“Sequential structural evolution triggered by O-O dimerization in oxygen-redox reactions”, X. M. Shi, K. Kawai, M. Okubo, A. Yamada, Adv. Energy Mater., 2025, 2405714.
“Proton Intercalation into an Open-Tunnel Bronze Phase with Near-Zero Volume Change”, K. Kawai, S. H. Jang, Y. Igarashi, K. Yazawa, K. Gotoh, J. Kikkawa, A. Yamada, Y. Tateyama, M. Okubo, Angew. Chem. Int. Ed., 2025, 64, e202410971.
“Machine learning-assisted survey on charge storage of MXenes in aqueous electrolytes”, K. Kawai, Y. Ando, M. Okubo, Small Methods, 2025, 9, 2400062.
2024
“Li2NbHO2: a new transition-metal oxyhydride with rock-salt-type structure”, F. Takeiri, K. Kusumoto, K. Kawai, H. Yaguchi, T. Saito, K. Mori, S. Hosokawa, M. Okubo, G. Kobayashi, ChemComm, 2024, 60, 14388-14390.
“MXene electrodes for all strain-free solid-state batteries”, K. Kawai, H. Lee, Y. Nomura, M. Fujita, H. Kitaura, E. Hosono, H. Nakajima, H. Tsukasaki, S. Mori, A. Sakuda, A. Hayashi, N. Yabuuchi, Y. M. Lee, M. Okubo, ACS Appl. Mater. Interfaces, 2024, 16, 57377-57385.
“Redox materials for electrochemical capacitors”, M. Abdollahifar, T. Brousse, G. Z. Chen, M. Chiku, O. Crosnier, B. Dunn, K. Fic, C.-C. Hu, P. Jeżowski, A. Maćkowiak, K. Naoi, N. Ogihara, N. Okita, M. Okubo, W. Sugimoto, N.-L. Wu, Electrochemistry, 2024, 92, 074002.
“Valence study of Li(Ni0.5Mn0.5)1-xCoxO2 and LiNi1-xCoxO2: The role of charge transfer and charge disproportionation”, D. Takegami, K. Kawai, M. Ferreira-Carvalho, S. Roßler, C. E. Liu, C. Y. Kuo, C. F. Chang, A. Minamida, T. Miyazaki, M. Okubo, L. H. Tjeng, T. Mizokawa, Phys. Rev. Mater., 2024, 8, 055401.
“The role of the local structural properties in the electrochemical characteristics of Na1-xFe1-yNiyO2 cathodes”, S. Baiju, P. Kaghazchi, C. Marini, B. Mortemard de Boisse, M. Okubo, A. Yamada, T. Mizokawa, N. L. Saini, L. Simonelli, Mater. Today Energy, 2024, 40, 101519.
“Reversible Oxygen-Redox Reaction for High-Capacity Positive Electrodes”, M. Okubo, Chapter 37, Interface Ionics, Springer Nature, 2024.
2023
“Iron-based catholytes for aqueous redox-flow batteries”, A. Okazawa, T. Kakuchi, K. Kawai, M. Okubo, APL Mater., 2023, 11, 110901.
“High-voltage electrochemical properties of lithium-rich spinel oxides”, K. Kawai, T. Sudayama, D. Asakura, J. Kikkawa, E. Watanabe, M. Okubo, A. Yamada, J. Phys. Chem. C, 2023, 127, 12428-12434.
“High-rate decoupled water electrolysis system integrated with α-MoO3 as a redox mediator with fast anhydrous proton kinetics”, Z. Ma, X. Lu, S. Park, T. Shinagawa, M. Okubo, K. Takanabe, A. Yamada, Adv. Funct. Mater., 2023, 2214466.
“Machine learning-based comprehensive survey on lithium-rich cathode materials”, A. Tsuchimoto, M. Okubo, A. Yamada, Electrochemistry, 2023, 3, 037007.
