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2024

1. Transition Metal Parent Alumylene Complexes: Synthesis, Structures, and XPS Characterization of Aluminum Oxidation State
   K. Sato, T. Komuro, S. Imashuku, H. Li, T. Ichitsubo*, and H. Hashimoto*
   Inorg. Chem. 2024, XX, XXX.
2. Why is neutral tin addition necessary for biocompatible β-titanium alloys? –Synergistic effects of suppressing ω transformations
   Norihiko L. Okamoto, Florian Brumbauer, Martin Luckabauer, Wolfgang Sprengel, Ryota Abe, and Tetsu Ichitsubo
   Acta Materialia, 273, 119968 (2024).
3. Utilization of Delithiation-Induced Amorphous Oxide as a Cathode for Rechargeable Magnesium Batteries
   Tomoya Kawaguchi*,Natsumi Nemoto,Hikari Sakurai,Norihiko L. Okamoto,and Tetsu Ichitsubo*
   Chem. Mater. 2024, 36, 9, 4877–4887
4. Reversible Tetrahedral-Site Migration Inducing an Additional Charge Compensation Reaction in Li-Rich Layered Oxide 0.4Li₂MnO₃–0.6LiNi_0.5Mn_0.5O₂,
   Tomoya Kawaguchi*,Masatsugu Oishi*, Yusuke Fujita, Masaya Izumi, Satoshi Hiroi, Koji Ohara, Norihiko L. Okamoto, and Tetsu Ichitsubo (*equally contributed)
   Chemistry of Materials, published online
5. Securing cation vacancies to enable reversible Mg insertion/extraction in rocksalt oxides,
   Tomoya Kawaguchi, Masaya Yasuda, Natsumi Nemoto, Kohei Shimokawa, Hongyi Li, Norihiko L. Okamoto, and Tetsu Ichitsubo
   J. Mater. Chem. A, 12, 9088 (2024).

2023

1. 1. 1. Li intercalation in 2D iron phosphate synthesized from the partial dehydration and deprotonation of vivianite,
         Ryo Yamane, Hongyi Li, Tetsu Ichitsubo, Kazumasa Sugiyama,
         Physical Chemistry Chemical Physics, 25, 31346 (2023).
      2. Minor additions of Sn suppress the omega phase formation in beta titanium alloys,
         Florian Brumbauer, Norihiko L. Okamoto, Tetsu Ichitsubo,
         Wolfgang Sprengel, Martin Luckabauer
         Acta Materialia, 262, 119466 (2024).
      3. Atomistic study of liquid fragility and spatial heterogeneity of glassy solids in model binary alloys,
         Masato Wakeda,Tetsu Ichitsubo,
         The Journal of NPG Asia Materials. 15(1), 46 (2023).
      4. Dual origin of oval electron diffraction pattern in δ-type layered manganese dioxide,
