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Study of charging process at positive electrode in rechargeable lithium-air battery

Research Project

Project/Area Number 20K15370
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

MATSUDA Shoichi  国立研究開発法人物質・材料研究機構, エネルギー・環境材料研究拠点, 主任研究員 (30759717)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords次世代蓄電池 / リチウム空気電池 / 硝酸イオン / レドックスメディエーター / 酸素発生反応 / クロスオーバー / 協調効果
Outline of Research at the Start

リチウム空気電池は既存のリチウムイオン電池の2~5倍のエネルギー密度を可能にする次世代蓄電池の最有力候補である。しかしながら、充電時の正極反応過電圧が高いことが、リチウム空気電池の実用化への最大の課題となっている。本研究では、硝酸イオンをモデルケースとして、その多様や電気化学反応挙動を体系的に理解し、レドックスメディエーターに求められる必要因子を明らかにする。このような一連の研究を通じて、リチウム空気電池の実用化に不可欠な、可逆的な電気化学反応を可能とする電解液設計に関する知見の獲得を目指す。

Outline of Final Research Achievements

Lithium-air batteries are the most promising candidates for next-generation storage batteries because they enable energy densities two to five times that of existing lithium-ion batteries. However, the high positive electrode reaction overvoltage during charging and the low output density are the biggest problems in putting lithium-air batteries into practical use. The purpose of this study was to clarify the measures to solve the above battery performance problems by focusing on the electrochemical reaction behavior of nitrate ion redx. Specifically, we focused on a mixed electrolyte system of nitrate ion/amide solvent/fluorine solvent, and succeeded in developing an electrolyte that achieves high reaction reversibility for both the oxygen positive electrode and the lithium negative electrode of lithium-air batteries.

Academic Significance and Societal Importance of the Research Achievements

今回開発した硝酸イオン/アミド溶媒/フッ素溶媒の混合電解液系を用いることで、リチウム空気電池の酸素正極・リチウム負極の双方において高い反応可逆性での反応進行が可能となることが明らかとなった。その結果、1mA/cm2, 2mAh/cm2という非常に高い電流密度・面積容量の条件において、リチウム空気電池の充放電反応の作動に成功した。今回提示した電解液開発実施例は、今後の材料開発において、大きな指針となるものであり、リチウム空気電池の早期実用化に大きく寄与するものである。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results)

  • [Journal Article] Positive Electrode Reaction of Lithium-Oxygen Batteries with NO3-/Br- Redox Mediator under High Areal Capacity and Lean Electrolyte Conditions2023

    • Author(s)
      Ono Manai、Matsuda Shoichi
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 127 Issue: 13 Pages: 6117-6124

    • DOI

      10.1021/acs.jpcc.2c07847

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lithium Nitrate/Amide-Based Localized High Concentration Electrolyte for Rechargeable Lithium-Oxygen Batteries under High Current Density and High Areal Capacity Conditions2023

    • Author(s)
      Ono Manai、Matsuda Shoichi
    • Journal Title

      ACS Applied Energy Materials

      Volume: 6 Issue: 6 Pages: 3357-3365

    • DOI

      10.1021/acsaem.2c04067

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Crossover Accelerates Degradation of Lithium Electrode in High Energy Density Rechargeable Lithium-Oxygen Batteries2023

    • Author(s)
      Matsuda Shoichi、Ono Manai、Asahina Hitoshi、Kimura Shin、Mizuki Emiko、Yasukawa Eiki、Yamaguchi Shoji、Kubo Yoshimi、Uosaki Kohei
    • Journal Title

      Advanced Energy Materials

      Volume: 13 Issue: 11 Pages: 2203062-2203062

    • DOI

      10.1002/aenm.202203062

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] <i>N</i>,<i>N</i>-Dimethylethanesulfonamide as an Electrolyte Solvent Stable for the Positive Electrode Reaction of Aprotic Li?O<sub>2</sub> Batteries2022

    • Author(s)
      Nishioka Kiho、Saito Morihiro、Ono Manai、Matsuda Shoichi、Nakanishi Shuji
    • Journal Title

      ACS Applied Energy Materials

      Volume: 5 Issue: 4 Pages: 4404-4412

    • DOI

      10.1021/acsaem.1c03999

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Electrolyte Filling Technology on the Performance of Porous Carbon Electrode-Based Lithium-Oxygen Batteries2021

    • Author(s)
      Matsuda Shoichi、Yamaguchi Shoji、Yasukawa Eiki、Asahina Hitoshi、Kakuta Hirofumi、Otani Haruhiko、Kimura Shin、Kameda Takashi、Takayanagi Yoshiki、Tajika Akihiko、Kubo Yoshimi、Uosaki Kohei
    • Journal Title

      ACS Applied Energy Materials

      Volume: 4 Issue: 7 Pages: 2563-2569

    • DOI

      10.1016/j.xcrp.2021.100506

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identifying the Performance Limiters in High Areal-Capacity Li-Oxygen Battery at Subzero Temperatures2021

    • Author(s)
      Dutta Arghya、Matsuda Shoichi
    • Journal Title

      ACS Applied Energy Materials

      Volume: 4 Issue: 3 Pages: 4277-4283

    • DOI

      10.1039/d1mh01546j

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2020-04-28   Modified: 2024-01-30  

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