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Snapshot Analysis of Dynamic Electrochemical Interfaces by Emersion Techniques

Research Project

Project/Area Number 19H02695
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 32020:Functional solid state chemistry-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Yokota Yasuyuki  国立研究開発法人理化学研究所, 開拓研究本部, 専任研究員 (00455370)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Keywords電気二重層 / 電気化学界面 / 光電子分光 / 走査トンネル顕微鏡
Outline of Research at the Start

蓄電池等の更なる性能向上のため溶液/電極界面の原子スケール解析が強く望まれているが、液体の存在によって実験手法が著しく限られている。本研究では、光電子分光測定及び走査トンネル顕微鏡を用いた凍結電気二重層のスナップショット測定(ex situ測定)を行い、in situ測定では取得できない電極上のイオン・溶媒・反応中間体分布を解析し、従来の電気二重層モデルでは捉えられない現実電極系の新しい物理化学を創成する。

Outline of Final Research Achievements

Atomic-scale analysis of the solution/electrode interface is strongly desired to further improve the performance of storage batteries and other devices, but experimental techniques are severely limited by the presence of liquid. While in situ techniques to measure the interface in situ are currently being developed, we have succeeded in developing a technique to pull up the electrode from the liquid and introduce it into an ultrahigh vacuum while maintaining the 1 nm-thick electric double layer formed at the interface. In this study, we have performed snapshot measurements of the electric double layer (ex situ measurements) using photoelectron spectroscopy, which enables chemical species identification, and scanning tunneling microscopy, which enables atomic-scale analysis, and successfully tracked various events on the electrode that cannot be obtained by the in situ measurements.

Academic Significance and Societal Importance of the Research Achievements

2050年のカーボンニュートラル実現に向けて蓄電池等の電気化学デバイスの開発が急務となっており、デバイス性能を決定する電気二重層の詳細を原子スケールで評価できる手法の開発が望まれている。もし、ある瞬間の電気二重層の原子配置を保持して取り出すことができれば、電極表面上のイオンや溶媒分子の分布を把握できるだけでなく、電気化学反応前後の化学種を個別に捉えることまで可能になる。本研究では、従来の理想化された電気二重層モデルでは捉えられない現実電極系の物理化学を展開し、次世代の電気化学デバイス設計に資する知見を得ることに成功した。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (24 results)

All 2022 2021 2020 2019 Other

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Stepping beyond cyclic voltammetry: Obtaining the electronic and structural properties of electrified solid-liquid interfaces2022

    • Author(s)
      Wong Raymond A., Yokota Yasuyuki, Kim Yousoo
    • Journal Title

      Current Opinion in Electrochemistry

      Volume: 34 Pages: 100964-100964

    • DOI

      10.1016/j.coelec.2022.100964

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Graphite Electrodes Immersed in Nonaqueous Li+ Electrolytes Studied with a Combined Ultrahigh Vacuum-Electrochemistry Approach2021

    • Author(s)
      Wong Raymond A., Yokota Yasuyuki, Kazuma Emiko, Oniki Motoyuki, Kim Yousoo
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 125 Issue: 38 Pages: 21093-21100

    • DOI

      10.1021/acs.jpcc.1c03645

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Monatomic Iodine Dielectric Layer for Multimodal Optical Spectroscopy of Dye Molecules on Metal Surfaces2021

    • Author(s)
      Yokota Yasuyuki, Wong Raymond A., Hong Misun, Hayazawa Norihiko, Kim Yousoo
    • Journal Title

      Journal of the American Chemical Society

      Volume: 143 Issue: 37 Pages: 15205-15214

    • DOI

      10.1021/jacs.1c06303

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] <i>Operando</i> atomic force microscopy study of electric double-layer transistors based on ionic liquid/rubrene single crystal interfaces2021

    • Author(s)
      Morino Yusuke、Yokota Yasuyuki、Bando Ken-ichi、Hara Hisaya、Imanishi Akihito、Takeya Jun、Fukui Ken-ichi
    • Journal Title

      Applied Physics Letters

      Volume: 118 Issue: 24 Pages: 243301-243301

    • DOI

      10.1063/5.0053848

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular Scale Assessments of Electrochemical Interfaces: In Situ and Ex Situ Approaches2021

    • Author(s)
      Yokota Yasuyuki, Kim Yousoo
    • Journal Title

      Chemistry Letters

      Volume: 50 Issue: 2 Pages: 297-304

    • DOI

      10.1246/cl.200735

    • NAID

      130007986365

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Probing Consequences of Anion-Dictated Electrochemistry on the Electrode/Monolayer/Electrolyte Interfacial Properties2020

    • Author(s)
      Raymond A. Wong, Yasuyuki Yokota, Mitsuru Wakisaka, Junji Inukai, Yousoo Kim
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 4194-4194

    • DOI

      10.1038/s41467-020-18030-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rapid improvements in charge carrier mobility at ionic liquid/pentacene single crystal interfaces by self-cleaning2020

    • Author(s)
      Morino Yusuke、Yokota Yasuyuki、Hara Hisaya、Bando Ken-ichi、Ono Sakurako、Imanishi Akihito、Okada Yugo、Matsui Hiroyuki、Uemura Takafumi、Takeya Jun、Fukui Ken-ichi
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 22 Issue: 11 Pages: 6131-6135

