厚制御した多層グラフェンを低温合成できるという他手法には無い優れた特徴をもち、多様なデバイスへの展開が期待できる。本技術に関して、本研究により新たな原理が明らかとなった。これは今後の多層グラフェンの層交換現象に関する研究に広く適用できる知見であり、本研究で実証した二次電池負極をはじめとして、多様なグラフェンデバイスの実現可能性を拡げるものである。

Report

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

    (7 results)

All 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Thickness Dependency of Battery Anode Properties in Multilayer Graphene2023

    • Author(s)
      T. Suzuki, H. Murata, Y. Kado, T. Ishiyama, N. Saitoh, N. Yoshizawa, T. Suemasu, and K. Toko
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 14 Issue: 49 Pages: 54670-54670

    • DOI

      10.1021/acsami.2c14152

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of the Density and Oxygen Concentration of Initial Amorphous Carbon on Layer Exchange of Multilayer Graphene2022

    • Author(s)
      Murata Hiromasa、Toko Kaoru、Murakami Katsuhisa、Nagao Masayoshi
    • Journal Title

      Crystal Growth & Design

      Volume: 22 Issue: 12 Pages: 7564-7568

    • DOI

      10.1021/acs.cgd.2c01083

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Layer exchange synthesis of multilayer graphene2021

    • Author(s)
      Toko Kaoru、Murata Hiromasa
    • Journal Title

      Nanotechnology

      Volume: 32 Issue: 47 Pages: 472005-472005

    • DOI

      10.1088/1361-6528/ac1d05

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] グラファイト薄膜の金属誘起層交換合成とデバイス応用2023

    • Author(s)
      村田博雅
    • Organizer
      日本表面真空学会スパッタリングおよびプラズマプロセス技術部会第174回定例研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] High quality multilayer graphene synthesis by controlling amorphous carbon density in layer exchange2022

    • Author(s)
      H. Murata, K. Toko, K. Murakami, M. Nagao
    • Organizer
      The 22nd international vacuum congress
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 金属誘起層交換による多層グラフェン合成と薄膜二次電池応用2021

    • Author(s)
      村田博雅
    • Organizer
      CPC研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] 電界放出素子およびその製造方法2021

    • Inventor(s)
      長尾昌善, 村田博雅, 村上勝久
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2021-10-22   Modified: 2024-01-30  

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