Material Innovation for Li/Na Batteries with Metastable Phases

• Project/Area Number: 18H02076
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 36020:Energy-related chemistry
• Research Institution: Yokohama National University
• Principal Investigator: Yabuuchi Naoaki 横浜国立大学, 大学院工学研究院, 教授 (80529488)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000); Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2019: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000); Fiscal Year 2018: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
• Keywords: 蓄電池 / 準安定相 / リチウム / ナトリウム / 準安定

Outline of Final Research Achievements

Toward sustainable energy society, advanced electrode materials are necessary for Li-ion batteries with higher energy density. In this subject, innovative and metastable materials have been synthesized and evaluated as potential high capacity electrode materials. Metastable materials found in this subject deliver large reversible capacities as electrode materials, leading to the development of advanced Li-ion batteries in the future.

Academic Significance and Societal Importance of the Research Achievements

リチウムイオン電池を搭載した電気自動車の市場が世界中で拡大を続けている。また、再生可能エネルギーとしての太陽光発電の低コスト化が進んでおり、自然エネルギーのさらなる活用と脱炭素社会の構築が求められている。そのためには蓄電池の高性能化が求めれており、本研究課題では、蓄電池の高性能化に繋がる準安定相材料の研究成果が得られており、これは、将来的な電気自動車の高機能化と脱炭素社会の実現に大きく貢献することが期待できる。