         Norihiko L. Okamoto, Hiroki Yoshisako  and Tetsu Ichitsubo,
         The Journal of Physical Chemistry C, 127(42), 20956-20964 (2023).
      5. Alkali Cation Additives Assisting Magnesium Cation Intercalation in Hollandite-Type Manganese Dioxide Cathodes,
         Yue Qi, Hongyi Li, Kohei Shimokawa, Xiatong Ye, Tomoya Kawaguchi and Tetsu Ichitsubo,
         The Journal of Physical Chemistry C, 127(43), 21271-21278 (2023).
      6. Inserting a lithiation potential gap as a factor for degradation control in aluminum-foil anodes by utilizing roll-bonding processes,
         Hongyi Li, Shohei Nishimura, Yuki Nakata, Shingo Matsumoto, Takitaro Yamaguchi, Hiroaki Hoshikawa, Toshiaki Kumagai and Tetsu Ichitsubo,
         Journal of Materials Chemistry A, 11, 23311-23318 (2023).
      7. Photoinduced Nonvolatile Displacive Transformation and Optical Switching in MnTe Semiconductors,
         Hiroshi Tanimura,Shunsuke Mori,  Tetsu Ichitsubo, and Yuji Sutou,
         ACS Applied Materials & Interfaces (2023).
      8. Effect of interlayer K ordering on water intercalation behavior in δ-type layered manganese dioxide,
         Norihiko L. Okamoto, Hiroki Yoshisako, and Tetsu Ichitsubo,
         Energy Storage Materials, 61, 102912 (2023).
      9. Optimizing LiMn_1.5M_0.5O₄ cathode materials for aqueous photo-rechargeable batteries,
         Kohei Shimokawa, Shogo Matsubara, Tomoya Kawaguchi, Akihiro Okamoto, Tetsu Ichitsubo,
         Chemical Communications, 59, 7947-7950 (2023).
      10. Mg–Zn–Mn Oxide Systems for Rechargeable Mg-Battery Cathode,
          Xiatong Ye, Kohei Shimokawa, Yuto Kezuka, Takuya Hatakeyama, Hongyi Li, Tetsu Ichitsubo,
          The Journal of Physical Chemistry C, 127, 5210−5218 (2023).
      11. Ultraporous, Ultrasmall MgMn₂O₄ Spinel Cathode for a Room-Temperature Magnesium Rechargeable Battery，
          Hiroaki Kobayashi, Yu Fukumi, Hiroto Watanabe, Reona Iimura, Naomi Nishimura, Toshihiko Mandai, Yoichi Tominaga, Masanobu Nakayama, Tetsu Ichitsubo, Itaru Honma, and Hiroaki Imai，
          ACS Nano, 17(3), 3135–3142 (2023).
      12. Mg-ion storage materials based on MnO₂ frameworks,
          Kohei Shimokawa, Takuya Hatakeyama, Hongyi Li, Tetsu Ichitsubo,
          Current Opinion in Electrochemistry, 38, 101209 (2023).