“Investigating the Local Structure of Ti Based MXene Materials by Temperature Dependent X-Ray Absorption Spectroscopy”, W. Olszewski, C. Marini, S. Kajiyama, M. Okubo, A. Yamada, T. Mizokawa, N. L. Saini, L. Simonelli, Phys. Chem. Chem. Phys, 2023, 25, 3011-3019.
“Effect of oxygen hole in Li2MnO3 revealed by hard x-ray photoemission spectroscopy and band structure calculations”, K. Morita, M. Itoda, E. Hosono, D. Asakura, M. Okubo, Y. Takagi, A. Yasui, N. L. Saini, T. Mizokawa, J. Phys. Soc. Jpn, 2023, 92, 014702.
“Influence of surface termination groups on electrochemical charge storage of MXene electrodes”, K. Kawai, M. Fujita, R. Iizuka, A. Yamada, M. Okubo, 2D Mater., 2023, 10, 014012.
2022
“Iron sulfide Na2FeS2 as Positive Electrode Material with High Capacity and Reversibility Derived from Anion–Cation Redox in All-Solid-State Sodium Batteries”, A. Nasu, T. Kimura, M. Deguchi, A. Tsuchimoto, M. Okubo, A. Yamada, A. Sakuda, M. Tatsumisago, A. Hayashi, Small, 2022, 2203383.
“Anhydrous fast proton transport boosted by hydrogen bond network in a dense oxide-ion array of α-MoO3”, Z. Ma, X. M. Shi, S. Nishimura, S. Ko, M. Okubo, A. Yamada, Adv. Mater. 2022, 34, 2203335.
“Operando resonant soft X-ray emission spectroscopy of LiMn2O4 cathode using an aqueous electrolyte solution”, D. Asakura, Y. Nanba, H. Niwa, H. Kiuchi, J. Miyawaki, M. Okubo, H. Matsuda, Y. Harada,E. Hosono, Phy. Chem. Chem. Phy. 2022, 24, 19177-19183.
“Lithium-rich O2-type Li0.66[Li0.22Ru0.78]O2 positive electrode material”, H. Umeno, K. Kawai, S. Nishimura, D. Asakura, M. Okubo, A. Yamada, J. Electrochem. Soc. 2022, 169, 040536.
“Kinetic square scheme in oxygen-redox battery electrodes”, K. Kawai, X. M. Shi, N. Takenaka, J. Jang, B. Mortemard de Boisse, A. Tsuchimoto, D. Asakura, J. Kikkawa, M. Nakayama, M. Okubo, A. Yamada, Energy Environ. Sci. 2022, 15, 2591-2600.
“Relationship between electric double-layer structure of MXene electrode and its surface functional groups”, T. Shimada, N. Takenaka, Y. Ando, M. Otani, M. Okubo, A. Yamada, Chem. Mater. 2022, 34, 2069-2075.
“Oxygen redox versus oxygen evolution in aqueous electrolytes: critical influence of transition metals”, H. Umeno, K. Kawai, D. Asakura, M. Okubo, A. Yamada, Adv. Sci., 2022, 2104907.
“Square-scheme electrochemistry in battery electrodes”, M. Okubo, K. Kawai, Z. Ma, A. Yamada, Acc. Mater. Res., 2022, 3, 33-41.
2021
“Soft X-Ray Emission Studies on Hydrate-Melt Electrolytes”, T. Shimada, N. Takenaka, E. Watanabe, Y. Yamada, Y. T. Cui, Y. Harada, M. Okubo, A. Yamada, J. Phys. Chem. C, 2021, 125, 11534-11539.
“Visualization of Structural Heterogeneities in Particles of Lithium Nickel Manganese Oxide Cathode Materials by Ptychographic X-ray Absorption Fine Structure”, H. Uematsu, N. Ishiguro, M. Abe, S. Takazawa, J. Kang, E. Hosono, N. Duong Nguyen, H. C. Dam, M. Okubo, Y. Takahashi, J. Phys. Chem. Lett., 2021, 12, 5781-5788.
“Waste heat harvesting: Descriptor of thermogalvanic cell”, M. Okubo, J. Phys. Soc. Jpn., 2021, 18, 07.