    • DOI

      10.1039/d0cp00149j

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Correlation between mobility and the hydrogen bonding network of water at an electrified-graphite electrode using molecular dynamics simulation2020

    • Author(s)
      Imai Masaya、Yokota Yasuyuki、Tanabe Ichiro、Inagaki Kouji、Morikawa Yoshitada、Fukui Ken-ichi
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 22 Issue: 3 Pages: 1767-1773

    • DOI

      10.1039/c9cp06013h

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 複雑な電気化学界面の微視的理解に向けたIn situ及びEx situ計測技術2022

    • Author(s)
      横田泰之
    • Organizer
      NanospecFY2021mini
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 電気化学界面の微視的理解に向けた電気化学探針増強ラマン分光法及び周辺技術の開発2022

    • Author(s)
      横田泰之
    • Organizer
      第69回応用物理学関係連合講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Stepping beyond Cyclic Voltammetry: Obtaining the Electronic Properties of Electrified Solid-Liquid Interfaces2022

    • Author(s)
      Raymond A. Wong, Yasuyuki Yokota, Mitsuru Wakisaka, Junji Inukai, Yousoo Kim
    • Organizer
      241st ECS Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electronic Structure Analysis of Redox-Active Electrochemical Interfaces Using Ex Situ Photoelectron Spectroscopy2022

    • Author(s)
      Yasuyuki Yokota, Raymond A. Wong, Mitsuru Wakisaka, Junji Inukai, Yousoo Kim
    • Organizer
      The 22nd International Vacuum Congress (IVC-22)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chemical and Morphological Changes of Graphite Electrodes at Low Cathodic Potentials and its Relevance to Li-Ion Batteries2022

    • Author(s)
      Raymond A. Wong, Yasuyuki Yokota, Emiko Kazuma, Motoyuki Oniki, Yousoo Kim
    • Organizer
      241st ECS Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 引上げ電極の光電子分光測定による電気化学界面の電子状態解析2022

    • Author(s)
      横田泰之, Raymond A. Wong, 脇坂暢, 犬飼潤治, 金有洙
    • Organizer
      第69回応用物理学関係連合講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Redox-Active Self-Assembled Monolayers as a Spectroscopic Molecular Probe in the Study of Electrified Solid-Liquid Interfaces2021

    • Author(s)
      Raymond A. Wong, Yasuyuki Yokota, Yousoo Kim
    • Organizer
      The Electrochemical Societry (ECS) Canada Section 2021 Fall Symposium
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrochemically-Induced Electronic and Structural Properties of the Electrode-Monolayer-Electrolyte Interface2021

    • Author(s)
      Raymond A. Wong, Yasuyuki Yokota, Mitsuru Wakisaka, Junji Inukai, Yousoo Kim
    • Organizer
      International Symposium on Surface Science (ISSS-9)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 電気化学-超高真空複合システムを用いたレドックス活性な電気化学界面の電子状態解析2021

    • Author(s)
      横田泰之, Raymond A. Wong, 脇坂暢, 犬飼潤治, 金有洙
    • Organizer
      第15回分子科学討論会2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] Ex situ計測によるレドックス活性な電気化学界面の電子状態解析2021

    • Author(s)
      横田泰之, Raymond A. Wong, 脇坂暢, 犬飼潤治, 金有洙
    • Organizer
      表面界面スペクトロスコピー2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光電子分光法-電気化学複合装置を用いたフェロセン終端自己組織化単分子膜のレドックス反応解析2021

    • Author(s)
      Raymond A. Wong, Yasuyuki Yokota, Mitsuru Wakisaka, Junji Inukai, Yousoo Kim
    • Organizer
      電気化学会第88回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 電気化学界面の微視的理解に向けたin-situ及びex-situ手法の開拓: 近接場分光と光電子分光の応用2021

    • Author(s)
      横田泰之
    • Organizer
      第76回物理学会年次大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Anion-Modulated Electrolyte/Monolayer/Electrolyte Interface in Redox-Active Self-Assembled Monolayers Probed with Photoelectron Spectroscopy2020

    • Author(s)
      Raymond A. Wong, 横田泰之, 脇坂暢, 犬飼潤治, 金有洙
    • Organizer
      電気化学会第87回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Probing the Redox-Dependent Electronic and Interfacial Structure in Ferrocene-Terminated Self-Assembled Monolayers with Photoelectron Spectroscopy2019

    • Author(s)
      Raymond A. Wong, Yasuyuki Yokota, Mitsuru Wakisaka, Junji Inukai, Yousoo Kim
    • Organizer
      236th Electrochemical Society Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photoelectron Spectroscopic Investigation on the Redox-Dependent Electronic and Interfacial Structures in Ferrocene-Terminated Self-Assembled Monolayers2019

    • Author(s)
      Raymond A. Wong, 横田泰之, 脇坂暢, 犬飼潤治, 金有洙
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Remarks] RIKEN Research Highlight

    • URL

      https://www.riken.jp/en/news_pubs/research_news/rr/20201211_1/index.html

    • Related Report
      2020 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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