Research Products

• [Journal Article] Nanostructured LiMnO2 with Li3PO4 Integrated at the Atomic Scale for High-Energy Electrode Materials with Reversible Anionic Redox (2020)
  • Author(s): Sawamura Miho、Kobayakawa Sho、Kikkawa Jun、Sharma Neeraj、Goonetilleke Damian、Rawal Aditya、Shimada Nanaka、Yamamoto Kentaro、Yamamoto Rina、Zhou Yingying、Uchimoto Yoshiharu、Nakanishi Koji、Mitsuhara Kei、Ohara Koji、Park Jiwon、Byon Hye Ryung、Koga Hiroaki、Okoshi Masaki、Ohta Toshiaki、Yabuuchi Naoaki
  • Journal Title: ACS Central Science Volume: 6 Issue: 12 Pages: 2326-2338
  • DOI: 10.1021/acscentsci.0c01200
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Nanosize Cation‐Disordered Rocksalt Oxides: Na 2 TiO 3 ?NaMnO 2 Binary System (2020)
  • Author(s): Kobayashi Tokio、Zhao Wenwen、Rajendra Hongahally Basappa、Yamanaka Keisuke、Ohta Toshiaki、Yabuuchi Naoaki
  • Journal Title: Small Volume: 16 Issue: 12 Pages: 1902462-1902462
  • DOI: 10.1002/smll.201902462
  • NAID: 120006849908
  • Peer Reviewed
• [Journal Article] Activation and stabilization mechanisms of anionic redox for Li storage applications: Joint experimental and theoretical study on Li2TiO3?LiMnO2 binary system (2020)
  • Author(s): Kobayashi Yuki、Sawamura Miho、Kondo Sayaka、Harada Maho、Noda Yusuke、Nakayama Masanobu、Kobayakawa Sho、Zhao Wenwen、Nakao Aiko、Yasui Akira、Rajendra Hongahally Basappa、Yamanaka Keisuke、Ohta Toshiaki、Yabuuchi Naoaki
  • Journal Title: Materials Today Volume: in-press Pages: 43-55
  • DOI: 10.1016/j.mattod.2020.03.002
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Li/Na Storage Properties of Disordered Carbons Synthesized by Mechanical Milling (2019)
  • Author(s): SHIMIZU Soma、RAJENDRA Hongahally Basappa、WATANUKI Ryuta、YABUUCHI Naoaki
  • Journal Title: Electrochemistry Volume: 87 Issue: 5 Pages: 276-280
  • DOI: 10.5796/electrochemistry.19-00029
  • NAID: 130007702956
  • ISSN: 1344-3542, 2186-2451
  • Year and Date: 2019-09-05
  • Peer Reviewed
• [Journal Article] Improved Electrode Performance of Lithium-Excess Molybdenum Oxyfluoride: Titanium Substitution with Concentrated Electrolyte (2019)
  • Author(s): Takeda Nanami、Ikeuchi Issei、Natsui Ryuichi、Nakura Kensuke、Yabuuchi Naoaki
  • Journal Title: ACS Applied Energy Materials Volume: 2 Issue: 3 Pages: 1629-1633
  • DOI: 10.1021/acsaem.9b00135
  • Peer Reviewed
• [Journal Article] Metastable and nanosize cation-disordered rocksalt-type oxides: revisit of stoichiometric LiMnO2 and NaMnO2 (2018)
  • Author(s): Sato Takahito、Sato Kei、Zhao Wenwen、Kajiya Yoshio、Yabuuchi Naoaki
  • Journal Title: Journal of Materials Chemistry A Volume: 6 Issue: 28 Pages: 13943-13951
  • DOI: 10.1039/c8ta03667e
  • NAID: 120006643664
  • Peer Reviewed
• [Journal Article] Material Design Concept of Lithium‐Excess Electrode Materials with Rocksalt‐Related Structures for Rechargeable Non‐Aqueous Batteries (2018)
  • Author(s): Yabuuchi Naoaki
  • Journal Title: The Chemical Record Volume: 19 Issue: 4 Pages: 690-707
  • DOI: 10.1002/tcr.201800089
  • NAID: 120006643663
  • Peer Reviewed
• [Journal Article] Influence of Synthesis Conditions on Electrochemical Properties of P2‐Type Na 2/3 Fe 2/3 Mn 1/3 O 2 for Rechargeable Na Batteries (2018)
  • Author(s): Zhao Wenwen、Tsuchiya Yuka、Yabuuchi Naoaki
  • Journal Title: Small Methods Volume: 3 Issue: 4 Pages: 1800032-1800032
  • DOI: 10.1002/smtd.201800032
  • Peer Reviewed
• [Presentation] Oxides/oxyfluroides-based Electrode Materials for Na Storage Applications (2021)
  • Author(s): Naoaki Yabuuchi
  • Organizer: 45th International conference and exposition on advanced ceramics and composites (ICACC2021)
  • Int'l Joint Research / Invited
• [Presentation] Nanostructured High-capacity Positive Electrode Materials (2020)
  • Author(s): Naoaki Yabuuchi
  • Organizer: NANO KOREA 2020
  • Int'l Joint Research / Invited
• [Presentation] Nanostructured Rocksalt-Based Positive Electrode Materials for Rechargeable Li/Na Batteries (2020)
  • Author(s): Naoaki Yabuuchi
  • Organizer: PRiME 2020
  • Int'l Joint Research / Invited
• [Presentation] Mn-based electrode materials for high-energy rechargeable Li/Na batteries (2019)
  • Author(s): N. Yabuuchi
  • Organizer: Asia Pacific Society for Materials Research 2019 Annual Meeting (APSMR 2019 Annual Meeting)
  • Int'l Joint Research / Invited
• [Presentation] Factors Affecting Reversibility of Anionic Redox for Li-excess Metal Oxides as Positive Electrode Materials of Lithium Batteries (2019)
  • Author(s): N. Yabuuchi
  • Organizer: The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)
  • Int'l Joint Research / Invited
• [Presentation] Development of New Niobium-based Oxides for High-capacity Positive Electrode Materials (2019)
  • Author(s): N. Yabuuchi
  • Organizer: Niobium-based Materials for Batteries and Advanced Electrochemical Energy Storage
  • Int'l Joint Research / Invited
• [Presentation] Nanostructured Mn-Based High-Capacity Positive Electrode Materials (2019)
  • Author(s): N. Yabuuchi
  • Organizer: International conference for advanced cathodes in lithium & sodium ion batteries (ICAC2019)
  • Int'l Joint Research / Invited
• [Presentation] Charge Compensation by Cationic/Anionic Redox for High-Capacity Positive Electrode Materials (2018)
  • Author(s): N. Yabuuchi
  • Organizer: 233rd ECS Meeting
  • Int'l Joint Research / Invited
• [Presentation] Anionic and Cationic Redox Reaction for Rechargeable Li/Na Batteries (2018)
  • Author(s): N. Yabuuchi
  • Organizer: The 19th International Meeting on Lithium Batteries (IMLB2018)
  • Int'l Joint Research / Invited
• [Presentation] ationic/Anionic Redox with Li-Excess Cation-Disordered Rocksalt Oxides for Non-Aqueous Batteries (2018)
  • Author(s): N. Yabuuchi
  • Organizer: The International Union of Materials Research Societies; International Conference on Electronic Materials 2018 (IUMRS-ICEM 2018)
  • Int'l Joint Research / Invited
• [Presentation] High-capacity positive electrode materials with cationic/anionic redox for non-aqueous batteries (2018)
  • Author(s): N. Yabuuchi
  • Organizer: International Conference on Solid State Devices and Materials, SSDM2018
  • Int'l Joint Research / Invited
• [Presentation] Ligand Hole Creation on Li-Excess Cation-Disordered Rocksalt Oxides for Rechargeable Li/Na Batteries (2018)
  • Author(s): N. Yabuuchi
  • Organizer: The 3rd International Conference on Emerging Advanced Nanomaterials; ICEAN-2018
  • Int'l Joint Research / Invited
• [Presentation] Ti-based Negative Electrodes for Sodium Batteries (2018)
  • Author(s): N. Yabuuchi
  • Organizer: The 5th International Conference on Sodium Batteries (ICNaB2018)
  • Int'l Joint Research / Invited
• [Presentation] Lithiu-excess electrode materials with cation-disordered rocksalt strcutrue for high-energy rechargeable lithium batteries (2018)
  • Author(s): N. Yabuuchi
  • Organizer: Hong Kong Symposium of Batteries
  • Int'l Joint Research / Invited
• [Remarks] 高エネルギー密度蓄電池材料の発見
  • URL: https://www.ynu.ac.jp/hus/koho/23776/detail.html