2022

1. 1. 1. Three mechanical relaxation modes associated with nanoscale structural heterogeneity in Pd42.5Ni7.5Cu30P20 fragile glass,
         Hao Wang, Tetsu Ichitsubo, Hidemi Kato,
         The European Physical Journal Applied Physics, 98, 8 (2023).
      2. Examining Electrolyte Compatibility on Polymorphic MnO₂ Cathodes for Room Temperature Rechargeable Magnesium Batteries,
         Xiatong Ye, Hongyi Li, Takuya Hatakeyama, Hiroaki Kobayashi, Toshihiko Mandai, Norihiko L. Okamoto and Tetsu Ichitsubo
         ACS Applied Materials & Interfaces, 14, 56685 (2022).
      3. Influence of oxygen on the kinetics of omega and alpha phase formation in beta Ti-V,
         Robert Josef Enzinger, Martin Luckabauer, Norihiko L. Okamoto, Tetsu Ichitsubo, Wolfgang Sprengel, Roland Würschum,
         Metallurgical and Materials Transactions A, 54, 473–486 (2023).
      4. Laser-induced breakdown spectroscopy to obtain quantitative three-dimensional hydrogen mapping in nickel-metal-hydride battery cathode for interpreting its reaction distribution,
         Susumu Imashuku, Takumi Kamimura, Tetsu Ichitsubo, Kazuaki Wagatsuma,
         Analyst, 147, 5161 (2022).
      5. Light-induced Li extraction from LiMn2O4/TiO2 in a water-in-salt electrolyte for photo-rechargeable batteries,
         Kohei Shimokawa, Shogo Matsubara, Akihiro Okamoto, Tetsu Ichitsubo,
         Chemical Communications, 58, 9634 (2022).
      6. Nonthermal melting of charge density wave order via nucleation in VTe2,
         Hiroshi Tanimura, Norihiko L. Okamoto, Takao Homma, Yusuke Sato, Akihiro Ishii, Hitoshi Takamura and Tetsu Ichitsubo,
         Physical Review B,  105, 245402 (2022).
      7. Dendrite-free alkali-metal electrodeposition from contact-ion-pair state induced by mixing alkaline earth cation,
         Hongyi Li, Masaki Murayama and Tetsu Ichitsubo,
         Cell Reports Physical Science 3, 100907 (2022)
      8. Excellently balanced water-intercalation-type heat-storage oxide,
         Takuya Hatakeyama, Norihiko L. Okamoto, Satoshi Otake, Hiroaki Sato, Hongyi Li and Tetsu Ichitsubo,
         Nature Communications 13, 1452 (2022). (Selected as Editors’ Highlights; see “Materials science and chemistry” for details.)
      9. Influences of enhanced entropy in layered rocksalt oxide cathodes for lithium-ion batteries
         Tomoya Kawaguchi, Xiao Bian, Takuya Hatakeyama, Hongyi Li, Tetsu Ichitsubo,
         ACS Appl. Energy Mater. 5, 4369 (2022).
      10. Evaluating the Validity of a Hydrogen Mapping Method Based on Laser-induced Breakdown Spectroscopy
          Susumu Imashuku, Takumi Kamimura, Tomoya Kawaguchi, Tetsu Ichitsubo
          e-Journal of Surface Science and Nanotechnology 20, 7-12 (2022).
      11. Atomistic study on simultaneous achievement of partial crystallization and rejuvenated glassy structure in thermal process of metallic glasses,
          Masato Wakeda, Junji Saida and Tetsu Ichitsubo,
          Philosophical Magazine (2022).
      12. Metalloid substitution elevates simultaneously the strength and ductility of face-centered-cubic high-entropy alloys,
          Daixiu Wei, Liqiang Wang, Yongjie Zhang, Wu Gong, Tomohito Tsuru, Ivan Lobzenko, Jing Jiang, Stefanus Harjo, Takuro Kawasaki, Jae Wung Bae, Wenjun Lu, Zhen Lu, Yuichiro Hayasaka, Takanori Kiguchi, Norihiko L. Okamoto, Tetsu Ichitsubo, Hyoung Seop Kim, Tadashi Furuhara, Evan Ma, Hidemi Kato,
          Acta Materialia, 205, 117571 (2022).
      13. Thermal stability of MnO2 polymorphs,
          Takuya Hatakeyama, Norihiko L. Okamoto, *Tetsu Ichitsubo,
          Journal of Solid State Chemistry 305, 122683 (2022).
      14. 光相変化材料の超高速光応答とそのダイナミクス
          谷村　洋，河口智也，市坪　哲
          固体物理 Vol.57 (2022).

2021

1. 1. 1. Catalytic Mechanism of Spinel Oxides for Oxidative Electrolyte Decomposition in Mg Rechargeable Batteries,
         Jonghyun Han, Shunsuke Yagi, Hirokazu Takeuchi, Masanobu Nakayama, and Tetsu Ichitsubo,
         Journal of Materials Chemistry A, 9, 26401-26409 (2021).
      2. Accelerated kinetics revealing metastable pathways of magnesiation-induced transformations in MnO2 polymorphs,
         Takuya Hatakeyama, Hongyi Li, Norihiko L. Okamoto, Kohei Shimokawa, Tomoya Kawaguchi, Hiroshi Tanimura, Susumu Imashuku, Maximilian Fichtner, *Tetsu Ichitsubo,
         Chemistry of Materials 33, 6983–6996 (2021).
      3. Electrochemically Synthesized liquid-sulfur/sulfid composite materials for High-Rate Magnesium Battery Cathodes,
         Kohei Shimokawa, Takuya Furuhashi, Tomoya Kawaguchi, Won-Young Park, Takeshi Wada, Hajime Matsumoto, Hidemi Kato, Tetsu Ichitsubo,
         Journal of Materials Chemistry A 9, 16585-16593 (2021).
      4. Electrochemically Induced Strain Evolution in Pt−Ni Alloy Nanoparticles Observed by Bragg Coherent Diffraction Imaging,
         Tomoya Kawaguchi, Vladimir Komanicky, Vitalii Latyshev, Wonsuk Cha, Evan Maxey, Ross Harder, Tetsu Ichitsubo, Hoydoo You,
         Nano Letters 21, 5945–5951 (2021).
      5. Relaxation Behavior an Heterogeneous Structure of Metallic Glasses,
         Hiroshi Tanimura, Tomoki Hayashi, Martin Luckabauer, Tomoya Kawaguchi, Masato Wakeda, Hidemi Kato, Tetsu Ichitsubo,
         Journal of the Society of Materials Science, Japan (材料) 70, 374-380 (2021).
      6. Construction of supramolecular polymer hydrogel electrolyte with ionic channels for flexible supercapacitors,
         Kun-Peng Wang, Ye Yang, Qi Zhang,* Zhenyu Xiao, Lingbo Zong, Tetsu Ichitsubo, Lei Wang,
         Materials Chemistry Frontier 33, 2007539 (2021).
      7. Structure Design of Long-Life Spinel-Oxide Cathode Materials for Magnesium Rechargeable Batteries,
         Kohei Shimokawa, Taruto Atsumi, Norihiko L. Okamoto, Tomoya Kawaguchi, Susumu Imashuku, Kazuaki Wagatsuma, Masanobu Nakayama, Kiyoshi Kanamura, and Tetsu Ichitsubo,
         Advanced Materials 33, 2007539 (2021).
      8. Modelling Dilatometry Data of Isothermal ω-Phase Formation in a Strongly β-Stabilised TiV-Alloy,
         R. J. Enzinger, M. Luckabauer, T. Ichitsubo, & R. Wurschum,
         Materials Science Forum, 1016, 1851-1856 (2021).
      9. Modelling dilatometry data of isothermal ω-phase formation in a strongly β-stabilised TiV-alloy,
         Robert Josef Enzinger, Martin Luckabauer, Tetsu Ichitsubo, and Roland Würschum,
         Materials Science Forum 1016, 1851-1856 (2021).
      10. ブラッグコヒーレント回折イメージングを用いた材料中の変位場と歪場の可視化原理,
          河口 智也, 市坪 哲
          日本結晶学会誌 63 巻 2 号 p. 143-150 (2021).
          【学協会誌】
      11. 材料中の変位場と歪場を可視化するブラッグコヒーレント回折イメージングの実験手法,
          河口 智也, 市坪 哲
          日本結晶学会誌 63 巻 2 号 p. 151-158 (2021).
      12. マグネシウム蓄電池用正極材料の開発経緯と現状
          下川　航平・岡本　範彦・市坪　哲
          セラミックス, 日本セラミックス協会, Vol. 56, No. 5, pp.331–336 (2021).
      13. EQCM法を用いたMg2+イオンの挿入・脱離過程の解析
          八木俊介, 市坪哲,
          セラミックス, 日本セラミックス協会, Vol. 56, No. 5, pp.355–358 (2021).
      14. リチウム蓄電池用合金負極のサイクル特性向上：合金化に伴う巨大体積歪をいかに回避するか?,
          市坪 哲, 李弘毅,
          化学 76巻 2 号 p. 12-15 (2021).
      15. ＜HOT Topics＞リチウム電池用集電体一体型アルミ負極の開発，
          李 弘毅, 山口 滝太郎, 市坪 哲
          自動車技術 75巻1号，p.74-81 (2021).
      16. Next Generation Batteries, Realization of High Energy Density Rechargeable Batteries, Kiyoshi Kanamura (Ed.), Springer, Pages 491-499 (2021), eBook ISBN: 978-981-336-668-8, Hardcover ISBN: 978-981-336-667-1, doi: 10.1007/978-981-33-6668-8
          Tetsu Ichitsubo, Shunsuke Yagi
          Novel Mg Rechargeable Battery Cathodes: Chevrel to Spinel, Pages 491-499

2020

1. 1. 1. Evolution of microstructure and variations in mechanical properties accompanied with diffusionless isothermal omega transformation in beta-titanium alloys
         Norihiko L. Okamoto, Shuhei Kasatani, Martin Luckabauer, Robert Enzinger, Satoshi Tsutsui, Masakazu Tane, Tetsu Ichitsubo,
         Physical Review Materials 4, 123603 (2020).
      2. Nitrogen doping-induced local structure change in a Cr2Ge2Te6 inverse resistance phase-change material
         Yi Shuang, Shogo Hatayama, Hiroshi Tanimura, Daisuke Ando, Tetsu Ichitsubo and Yuji Sutou,
         Materials Advances 1, 2426-2432 (2020).
      3. Effects of solute oxygen on kinetics of diffusionless isothermal transformation in beta-titanium alloys
         Norihiko L. Okamoto, Shuhei Kasatani, Martin Luckabauer, Masakazu Tane, Tetsu Ichitsubo,
         Scripta Materialia 188, 88-91 (2020).
      4. Nonthermal Dynamics of Dielectric Functions in a Resonantly Bonded Photoexcited Material,
         Hiroshi Tanimura, Shinji Watanabe, Tetsu Ichitsubo,
         Advanced Functional Materials 30, 2002821 (2020).
      5. Search for vacancies in concentrated solid-solution alloys with fcc crystal structure,
         L. Resch, M. Luckabauer, N. Helthuis, N. L. Okamoto , T. Ichitsubo, R. Enzinger, W. Sprengel, and R. Würschum,
         Physical Review Materials 4, 060601(R) (2020). (Editors’ Suggestion)
      6. Circumventing huge volume strain in alloy anodes of lithium batteries,
         Hongyi Li, Takitaro Yamaguchi, Shingo Matsumoto, Hiroaki Hoshikawa, Toshiaki Kumagai, Norihiko L. Okamoto & Tetsu Ichitsubo,
         Nature Communications 11, 1584 (2020).
         2020 TOP 50 CHEMISTRY AND MATERIALS SCIENCES ARTICLES #NCOMTOP50
      7. Spinel-Rocksalt Transition as a Key Cathode Reaction Toward High-Energy-Density Magnesium Rechargeable Batteries,
         K. Shimokawa and T. Ichitsubo,
         Current Opinion in Electrochemistry 21, 93-99 (2020).
      8. Direct observation of elastic softening just after femtosecond-laser excitation in a phase-change material,
         T. Kawaguchi, K. Tokuda, S. Okada, M. Yabashi, T. Ichitsubo, N. Yamada, E. Matsubara,
         Physical Review B 101, 060302(R) (2020).
      9. 多価カチオンを利用した新型蓄電デバイス開発に向けた基礎的研究,
         李弘毅, 下川航平, 岡本範彦, 市坪哲,
         まてりあ 59 巻 8 号 p. 413-421　(2020).