“Nonpolarizing oxygen-redox capacity without O-O dimerization in Na2Mn3O7”, A. Tsuchimoto, X. M. Shi, K. Kawai, B. Mortemard de Boisse, J. Kikkawa, D. Asakura, M. Okubo, A. Yamada, Nature Commun., 2021, 12, 631.
“Optimal water concentration for aqueous Li+ intercalation in vanadyl phosphate”, D. Sun, M. Okubo, A. Yamada, Chem. Sci., 2021, 12, 4450-4454.
“Designing positive electrodes with high energy density for lithium-ion batteries”, M. Okubo, S. Ko, D. Dwibedi, A. Yamada, J. Mater. Chem. A, 2021, 9, 7407-7421.
Before 2020 (selected papers)
“Multiorbital bond formation for stable oxygen-redox reaction in battery electrodes”, T. Sudayama, K. Uehara, T. Mukai, D. Asakura, X.-M. Shi, A. Tsuchimoto, B. Mortemard de Boisse, T. Shimada, E. Watanabe, Y. Harada, M. Nakayama, M. Okubo, A. Yamada, Energy Environ. Sci., 2020, 13, 1492–1500.
“Coulombic self-ordering upon charging a large-capacity layered cathode material for rechargeable batteries”, B. Mortemard de Boisse, M. Reynaud, J. Ma, J. Kikkawa, S. Nishimura, M. Casas-Cabanas, C. Delmas, M. Okubo, A. Yamada, Nature Commun., 2019, 10, 2185.
“Negative dielectric constant of water confined in nanosheets”, A. Sugahara, Y. Ando, S. Kajiyama, K. Yazawa, K. Gotoh, M. Otani, M. Okubo, A. Yamada, Nature Commun., 2019, 10, 850.
“MXene as a Charge Storage Host”, M. Okubo, A. Sugahara, S. Kajiyama, A. Yamada, Acc. Chem. Res., 2018, 51, 591-599.
“Intermediate honeycomb ordering to trigger oxygen redox chemistry in layered battery electrode”, B. Mortemard de Boisse, G. Liu, J. Ma, S. Nishimura, S.-C. Chung, H. Kiuchi, Y. Harada, J. Kikkawa, Y. Kobayashi, M. Okubo, A. Yamada, Nature Commun., 2016, 7, 11397.
“Pseudocapacitance of MXene Nanosheets for High-Power Sodium-Ion Hybrid Capacitors”, X. Wang, S. Kajiyama, H. Iinuma, E. Hosono, S. Oro, I. Moriguchi, M. Okubo, A. Yamada, Nature Commun., 2015, 6, 6544.
“Bimetallic Cyanide Bridged Coordination Polymers as Lithium ion Cathode Materials: Core@Shell Nanoparticles with Enhanced Cyclability.”, D. Asakura, C. H. Li, Y. Mizuno, M. Okubo, H. S. Zhou, D. R. Talham, J. Am. Chem. Soc., 2013, 135, 2793-2799.
“Ion-induced transformation of magnetism in a bimetallic CuFe Prussian blue analgue.”, M. Okubo, D. Asakura, Y. Mizuno, T. Kudo, H. S. Zhou, A. Okazawa, N. Kojima, K. Ikedo, T. Mizokawa, I. Honma, Angew. Chem. Int. Ed., 2011, 50, 6269-6273.
“Control of charge transfer phase transition and ferromagnetism by photoisomerization of spiropyran for an organic-inorganic hybrid system, (SP)[FeIIFeIII(dto)] (SP = spiropyran, dto = C2O2S2).”, N. Kida, M. Hikita, I. Kashima, M. Okubo, M. Itoi, M. Enomoto, K. Kato, M. Takata, N. Kojima, J. Am. Chem. Soc., 2009, 131, 212-220.
“Nanosize effect on high-rate Li-ion intercalation in LiCoO2 electrode”, M. Okubo, E. Hosono, J.-D. Kim, M. Enomoto, N. Kojima, T. Kudo, H. Zhou, I. Honma, J. Am. Chem. Soc., 2007, 129, 7444-7452.