• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Local atomic structures of amorphous electrode materials and charge-discharge mechanism

Research Project

Project/Area Number 17H01325
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural/Functional materials
Research InstitutionWaseda University (2018-2019)
Tohoku University (2017)

Principal Investigator

Hirata Akihiko  早稲田大学, 理工学術院, 教授(任期付) (90350488)

Co-Investigator(Kenkyū-buntansha) 渡辺 健太郎  東北大学, 材料科学高等研究所, 准教授 (40582078)
赤木 和人  東北大学, 材料科学高等研究所, 准教授 (50313119)
谷村 誠  横浜国立大学, 機器分析評価センター, 准教授 (00381591)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥40,560,000 (Direct Cost: ¥31,200,000、Indirect Cost: ¥9,360,000)
Fiscal Year 2019: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2018: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Fiscal Year 2017: ¥21,710,000 (Direct Cost: ¥16,700,000、Indirect Cost: ¥5,010,000)
Keywords電子回折 / 電池用負極材料 / アモルファス / リバースモンテカルロ / 電池用負極材 / 局所構造 / 電池材料 / 構造解析 / 構造モデリング / 局所電子回折 / リバースモンテカルロ法 / 電池用材料 / 局所構造解析 / 電子顕微鏡 / アモルファス物質 / モデリング
Outline of Final Research Achievements

In this work, we developed some novel analytical techniques for amorphous materials based on our previous techniques and applied them to the structure analyses on amorphous electrodes of Li-ion batteries. As a result, it has become possible to obtain significant structural information which have not been obtained yet. Moreover, local structural information during charge-discharge process was also obtained by analyzing amorphous materials after the charge-discharge treatments. We will further obtain more information about the microscopic structures to understand the charge-discharge mechanism of Li-ion batteries.

Academic Significance and Societal Importance of the Research Achievements

近年リチウムイオン電池等の2次電池は電気自動車への利用を念頭にさらなる大容量化が望まれてきているが、特に負極材の大容量化が必要となってきている。その候補としてシリコン系アモルファス物質等が挙げられるが、アモルファス物質の構造は周期性がなく大変複雑である。我々の研究では、このようなアモルファス物質の局所構造解析手法を開発し、アモルファス負極材に適用するだけでなく、実際にリチウムを充放電した材料の解析にも応用し、これまで得られなかった構造情報を得ることが可能となった。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (17 results)

All 2019 2018

All Journal Article (10 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 10 results,  Open Access: 4 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 7 results)

  • [Journal Article] Understanding diffraction patterns of glassy, liquid and amorphous materials via persistent homology analyses2019

    • Author(s)
      ONODERA Yohei、KOHARA Shinji、TAHARA Shuta、MASUNO Atsunobu、INOUE Hiroyuki、SHIGA Motoki、HIRATA Akihiko、TSUCHIYA Koichi、HIRAOKA Yasuaki、OBAYASHI Ippei、OHARA Koji、MIZUNO Akitoshi、SAKATA Osami
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 127 Issue: 12 Pages: 853-863

    • DOI

      10.2109/jcersj2.19143

    • NAID

      130007755063

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2019-12-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ultrahigh-pressure form of SiO2 glass with dense pyrite-type crystalline homology2019

    • Author(s)
      Murakami M.、Kohara S.、Kitamura N.、Akola J.、Inoue H.、Hirata A.、Hiraoka Y.、Onodera Y.、Obayashi I.、Kalikka J.、Hirao N.、Musso T.、Foster A. S.、Idemoto Y.、Sakata O.、Ohishi Y.
    • Journal Title

      Physical Review B

      Volume: 99 Issue: 4 Pages: 045153-045153

    • DOI

      10.1103/physrevb.99.045153

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Lithium intercalation into bilayer graphene2019

    • Author(s)
      Ji Kemeng、Han Jiuhui、Hirata Akihiko、Fujita Takeshi、Shen Yuhao、Ning Shoucong、Liu Pan、Kashani Hamzeh、Tian Yuan、Ito Yoshikazu、Fujita Jun-ichi、Oyama Yutaka
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 275-275