2019

1. 1. 1. Gas-Induced Segregation in Pt-Rh Alloy Nanoparticles Observed by In Situ Bragg Coherent Diffraction Imaging,
         T. Kawaguchi, T. F. Keller, H. Runge, L. Gelisio, C. Seitz, Y.Y. Kim, E. R. Maxey, W. Cha,  A. Ulvestad, S. O. Hruszkewycz, R. Harder, I. A. Vartanyants, A. Stierle, H. You,
         Physical Review Letters, 123, 246001 (2019)
      2. Electrochemical phase transformation accompanied with Mg extraction and insertion in a spinel MgMn₂O₄ cathode material,
         T.Hatakeyama, N. L. Okamoto, K. Shimokawa, H. Li, A. Nakao, Y. Uchimoto, H. Tanimura, T. Kawaguchi, T. Ichitsubo,
         Physical Chemistry Chemical Physics, 21,23749-23757 (2019).
      3. Suppressive effect of Fe cations in Mg(Mn1-xFex)2O4 positive electrodes on oxidative electrolyte decomposition for Mg rechargeable batteries,
         J. Han, S. Yagi, T. Ichitsubo,
         Journal of Power Sources 435, 226822 (2019).
      4. Zinc-Based Spinel Cathode Materials for Magnesium Rechargeable Batteries: Toward the Reversible Spinel-Rocksalt Transition,
         K. Shimokawa, T. Atsumi, M. Harada, R. E. Ward, M. Nakayama, Y. Kumagai, F. Oba, N. L. Okamoto, K. Kanamura, T. Ichitsubo,
         Journal of Materials Chemistry A 7, 12225  (2019).
      5. Diffusionless isothermal omega transformation in titanium alloys driven by quenched-in compositional fluctuations,
         M. Tane, H. Nishiyama, A. Umeda, N. L. Okamoto, K. Inoue, M. Luckabauer, Y. Nagai, T. Sekino, T. Nakano, T. Ichitsubo,
         Physical Review Materials 3, 043604 (2019).
      6. Decreasing activation energy of fast relaxation processes in a metallic glass during aging,
         Martin Luckabauer, Tomoki Hayashi, Hidemi Kato, and Tetsu Ichitsubo,
         Physical Review B(R) 99, 140202(R) (2019).
      7. Feasible Transformation of MgCo₂O₄ from Spinel to Defect Rocksalt Structure under Electron Irradiation,
         N. L. Okamoto, K. Shimokawa, H. Tanimura, T. Ichitsubo,
         Scripta Materialia, 167, 26-30 (2019).
      8. “CHAPTER 11. Mg–Li Dual-cation Batteries”
         Hongyi Li, Tetsu Ichitsubo , Eiichiro Matsubara,
         Magnesium Batteries: Research and Applications, edited by Maximilian Fichtner, The Royal Society of Chemistry, SEP 2019

2018

1. 1. 1. Fast diffusion of multivalent ions facilitated by concerted interactions in dual-ion battery systems,
         H. Li, N. L. Okamoto, T. Hatakeyama, Y. Kumagai, F. Oba and T. Ichitsubo,
         Advanced Energy Materials 8, 1801475 (2018).
      2. Strain-Induced Stabilization of Charged State in Li-Rich Layered Transition Metal Oxide for Lithium Ion Batteries,
         T. Kawaguchi, M. Sakaida, M. Oishi, T. Ichitsubo, K. Fukuda, S. Toyoda and E. Matsubara,
         The Journal of Physical Chemistry Part C (2018).
      3. Solvation-Structure Modification by Concentrating Mg(TFSA)₂-MgCl2-Triglyme Ternary Electrolyte,
         K. Shimokawa, H. Matsumoto, and T. Ichitsubo,
         The Journal of Physical Chemistry Letters 9, 4732-4737 (2018).
      4. Irreversible thermodynamics of ideal plastic deformation,
         K. Ogawa, T. Ichitsubo, S. Ishioka,
         Cogent Physics 5, 1496613 (2018).
      5. Distortion of local atomic structures in amorphous Ge-Sb-Te phase change materials,
         A. Hirata, T. Ichitsubo, P. F. Guan, T. Fujita, and M. W. Chen,
         Physical Review Letters 120, 205502 (2018).
      6. マグネシウム電池：正極材料の基礎研究,
         市坪 哲,
         OHM 2018年11月号.

2017

1. 1. 1. Constructing metal-anode rechargeable batteries utilizing concomitant intercalation of Li-Mg dual cations into Mo6S8,
         H. Li, T. Ichitsubo , S. Yagi, E. Matsubara,
         Journal of Materials Chemistry A 5, 3534-3540 (2017).