    • DOI

      10.1038/s41467-018-07942-z

    • NAID

      120007133576

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Crystalline Approximant of Amorphous Fe-Si-B Structures2018

    • Author(s)
      Hirata Akihiko
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 59 Issue: 7 Pages: 1047-1050

    • DOI

      10.2320/matertrans.MD201711

    • NAID

      130007410561

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2018-07-01
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Distortion of Local Atomic Structures in Amorphous Ge-Sb-Te Phase Change Materials2018

    • Author(s)
      Hirata A.、Ichitsubo T.、Guan P.F.、Fujita T.、Chen M.W.
    • Journal Title

      Physical Review Letters

      Volume: 120 Issue: 20 Pages: 2055021-5

    • DOI

      10.1103/physrevlett.120.205502

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Amorphous Structure Analysis of Si Anode for Li Ion Battery2018

    • Author(s)
      Shimo Yusuke、Hirata Akihiko、Yamasaki Hisatsugu、Yamaguchi Hiroyuki、Sato Kazuaki
    • Journal Title

      Microscopy and Microanalysis

      Volume: 24 Issue: S1 Pages: 1526-1527

    • DOI

      10.1017/s1431927618008115

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intercalation pseudocapacitance of amorphous titanium dioxide@nanoporous graphene for high-rate and large-capacity energy storage2018

    • Author(s)
      Han Jiuhui、Hirata Akihiko、Du Jing、Ito Yoshikazu、Fujita Takeshi、Kohara Shinji、Ina Toshiaki、Chen Mingwei
    • Journal Title

      Nano Energy

      Volume: 49 Pages: 354-362

    • DOI

      10.1016/j.nanoen.2018.04.063

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spatial heterogeneity as the structure feature for structure?property relationship of metallic glasses2018

    • Author(s)
      Zhu Fan、Song Shuangxi、Reddy Kolan Madhav、Hirata Akihiko、Chen Mingwei
    • Journal Title

      Nature Communications

      Volume: 9 Issue: 1 Pages: 39651-7

    • DOI

      10.1038/s41467-018-06476-8

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Crystalline Approximant of Amorphous Fe-Si-B Structures2018

    • Author(s)
      A. Hirata
    • Journal Title

      Materials Transactions

      Volume: 印刷中

    • NAID

      130007410561

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Distortion of local atomic structures in amorphous Ge-Sb-Te phase change materials2018

    • Author(s)
      A. Hirata, T. Ichitsubo, P. F. Guan, T. Fujita and M. W. Chen
    • Journal Title

      Physical Review Letters

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] STEM電子回折法によるガラスの局所構造解析2019

    • Author(s)
      平田秋彦
    • Organizer
      日本物理学会2019年秋季大会(物性)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 2.Local structure modeling for glasses by angstrom-beam electron diffraction2019

    • Author(s)
      Akihiko Hirata
    • Organizer
      The 14th International Conference on the Structure of Non-Crystalline Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ナノビーム電子回折法による金属ガラスの局所構造解析2019

    • Author(s)
      平田秋彦
    • Organizer
      日本結晶学会令和元年度年会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 4.Local structure modeling for glasses by angstrom-beam electron diffraction2019

    • Author(s)
      平田秋彦
    • Organizer
      相変化研究会シンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] アモルファス材料の構造抽出手法の開発2019

    • Author(s)
      平田秋彦
    • Organizer
      日本金属学会2020年春期講演大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Direct observation and modeling of local atomic structures of amorphous materials2018

    • Author(s)
      Akihiko Hirata, Takeshi Fujita and Mingwei Chen
    • Organizer
      日本顕微鏡学会第61回シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] アモルファス物質の構造抽出手法の開発2018

    • Author(s)
      平田 秋彦
    • Organizer
      第32回分子シミュレーション討論会
    • Related Report
      2018 Annual Research Report
    • Invited

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi