We publish papers in which some of the authors are researchers affiliated with our center.
Battery and Cell Materials Field
Florian Stainer, Junji Akimoto, Yoshitaka Matsushita, Kazutaka Mitsuishi, Kazunori Takada, H. Martin R. Wilkening, Journal of Materials Chemistry A 14, 20491-20503 (2026). "From lithium to proton mobility in garnet electrolytes: an NMR and conductivity study of H5.2Li1.3La3Zr1.5Ta0.5O12"
DOI:10.1039/D5TA09970F
AI-Generated Summary:In this study, polycrystalline garnet oxide HLZTO was synthesized by Li⁺/H⁺ exchange, and its lithium and proton transport properties were evaluated using NMR and X-ray analysis. It was revealed that in HLZTO, protons mainly carry charge, and conductivity decreases with proton loss upon heating.
Takashi Yabu, Haruki Shinohara, Reona Iimura, Ruijie Zhu, Akira Nasu, Shin Kiyohara, Naoto Kitamura, Toshihiko Mandai, Yu Kumagai, Masaki Matsui, Hiroaki Kobayashi, ACS Applied Energy Materials 9, 6487-6496 (2026). "Substitutional Design of Nanosized α-MnO2 Cathode for Rechargeable Magnesium Battery"
DOI:10.1021/acsaem.6c00722
AI-Generated Summary:In this study, we showed that Ti-substituted nano-α-MnO₂ cathodes greatly enhance Mg²⁺ transport. Near Ti sites, the Mg migration barrier decreases, leading to reduced polarization and improved capacity retention. Heteroatom substitution is an effective strategy for designing multivalent ion batteries.
Yingying Cheng, Masaki Takeguchi, Abraham Castro Garcia, Ken Sakaushi, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 65, e2469199-1-e2469199-11 (2026). "Accelerated Discovery-to-Unveiling of High-Performance and Affordable Ammonia Electrode Process by Human-Machine Collaboration Framework"
DOI:10.1002/anie.2469199
AI-Generated Summary:In this study, using human–machine collaborative descriptor design, we rapidly discovered the FeCoNiCuGa catalyst and showed its high ammonia production performance as well as the crucial role of *NO₂⁻ adsorption in reaction efficiency. These results demonstrate the effectiveness of this approach for accelerating the discovery and elucidation of new electrode reactions.
Tanka Raj Rana, Mazhar Abbas, Ethan Schwartz, Dhruba B. Khadka, Tucker Murrey, Jinyang Cai, Joseph Sweitzer, Hannah Contreras, Qian-Qian Zhang, John Devin MacKenzie, ACS Energy Letters 11, 4420-4427 (2026). "Scalable Buried Passivation of Wide-Bandgap Perovskite Solar Cells"
DOI:10.1021/acsenergylett.6c00439
AI-Generated Summary:In this study, using a scalable buried-passivation approach with slot-die-coated 4F-PEAI layers, we achieved defect suppression and efficiency improvement in perovskite solar cells. The PCE reached 19.7%, demonstrating that this is an effective method for large-area fabrication.
Reona Iimura, M. D. Hashan C. Peiris, Takashi Yabu, Toshihiko Mandai, Ruijie Zhu, Akira Nasu, Saneyuki Ohno, Masaki Matsui, Itaru Honma, Manuel Smeu, Hiroaki Kobayashi, Advanced Energy Materials 16, e71006-1-e71006-12 (2026). "Ultra-Low-Strain Calcium and Magnesium Ion Storage Enabled by Tunnel-Structured MoO3 Positive Electrode"
DOI:10.1002/aenm.71006
AI-Generated Summary:In this study, we developed hexagonal tunnel-structured MoO₃ nanoparticles as a positive electrode material, achieving reversible storage and high capacity for Ca²⁺ and Mg²⁺. We clarified the operation with minimal lattice expansion while maintaining the host structure, showing the potential for high-performance divalent metal batteries.
Shuto Fujisawa, Kei Hashimoto, Ryota Tamate, Yuji Kamiyama, Kei Nishikawa, Yohei Miwa, Shoichi Kutsumizu, Takamasa Sakai, Koichi Mayumi, ACS Applied Materials & Interfaces 18, 32697-32706 (2026). "Decoupling Stiffness and Toughness in Solid Polymer Electrolytes via Reversible Crystallization"
DOI:10.1021/acsami.6c05382
AI-Generated Summary:In this study, we proposed a design for Tetra-PEG-based SPEs that enhances toughness without increasing stiffness by utilizing strain-induced crystallization. By adding thermally reversible crystals, both stiffness and thermoplasticity were achieved, enabling stable long-term operation and overcoming conventional trade-offs.
Marcela Calpa, Randy Jalem, Taiga Ozawa, Minako Nishioka, Anna Myojin, Gen Hasegawa, Naoaki Kuwata, Shoichi Matsuda, Kei Kubota, Kazunori Takada, CHEMISTRY OF MATERIALS 38, 5579-5587 (2026). "Modulating Redox Pathways in Manganese-Based Disordered Rocksalt Cathodes via Molybdenum Incorporation"
DOI:10.1021/acs.chemmater.6c00304
AI-Generated Summary:In this study, by doping Mo into Mn-based disordered rocksalt oxides, Mn-dominated charge compensation was achieved, yielding a capacity over 300 mAh/g and high stability. This demonstrates that controlling redox pathways through compositional and electronic structure design provides new guidelines for positive electrode materials development.
Halimah Harfah, Yoshitaka Tateyama, Kazunori Takada, Randy Jalem, Journal of Materials Chemistry A 14, 17385-17401 (2026). "Lithium superionic behavior and defect robustness in LiNbOCl4: a first-principles molecular dynamics study"
DOI:10.1039/d5ta05478h
AI-Generated Summary:In this study, we analyzed Li-ion conductivity in LiNbOCl₄ and LiCl-defected systems by AIMD, revealing that cooperative anion lattice dynamics support low-barrier transport. Even under defect conditions, high conductivity is maintained, demonstrating that LiNbOCl₄ is a defect-tolerant solid electrolyte candidate.
Jittraporn Saengkaew, Lukas Herbers, Martin Winter, Shoichi Matsuda, Peter Bieker, Batteries & Supercaps 9, e70329-1-e70329-8 (2026). "Solid-State Lithium Metal Rechargeable Batteries With High-Mass-Loading NMC Electrode and Multilayer Hybrid Solid Electrolyte Thin-Film"
DOI:10.1002/batt.70329
AI-Generated Summary:In this study, we developed a solid-state lithium metal battery using an NMC622 positive electrode with an ionic liquid-based combined electrolyte, achieving a capacity exceeding 160 mAh/g even at high mass loading. The introduction of cE demonstrated the feasibility of high energy density batteries.
Zehao Xu, Hiroaki Furuse, Shogo Miyoshi, Tohru S. Suzuki, JOURNAL OF THE AMERICAN CERAMIC SOCIETY 109, e71031-1-e71031-11 (2026). "Transparent Er:(Y,La)2O3 Ceramics With High La3+ Concentration for Mid‐Infrared Laser Applications"
DOI:10.1111/jace.71031
AI-Generated Summary:In this study, we evaluated the mid-infrared emission properties of Er:Y₂O₃ ceramics with high La³⁺ concentrations and demonstrated increases in emission spectral width and lifetime, as well as improvements in transmittance via HIP. We clarified the potential for application as high-performance mid-infrared laser materials with high La³⁺ content.
Pandeeswari Jayaraman, Zhongting Wang, Vinoth Packianathan Thangam, Mohamed M. Abdelaal, Hongling Zhou, Kei Nishikawa, Kiyoshi Kanamura, Masashi Kotobuki, Journal of Energy Storage 177, 123569-1-123569-9 (2026). "Effect of ClO4 and FSI anions in EC:PC electrolyte on charge-transfer resistance of LiFePO4 cathode measured by the single-particle measurement"
DOI:10.1016/j.est.2026.123569
AI-Generated Summary:In this study, we investigated the effect of anion species in EC:PC electrolytes on the charge-transfer resistance of the LiFePO₄ cathode. The FSI system showed lower Rct and superior rate performance compared to the ClO₄ system, and it was clarified that differences in anion structure and desolvation energy were the main factors.
Prince Sharma, Gen Hasegawa, Sihao Xing, Naoaki Kuwata, ACS Applied Electronic Materials 8, 4855-4875 (2026). "Advancing Solid State Batteries via Thin Film Electrolytes Fabricated by Pulsed Laser Deposition"
DOI:10.1021/acsaelm.6c00171
AI-Generated Summary:In this study, we discuss the critical role of thin-film solid electrolytes (TFSEs) in the miniaturization and high performance of solid-state batteries, and indicate guidelines for scaling up from laboratory to practical use through precise film fabrication using PLD and real-time analysis.
Yushi Fujita, Yuta Ito, Tomonari Takeuchi, Randy Jalem, Naoaki Kuwata, Kazunori Takada, Toyoki Okumura, INORGANIC CHEMISTRY 65, 15905-15913 (2026). "Effects of Sr2+ Doping on Phase Stability and Lithium-Ion Conductivity in Pyrochlore-type Oxyfluoride Solid Electrolytes"
DOI:10.1021/acs.inorgchem.6c02385
AI-Generated Summary:In this study, Sr²⁺ doping in pyrochlore-type oxide Li₁.₂₅La₀.₅₈Nb₂O₆F was investigated. Although substitution and lattice expansion were observed, ionic conductivity decreased. This shows that structural constraints and compositional optimization are important guidelines for designing high-conductivity solid electrolytes.
Shanas Fatima, Masatoshi Yanagida, Yasuhiro Shirai, Sunil Kumar Singh, Dhruba B. Khadka, APPLIED SURFACE SCIENCE 749, 167878-1-167878 (2026). "Iodine-assisted defect control in AgBiI4 for boosting lead-free photovoltaics"
DOI:10.1016/j.apsusc.2026.167878
AI-Generated Summary:In this study, we clarified that elemental iodine addition improves the crystallinity and suppresses defects in AgBiI₄ films, increasing the solar cell efficiency from 0.96% to 2.3%. This shows that iodine addition is effective for improving the performance of lead-free Ag–Bi–I solar cells.
Reona Iimura, Shinnosuke Tachibana, Itaru Honma, Hiroaki Kobayashi, CHEMICAL COMMUNICATIONS 62, 14841-14844 (2026). "Porous and conductive 3D-hierarchical carbon lattice for uniform Zn and Mn oxide electrodeposition toward 3D zinc-ion batteries"
DOI:10.1039/d6cc02888h
AI-Generated Summary:In this study, by combining a porous 3D carbon framework with embedded CNTs and electrodeposition of Zn and Mn oxides, it was shown that uniform electrodeposition and stable three-dimensional Zn-ion battery electrodes can be achieved.
Akihiro Nomura, Daiki Iwasaki, Shota Azuma, Fumisato Ozawa, Morihiro Saito, JOURNAL OF THE ELECTROCHEMICAL SOCIETY 173, 150506-1-150506-10 (2026). "Stable and Dendrite-Suppressed Li–Mg Alloy Anode for Lithium–Air Batteries"
DOI:10.1149/1945-7111/ae8ebd
AI-Generated Summary:In this study, it was demonstrated that Li–Mg alloy anodes with added Mg exhibit stable cycling, suppress dendrite formation, and achieve both a high energy density of 530 Wh/kg and enhanced safety. Li–Mg alloys provide new design guidelines for practical LAB anodes.
Shaofan Lyu, Satoshi Kajiyama, Kosuke Kawai, Chia-Ching Lin, Denis Y. W. Yu, Masashi Okubo, LANGMUIR 42, 17435-17443 (2026). "Acid-Assisted Surface Modification of O3-type Sodium Layered Oxides for Long-Life and Safe Sodium-Ion Batteries"
DOI:10.1021/acs.langmuir.6c01260
AI-Generated Summary:In this study, we showed that simple phosphoric and boric acid treatments can convert impurities on sodium-layered oxide cathodes into protective layers, greatly improving interfacial and thermal stability. It was clarified that surface engineering is important for developing safe sodium-ion batteries.
Denis Y.W. Yu, Qiaohui Duan, Sébastien De Windt, JOURNAL OF POWER SOURCES 686, 240524-1-240524-10 (2026). "In-operando Techniques to Quantify Gas Generation and Deposition/Stripping Processes on Zinc Electrodes"
DOI:10.1016/j.jpowsour.2026.240524
AI-Generated Summary:In this study, we quantitatively evaluated the gas generation and electrode surface roughness in zinc-ion batteries during operation. We clarified that cycling increases surface roughness and gas generation, while higher salt concentration suppresses these changes. This contributes to understanding the relationship between electrode evolution and gas generation.
Yiyi Zheng, Jiapei Li, Tian Zhang, Shuyu Dong, Qiaohui Duan, Zhiqiang Guan, Dewu Lin, Wenjun Zhang, Denis Y.W. Yu, Chemical Engineering Journal 540, 177665-1-177665-9 (2026). "Optimizing solvation structure of electrolyte to improve ion transport and reduce interphase resistance for fast-charging Li-ion batteries"
DOI:10.1016/j.cej.2026.177665
AI-Generated Summary:In this study, using an MA/FEC mixed electrolyte, we showed that increasing the MA ratio optimizes solvation structure, physical properties, and SEI, improving fast-charging performance of graphite anodes. A high capacity of 210 mAh/g was achieved even at 6C.
Chia-Ching Lin, Péter Udvarhelyi, Hao-Hsiang Chang, Tsung-Yi Chen, Zhenfei Cai, Yu Zhao, Han-Yi Chen, Denis Y.W. Yu, Chemical Engineering Journal 545, 179544-1-179544-14 (2026). "Regulating cation disorder to stabilize oxygen redox in Li-rich DRX cathodes via Fe substitution"
DOI:10.1016/j.cej.2026.179544
AI-Generated Summary:In this study, Fe substitution enabled both reversible anionic redox and structural homogenization in Mn-based DRX cathodes, achieving high performance of 247 mAh/g and 90.4% efficiency. Transition-metal substitution was shown to regulate electronic states and structural stability, providing effective guidelines for designing high-energy cathodes.
Aman Shukla, Mai Otake, Masatoshi Yanagida, Koichi Yamashita, Azusa Muraoka, Yasuhiro Shirai, Dhruba B. Khadka, Journal of Materials Chemistry A 14, 31131-31142 (2026). "Unraveling the effect of binary metal fluoride in tin perovskite solar cells"
DOI:10.1039/d6ta04025j
AI-Generated Summary:In this study, it was demonstrated that using additives like BaF₂ controls crystallinity, defects, and electronic structure of tin-based FASnI₃ perovskite, and SrF₂ achieved high efficiency of 12.7% with stable operation. The correlation among defects, structure, and transport is important for the design of lead-free PSCs.
Dedy Setiawan, Toshihiko Mandai, Advanced Science 13, e75749-1-e75749-13 (2026). "Mixed‐Coordination Electrolytes With Molecular Additives for Robust Interphases in High‐Voltage Rechargeable Magnesium Batteries"
DOI:10.1002/advs.75749
AI-Generated Summary:In this study, the use of a mixed-coordination electrolyte with a molecular additive (MCE-MA) greatly improved the high-voltage durability and cycling stability of magnesium batteries. Optimization of interphase formation was shown to be key for long-cycle life and high performance operation.
Shaofan Lyu, Satoshi Kajiyama, Chia-Ching Lin, Denis Y. W. Yu, Masashi Okubo, JOURNAL OF THE ELECTROCHEMICAL SOCIETY 173, 140507-1-140507-6 (2026). "Compositional Determinants of Thermal Stability in O3-Type Layered Oxides for Sodium-Ion Battery Cathodes"
DOI:10.1149/1945-7111/ae888e
AI-Generated Summary:In this study, the thermal stability of Ni–Fe–Mn based NaMO₂ cathodes was systematically investigated using DSC, and it was revealed that Ni increases reactivity and TSI while Fe contributes to stabilization. This provides useful guidelines for designing highly thermally stable SIB cathode materials.
Wenqin Peng, Shigenobu Hayashi, Abraham Castro Garcia, Lei Fang, Masaki Takeguchi, Yibin Xu, Ken Sakaushi, SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 27, 2713992-1-2713992-12 (2026). "Interpretable data-driven discovery of high-performance multielement metal oxide electrocatalysts for oxygen evolution reaction from a small hybrid dataset"
DOI:10.1080/14686996.2026.2713992
AI-Generated Summary:In this study, it was demonstrated that a high-performance OER catalyst can be discovered from a large material space in a short period by using only 557 hybrid data and interpretable AI. The newly discovered quinary oxide showed about 20 times the activity of IrO₂.
Tai Kobayashi, Ryosuke Nishikubo, Yusuke Tomiyori, Fumitaka Ishiwari, Daisuke Asakura, Eiji Hosono, Miho Kitamura, Hisao Kiuchi, Yoshihisa Harada, Akinori Saeki, ADVANCED FUNCTIONAL MATERIALS 36, e76809-1-e76809-10 (2026). "Water Adsorption‐Induced Color Sensor: Insight Into the Sensing Mechanism and Interfacial Engineering for Improved Responsiveness"
DOI:10.1002/adfm.76809
AI-Generated Summary:In this study, in situ XAS analyzed the water response of SbSI:Sb₂S₃/TiO₂ photovoltaic devices, revealing that water reactions on the TiO₂ surface contribute to wavelength sensitivity and response speed. Furthermore, introducing a hydrophilic layer improved performance and enabled color recognition.
Kunie Ishioka, Gerson Mette, Steven Youngkin, Andreas Beyer, Wolfgang Stolz, Kerstin Volz, Christopher J Stanton, Ulrich Höfer, JOURNAL OF PHYSICS-CONDENSED MATTER 38, 175001-1-175001-15 (2026). "Robust coherent phonon mode at GaP/Si(001) heterointerface"
DOI:10.1088/1361-648X/ae60d8
AI-Generated Summary:In this study, we investigated the influence of a two-step growth process of GaP on Si(001) on ultrafast carrier and phonon dynamics, and demonstrated that the 2 THz interfacial phonon mode is stable against high-temperature overgrowth. Its amplitude depends on coupling with interfacial electronic transitions and atomic-scale structural reorganization, providing insights into the interaction of carrier and phonon dynamics and interface design during the growth process.
Deep Singh, Masatoshi Yanagida, Yasuhiro Shirai, Sudhanshu Mallick, Dhruba B. Khadka, SOLAR ENERGY MATERIALS AND SOLAR CELLS 301, 114322-1-114322-9 (2026). "Unraveling perovskite solar cell degradation via interfacial surface recombination and ion migration by analytical and drift–diffusion modeling"
DOI:10.1016/j.solmat.2026.114322
AI-Generated Summary:In this study, the degradation mechanism of perovskite solar cells was clarified by combining physical modeling and drift–diffusion simulations. It was shown that increased ionic concentration promotes trap-assisted recombination, a major factor in efficiency decline, and the synergistic effects of surface recombination, charge transport, and mobile ions were revealed. Strategies to suppress these effects for stabilization were also indicated. This research contributes to the design of high-efficiency PSCs.
Kazuhiro Nemoto, Cong Zhang, Daiki Kido, Daniel Limouchi, Masaki Takeguchi, Hong-Tao Sun, Naoto Shirahata, CHEMISTRY OF MATERIALS 38, 3486-3495 (2026). "Tailored Pnictogen Precursor Chemistry Enables Metal-Hydride-Free Selective Synthesis of InP₁₋ₓSbx Quantum Dots"
DOI:10.1021/acs.chemmater.5c03273
AI-Generated Summary:In this study, a method was developed for selectively synthesizing InSb and InP₁₋ₓSbₓ quantum dots without using metal reductants, by controlling the coordination environment of SbCl₃. This enabled precise regulation of precursor reactivity and alloy formation, and the obtained quantum dots showed excellent emission properties in the SWIR region. This research provides a general principle for the design of colloidal III–V quantum dots.
Naoya Ishida, Keigo Kubota, Toshikatsu Kojima, Toshihiko Mandai, Shin Kiyohara, Yu Kumagai, Tetsu Ichitsubo, Journal of Materials Chemistry A 14, 11057-11064 (2026). "Cathode properties of MgV₂O₄ spinel for magnesium rechargeable batteries: effect of synthesis route on structure and electrochemical performance"
DOI:10.1039/d5ta09602b
AI-Generated Summary:In this study, the crystal structure and properties of MgV₂O₄ cathodes were compared, revealing that disorder induced by mechanical milling, particularly V occupancy at the 16c site, hinders Mg²⁺ transport and lowers reversibility. Conversely, the ordered structure obtained by the solvothermal method achieves high capacity and good reversibility. This research provides guidelines for designing high-performance cathodes for Mg rechargeable batteries.
Yiyi Zheng, Jiapei Li, Tian Zhang, Qiaohui Duan, Shuyu Dong, Zhiqiang Guan, Dewu Lin, Wenjun Zhang, Denis Y.W. Yu, JOURNAL OF COLLOID AND INTERFACE SCIENCE 713, 140177-1-140177-10 (2026). "A weak-solvation strategy for modulating Li ion solvation sheath to enable fast-charging Li-ion batteries"
DOI:10.1016/j.jcis.2026.140177
AI-Generated Summary:In this study, fast-charging performance was greatly improved by combining a graphite anode with a LiFSI–FEMC–MA weakly solvating electrolyte, optimizing Li⁺ desolvation energy and SEI structure. High capacity and stability were demonstrated even at high charging rates, with good compatibility in LiFePO₄ full cells. This research provides new guidelines for electrolyte design for high-power lithium-ion batteries.
Ryuto Eguchi, Ayako Hashimoto, APL Materials 14, 011108-1-011108-9 (2026). "Multiscale structural analysis of defective graphene in transmission electron microscopy images using persistent homology"
DOI:10.1063/5.0305461
AI-Generated Summary:In this study, the persistent homology approach was used to quantitatively analyze TEM images of defective graphene, enabling quantification of local carbon polygon structures and their connectivity. Electron irradiation increased non-hexagonal polygons and distortion, and the number and connectivity of polygons within defect clusters could be evaluated automatically, clarifying the process of defect cluster growth. This research provides a novel analytical guideline for graphene material design.
Arghya Dutta, Takashi Kameda, Taiga Ozawa, Anna Myojin, Minako Nishioka, Wei Yu, Hirotomo Nishihara, Shoichi Matsuda, Advanced Science 13, e19091-1-e19091-10 (2026). "Interconnected Hierarchically Porous Graphene-Based Membrane Electrode for High-Power and Long-Cycle Lithium–Oxygen Battery"
DOI:10.1002/advs.202519091
AI-Generated Summary:In this study, a graphene electrode with highly interconnected macropores was developed to reduce tortuosity, thereby improving oxygen transport and achieving both high energy and power performance in LOBs. Even under lean-electrolyte conditions, high capacity, high rate capability, and long cycle life were demonstrated. This work shows that rational electrode architecture is effective for enhancing LOB performance.
Manai Ono, Misato Takahashi, Ryo Tamura, Shoichi Matsuda, ACS Applied Energy Materials 9, 1405-1411 (2026). "Unveiling Electrolyte Design Principles for Sodium-Ion Batteries Using Combinatorial Electrochemistry and Machine Learning-Assisted Analysis"
DOI:10.1021/acsaem.5c03028
AI-Generated Summary:In this study, the effects of NaFSI concentration, DMC/EMC ratio, and FEC content on SIB performance were evaluated using machine learning with a variety of electrolyte compositions. Particularly, high NaFSI, EMC-rich, and FEC-containing electrolytes showed high reversibility, long cycle life, and formed stable NaF-rich interphases. This research provides useful insights for SIB electrolyte design and demonstrates the utility of machine learning.
Tsukasa Iwama, Ryosuke Sugimoto, Raimu Endo, Tsuyoshi Ohnishi, Masakazu Haruta, Takayuki Doi, Takuya Masuda, Journal of Physical Chemistry Letters 17, 2181-2190 (2026). "Electrochemical Lithiation and Delithiation of Amorphous Non-stoichiometric Silicon Oxide Thin-Film Electrode Studied by Operando X-ray Photoelectron Spectroscopy"
DOI:10.1021/acs.jpclett.5c04065
AI-Generated Summary:In this study, the lithiation/delithiation mechanism of a nonstoichiometric SiOx thin-film electrode was analyzed using operando XPS. It was clarified that initially LiySi and lithium silicates are formed at the interface, then lithiation progresses into the bulk, extending the ionic conductive pathway. The LiySi peak reversibly changes with the charge/discharge state, demonstrating uniform reaction across the thin film. This research contributes to understanding the reaction processes in SiOx-based electrodes.
Naoto Tanibata, Naoki Nonaka, Daisuke Urushihara, Hayami Takeda, Ryo Kobayashi, Naoaki Kuwata, Masanobu Nakayama, Advanced Electronic Materials 12, e00688-1-e00688-9 (2026). "High-Throughput Screening and Characterization of Non-Flammable Na-Cl Solid Electrolytes"
DOI:10.1002/aelm.202500688
AI-Generated Summary:In this study, ionic conductivities of Na-Cl compounds were systematically evaluated via calculations and experiments, revealing that Na₃La₅Cl₁₈ possesses both high thermal stability and high ionic conductivity. The presence of a one-dimensional conduction pathway along the c-axis and a high ignition temperature were also confirmed, providing new guidelines for designing safe and high-performance all-solid-state batteries. This study contributes to enhanced safety and performance of ASSBs.
Masahiko Shimizu, Katsuaki Nakazawa, Hisashi Shima, Hajime Matsumoto, Takahiko Takewaki, Kazutaka Mitsuishi, Ayako Hashimoto , CHEMICAL COMMUNICATIONS 62, 3260-3264 (2026). "Atomic-scale insights into the Cu ion distribution in zeolites used for ammonia selective catalytic reduction during early hydrothermal degradation"
DOI:10.1039/D5CC06274H
AI-Generated Summary:In this study, the initial hydrothermal degradation behaviors of Cu-SSZ-13 and Cu-SSZ-39 zeolites were compared and clarified using electron ptychography and multiscale structural analysis. Cu-SSZ-39 showed higher hydrothermal stability due to its lower Cu occupancy at eight-membered rings. These findings demonstrate that differences in atomic-scale Cu distributions are a key factor in improving hydrothermal durability and provide important guidelines for the design of SCR catalysts.
Arghya Dutta, Takashi Kameda, Junji Takada, Yuuka Nakajima, Takahiro Morishita, Shoichi Matsuda, Advanced Science 13, e14406-1-e14406-14 (2026). "Quantitative Porosity Engineering of Carbon Electrode in Lithium–Oxygen Batteries with Cell-Level Gravimetric Energy Density Over 1500 Wh kg⁻¹"
DOI:10.1002/advs.202514406
AI-Generated Summary:This study, through simulations and experiments, demonstrated that optimization of carbon electrode pore volume and electrolyte amount is essential for achieving high energy density and long life in LOBs. By adjusting electrode mass loading and pore structure, a practical cell-level energy density exceeding 1500 Wh kg⁻¹ and stable cycling characteristics were both achieved. This research provides key guidelines for pore design in LOB positive electrodes.
Hongbo Yuan, Kaori Sugii, Gen Hasegawa, Yu Meng, Yoshitaka Matsushita, Hirofumi Akamatsu, Naoaki Kuwata, Kazunari Yamaura, Yoshihiro Tsujimoto, CHEMISTRY OF MATERIALS 38, 1457-1468 (2026). "Flux Crystal Growth of Ruddlesden-Popper Titanium Oxysulfides LiLnTiO₃S (Ln = La–Gd): Lithium-Ion Mobility in Li₁−xNd(Ti₁−xNbx)O₃S (x = 0–0.25)"
DOI:10.1021/acs.chemmater.5c02924
AI-Generated Summary:In this study, the synthesis and structure of Ruddlesden–Popper-type LiLnTiO₃S single crystals with mixed oxygen and sulfur anions were reported. Substitution of Ti with Nb introduced lithium vacancies and greatly enhanced the ionic conductivity of LiNdTiO₃S, with a notably low activation energy also observed. This research indicates a new direction for the design of solid electrolytes.
Masahiko Shimizu, Katsuaki Nakazawa, Hisashi Shima, Masakazu Koike, Hajime Matsumoto, Takahiko Takewaki, Kazutaka Mitsuishi, Ayako Hashimoto, ChemistrySelect 11, e03562-1-e03562-9 (2026). "Visualizing Hydration-Induced Cu Migration in SSZ-13 Zeolite Through Electron Ptychography"
DOI:10.1002/slct.202503562
AI-Generated Summary:In this study, hydration-induced migration of Cu ions in Cu-SSZ-13 zeolite was directly visualized at the atomic level by electron ptychography. Under catalytic conditions, Cu ions migrated from d6r to eight-membered ring sites, generally agreeing with theoretical predictions while also suggesting the presence of previously unrecognized sites. This research provides valuable insights into the dynamics and local structure of Cu active sites, contributing to improved SCR catalyst performance and the design of new zeolite catalysts.
Sihao Xing, Gen Hasegawa, Prince Sharma, Daisuke Ito, Kazuhiro Kamiguchi, Kazunori Takada, Naoaki Kuwata, ACS Energy Letters 11, 1889-1896 (2026). "Operando Time-of-Flight Secondary Ion Mass Spectrometry Visualization of Reversible and Irreversible Reactions in Oxide-Based Solid-State Batteries"
DOI:10.1021/acsenergylett.5c03610
AI-Generated Summary:In this study, operando TOF-SIMS was used to visualize the electrode reaction distribution in all-solid-state batteries, clarifying reaction inhomogeneity in the NCA positive electrode and uniformity in the LTO negative electrode. It was shown that solid electrolyte infiltration improves reactivity and that ion intensity changes correspond to the state of charge. This research provides guidelines for optimizing electrode structures by elucidating reaction distribution and irreversible capacity in SSBs.
Miao Wang, Wenqin Peng, Andrey Lyalin, Nattamon Suwannaharn, Takuya Tsuji, Daiju Matsumura, Tetsuro Morooka, Tomoaki Kumeda, Tetsuya Taketsugu, Tadakatsu Ohkubo, Takuya Masuda, Taisuke T. Sasaki, Ken Sakaushi, Journal of Physical Chemistry C 130, 931-941 (2026). "Nanointerface Coupling Activates Earth-Abundant Elements for Enhanced Oxygen Evolution Electrode Process"
DOI:10.1021/acs.jpcc.5c06544
AI-Generated Summary:In this study, it was clarified that a slight compositional change in MnFeNi-based OER catalysts can modulate the rate-determining step via stabilization of intermediates, drastically enhancing activity through synergistic interactions between elements. Both experimental and theoretical approaches indicate that compositional tuning governs catalytic reaction kinetics, providing new guidelines for next-generation materials design.
Akihiro Nomura, Kimihiko Ito, SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 27, 2658329-1-2658329-15 (2026). "An air-electrode with hierarchically continuous pore architecture: a step toward “true” lithium–air batteries working with atmospheric oxygen"
DOI:10.1080/14686996.2026.2658329
AI-Generated Summary:In this study, a CNT-with-CP air electrode with hierarchical pores was developed, achieving uniform ORR and high power operation without pore clogging even under atmospheric O₂. The LAB demonstrated 1.6 Ah and an energy density of 740 Wh kg⁻¹, marking an important step toward realizing “true” LABs. This research provides new design guidelines for air electrodes.
Hideyuki Yasufuku, Tsuyoshi Ohnishi, Shigenori Ueda, Yoshiyuki Yamashita, Hiroshi Shinotsuka, Hideki Yoshikawa, Shigeo Tanuma, Satoshi Kawada, Yoshitaka Matsushita, Surface Science Spectra 33, 014001-1-014001-10 (2026). "Hard x-ray photoelectron spectroscopy (HAXPES) Cr Kα and XPS Al Kα measurements of bulk lithium metal"
DOI:10.1116/6.0004962
AI-Generated Summary:In this study, the electronic states of bulk lithium were analyzed by HAXPES and XPS using Cr Kα and Al Kα radiation sources. Li 1s, O 1s, and F 1s spectra were obtained, enabling detailed evaluation of the bulk state. This research provides useful fundamental data for lithium electronic structure analysis.
Kei Nishikawa, Akitoshi Hayashi, Kazunori Takada, Yukiko Matsui, Masashi Ishikawa, Masayoshi Watanabe, Shuji Nakanishi, Kohei Shimokawa, Toshihiko Mandai, Tetsu Ichitsubo, Kiyoshi Kanamura, 韓国セラミックス協会 63, 336-356 (2026). "Research and development of next generation batteries in the ALCA-SPRING project (JST)"
DOI:10.1007/s43207-025-00557-3
AI-Generated Summary:This study introduces the outline and achievements of the ALCA-SPRING next-generation battery project led by JST. The development of new materials and application to cells have accelerated commercialization of sulfide-based all-solid-state batteries, lithium-sulfur batteries, and lithium-metal batteries. On the other hand, many challenges remain for oxide-based all-solid-state batteries and others, confirming the importance of fundamental research. This research provides guidelines for next-generation battery development.
Akihiro Nomura, Shota Azuma, Fumisato Ozawa, Morihiro Saito, ACS Applied Energy Materials 9, 827-841 (2026). "Rational Engineering of Amide-based Electrolytes for “True"-Lithium-Air Batteries Working by Atmospheric Oxygen"
DOI:10.1021/acsaem.5c02972
AI-Generated Summary:In this study, using low-viscosity amide-based electrolytes enabled the realization of high-power, high-energy LABs operating even under atmospheric oxygen. Particularly, the DMF-LiNO₃ electrolyte achieved high discharge power of 2200 W kg⁻¹, while the DMA-based cells showed good cycle stability. Anion mixing suppressed volatilization and side reactions, providing important guidance for the practical use of LABs under air atmosphere.
Hydrogen Technology Materials Field
Atsuki Sakata, Hideki Abe, Takeshi Fujita, Akira Yamaguchi, Shigenori Ueda,Boborahimov Azamat Boborahim Ugli, Masahiro Miyauchi, Shusaku Shoji, Journal of CO2 Utilization 109, 103471-1-103471-8 (2026). "Synthesis of helical carbon nanofiber for greenhouse gas fixation and mechanistic insight into CO driven carbon formation"
DOI:10.1016/j.jcou.2026.103471
AI-Generated Summary:In this study, we developed a method to directly synthesize helical carbon nanofibers from CO under ambient pressure, achieving structural control and high yield using an Fe–Mo catalyst. The products exhibited uniform morphology and high edge-plane density, demonstrating potential for overcoming CO₂ utilization bottlenecks and for advanced material applications.
Takumi Ichikawa, Gen Nishijima, Yuya Hattori, Yoshikazu Mizuguchi, JAPANESE JOURNAL OF APPLIED PHYSICS 65, 100904-1-100904-4 (2026). "Enhancement of a transport critical current by flux trapping in Sn-Pb superconducting solder wire"
DOI:10.35848/1347-4065/ae6ea6
AI-Generated Summary:In this study, we investigated the magnetic-field hysteresis effect on the critical current (Ic) of Sn-Pb solder from the perspective of flux trapping, and found a significant difference in Ic between zero-field-cooled and field-cooled states. Moreover, we showed that phase-separated superconducting alloys exhibit a remarkable enhancement of Ic due to flux trapping, suggesting potential applications in superconducting technologies.
Ya Xu, Keiji Oyoshi, Haruka Yoshikawa, Hiroyuki Takeya, Hiroshi Amekura, Takafumi D. Yamamoto, Yoshitaka Matsushita, Alexei A. Belik, Miyoko Tanaka, Akiko T. Saito, Koji Kamiya, Yoshihiko Takeda, Nature Communications 17, 4952-1-4952-12 (2026). "Enhancing hydrogen permeation barrier performance of ErCo2 magnetic refrigeration 1 material via surface oxide layer formation"
DOI:10.1038/s41467-026-71547-0
AI-Generated Summary:In this study, we improved the hydrogen permeation barrier performance of ErCo₂ particles by forming a CuO layer on the surface through Cu plating and oxidation treatment. As a result, even after hydrogen exposure, the CuO-coated samples maintained a large magnetocaloric effect, demonstrating both experimentally and theoretically that CuO is a promising barrier material for magnetic refrigeration.
Yingying Cheng, Masaki Takeguchi, Abraham Castro Garcia, Ken Sakaushi, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 65, e2469199-1-e2469199-11 (2026). "Accelerated Discovery-to-Unveiling of High-Performance and Affordable Ammonia Electrode Process by Human-Machine Collaboration Framework"
DOI:10.1002/anie.2469199
AI-Generated Summary:In this study, we rapidly discovered the FeCoNiCuGa electrocatalyst using reaction descriptors through human–machine collaboration. This catalyst shows high ammonia production performance, and we clarified that *NO₂⁻ adsorption determines reaction efficiency. These results demonstrate the usefulness of our approach for the accelerated discovery and mechanistic elucidation of novel electrochemical reactions.
Noriki Terada, Simon R. Larsen, Takafumi D. Yamamoto, Daisuke Okuyama, Hironori Nakao, Ginga Kitahara, Shuki Torii, Hiraku Saito, Taro Nakajima, PHYSICAL REVIEW B 113, 224436-1-224436-12 (2026). "Interplay among spin, orbital and lattice degrees of freedom in magnetocaloric compound HoB2"
DOI:10.1103/s3xn-xknz
AI-Generated Summary:In this study, we investigated the magnetic ordering and structural transitions of HoB₂ using neutron and X-ray diffraction and AC susceptibility, discovering a phase transition from hexagonal to monoclinic and a change in spin orientation at 11 K. Furthermore, we observed large spin fluctuations in the intermediate-temperature region, and proposed that the low-temperature phase transition is caused by the rearrangement of the 4f orbital state.
Kuan-Lun Chen, Jing-Yan Wu, Yu-Ting Tai, Yu-Cheng Kuo, Chun-Kai Yeh, Ken Sakaushi, Hong-Kang Tian, PHYSICAL CHEMISTRY CHEMICAL PHYSICS 28, 15450-15458 (2026). "Local magnetic moment and adsorption energetics as intrinsic activity indicators for bimetallic 2D π-d conjugated BHT frameworks in oxygen evolution electrocatalysis"
DOI:10.1039/d6cp01812b
AI-Generated Summary:In this study, using local magnetic moment and *OH adsorption energy as indicators of electrocatalytic activity in π-d conjugated BHT, we theoretically showed that MnFe₅:₁–BHT possesses all the desired properties: moderate *OH binding, high-spin state, metastability, and conductivity. Experimental synthesis is considered promising.
Nitin Srivastava, Bhargav R. Sudhalkar, Soupitak Pal, Alok Singh, Nobuya Banno, Sangeeta Santra , MATERIALS & DESIGN 268, 116577-1-116577-23 (2026). "Oxide-dispersion driven phase and microstructural evolution with an analytical framework for critical current density in synergistically yttria-titania doped Nb3Sn"
DOI:10.1016/j.matdes.2026.116577
AI-Generated Summary:In this study, we investigated the effects of Y₂O₃ and TiO₂ co-doping on the phase, microstructure, and properties of Nb₃Sn. As a result, the synergic effect of the dopants at grain boundaries suppressed NbO formation, producing superior J₍c₎ performance and a higher T₍c₎, and we also proposed a model to predict J₍c₎.
Tsuyoshi Shirai, Mohamed G. Gado, Takashi Hirayama, Kyohei Natsume, Koji Kamiya, Masayoshi Ishida, CRYOGENICS 161, 104405-1-104405-14 (2026). "Mechanical work and efficiency evaluation of a tandem active magnetic regenerator for hydrogen liquefaction"
DOI:10.1016/j.cryogenics.2026.104405
AI-Generated Summary:In this study, we evaluated the magnetic-force cancellation effect in tandem-type AMRs using HoAl₂ and demonstrated both numerically and experimentally that this design greatly improves mechanical input work and system efficiency compared to the single-bed type. The tandem-type is considered an efficient and simple technology for high-field magnetic refrigeration.
Taichi Terashima, Hiroyuki Takeya, Hisatomo Harima, PHYSICAL REVIEW LETTERS 137, 056003-1-056003-7 (2026). "Fermi-Surface-Sheet Dependent Electron-Phonon Coupling in a Borocarbide Superconductor YNi2B2C"
DOI:10.1103/m6r6-vpdg
AI-Generated Summary:In this study, through dHvA oscillation measurements and band-structure calculations on YNi₂B₂C, we clarified the origin of previously unexplained large dHvA frequencies and the Fermi-surface dependence of electron-phonon coupling strength for each orbit. Particularly, we quantitatively revealed the spatial inhomogeneity of the electron-phonon coupling.
Yusuke Kawagishi, Taiki Wada, Akiyoshi Matsumoto, Ryo Teranishi, JAPANESE JOURNAL OF APPLIED PHYSICS 65, 155501-1-155501-5 (2026). "Observation of microstructural defects on delaminated surfaces of REBCO coated conductors and mechanistic analysis of delamination"
DOI:10.35848/1347-4065/ae8a99
AI-Generated Summary:In this study, we observed the delaminated surfaces of REBCO coated conductors and clarified that cracks in the YBCO layer and interfacial voids are the main causes of delamination. This demonstrates that both intralayer defects and interfacial weaknesses contribute to delamination, providing guidelines for improving mechanical reliability.
Nobuya Banno, SUPERCONDUCTOR SCIENCE & TECHNOLOGY 39, 083002-1-083002-27 (2026). "Role of elemental additions in NbN3Sn phase formation in wires"
DOI:10.1088/1361-6668/ae922b
AI-Generated Summary:In this study, we focus on phase formation and microstructural control of Nb₃Sn conductors from the perspectives of thermodynamics, diffusion kinetics, and elemental additions. We systematically explain the roles and effects of Cu, Ti, Zn additions, and strengthening of the Sn core for optimal processing. This deepens the understanding of layer formation via elemental addition strategies.
Wenqin Peng, Shigenobu Hayashi, Abraham Castro Garcia, Lei Fang, Masaki Takeguchi, Yibin Xu, Ken Sakaushi, SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 27, 2713992-1-2713992-12 (2026). "Interpretable data-driven discovery of high-performance multielement metal oxide electrocatalysts for oxygen evolution reaction from a small hybrid dataset"
DOI:10.1080/14686996.2026.2713992
AI-Generated Summary:In this study, using an interpretable data-driven method trained on only 557 hybrid data points, we discovered OER electrocatalysts across a wide candidate space, including elemental combinations not in the training data. As a result, a quinary oxide of V, Ni, W, Rh, and Ru showed 20 times the performance of IrO₂.
Taku T. Suzuki, Isao Sakaguchi, Soshi Iimura, Tomoaki Nishimura, Bun Tsuchiya, SURFACE SCIENCE 769, 122967-1-122967-10 (2026). "Combined energy and TOF analyses of low-energy elastic recoil detection for analyzing the topmost surface of atomic deuterium-irradiated rutile TiO₂(001) crystals"
DOI:10.1016/j.susc.2026.122967
AI-Generated Summary:This study demonstrated that issues in surface hydrogen analysis by low-energy ERDA can be overcome by simultaneously using TOF and energy analysis. TOF+EA enabled the rapid and sensitive detection of deuterium on TiO₂(001) surfaces and clarified the incorporation into specific occupancy sites and the existence of Ti and D interstitials. This work contributes to the advancement of surface hydrogen isotope analysis methods.
Tomoyuki Yamasaki, Keiga Fukui, Soshi Iimura, Shunsuke Tsuda, Hiroshi Mizoguchi, Takahisa Omata, Hideo Hosono, Journal of the American Chemical Society 148, 11393-11402 (2026). "Amphoteric Behavior of Hydrogen in Lanthanum Oxyhydrides: Correlation with Electrochemical Properties"
DOI:10.1021/jacs.6c01849
AI-Generated Summary:In this study, the electrochemical window and amphoteric properties of the hydride conductor LaH₃–₂ₓOₓ were systematically analyzed on an electronic energy scale. Electromotive force measurements using a hydrogen concentration cell revealed the presence of both H⁻ and H⁺ conduction, contributing to a unified understanding of hydrogen ion conductors. This research provides design guidelines for utilizing the amphoteric nature of hydrogen.
Yukihiro Yasuda, Osamu Oki, Shohei Shimozato, Kazuho Goto, Natsumi Noguchi, Shin-ichi Ito, Miwa Hikichi, Ryuki Tsuji, Yuki Nakahira, Reina Utsumi, Hiroyuki Saitoh, Satoshi Nakano, Shunsuke Naka, Ikutaro Hamada, Shin-ichi Orimo,Takahiro Kondo, ACS Nano 20, 9951-9960 (2026). "Interlayer Hydrogen–Hydrogen Spacing Regulates the Formation of Molecular Hydrogen in Hydrogen Boride Nanosheets"
DOI:10.1021/acsnano.5c20691
AI-Generated Summary:In this study, the multimodal hydrogen desorption mechanism of hydrogen boride nanosheets was clarified. It was shown through theoretical calculations and experiments that, in the low-temperature range, the distribution of interlayer H···H distances governs H₂ desorption behavior, and that selective hydrogen depletion occurs while the bonding configuration remains unchanged. This research provides valuable insights into the design of two-dimensional hydrogen carrier materials.
Mohamed G. Gado, Tsuyoshi Shirai, Yusuke Yoshida, Akira Uchida, Takashi Hirayama, Takenori Numazawa, Kyohei Natsume, Koji Kamiya, CRYOGENICS 158, 104347-1-104347-13 (2026). "Experimental assessment and comparative analysis of active magnetic regenerative refrigeration for hydrogen liquefaction using HoAl₂ and ErAl₂"
DOI:10.1016/j.cryogenics.2026.104347
AI-Generated Summary:In this study, an AMR refrigeration system using HoAl₂ was developed and experimentally evaluated, demonstrating high-efficiency hydrogen liquefaction performance at 2 T and around 22–29 K. At 5 T, a cooling capacity of 55 W, COP of 1.0, and 3.99 kg hydrogen liquefaction per kg HoAl₂ could be achieved. ErAl₂ is more suitable for lower temperature ranges and is promising for next-generation technologies such as slush hydrogen production.
Takashi Hirayama, Yutaro Koike, CRYOGENICS 156, 104296-1-104296-5 (2026). "Experimental observation of friction factor variation in regenerators at cryogenic temperatures"
DOI:10.1016/j.cryogenics.2026.104296
AI-Generated Summary:In this study, a new system was developed to measure the friction factor of regenerators in regenerative cryocoolers at cryogenic temperatures, and experiments were conducted using zinc spheres. The friction factor at cryogenic temperatures differed from that at room temperature, which is considered to be due to changes in porosity. This study provides fundamental verification for applying room-temperature friction factor correlations to cryogenic regenerators.
Hiroshi Mizoguchi, Yuichi Shirako, Shusaku Shoji, Hideki Abe, Takeshi Fujita, Hideo Hosono, Journal of Physical Chemistry Letters 17, 3701-3705 (2026). "Exploring Ortho–Para Hydrogen Conversion Catalysts Based on Surface Electric Field Gradient"
DOI:10.1021/acs.jpclett.6c00357
AI-Generated Summary:In this study, based on the hypothesis that an inhomogeneous electric field on the surface of highly ionic oxides promotes ortho-to-para hydrogen conversion, new conversion catalysts were explored using lattice energy as an indicator. Highly efficient conversion was achieved by combining oxides such as SiO₂ with 3d transition metal cocatalysts, exhibiting superior activity compared to conventional catalysts. This study provides important insights for catalyst design.
Akiyoshi Matsumoto, Shuuichi Ooi, Satoshi Hata, Taiki Wada, Ryo Teranishi, Yuji Tsuchiya, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 36, 6602004-1-6602004-4 (2026). "Microstructure and superconducting properties of Yttrium barium copper oxide thin film with patterned substrates for ultra-fine multi-filaments"
DOI:10.1109/TASC.2026.3655686
AI-Generated Summary:In this study, to realize multifilamentary YBCO superconducting thin film conductors, stripe structures were patterned on substrates and evaluated using various materials. Non-superconducting stripes separated the superconducting regions, and TEM analysis confirmed differences in crystal orientation and impurity phase formation. This study provides design guidelines contributing to reduced AC losses through multifilamentation and the advancement of superconductor applications.
Akiyoshi Matsumoto, Akimitsu Ishii, Rei Kawasaki, Takahiro Hosokawa, Akiyasu Yamamoto, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 36, 6200304-1-6200304-4 (2026). "Development of Premix Internal-Magnesium-Diffusion MgB₂ Wire Using a Data-Driven Approach"
DOI:10.1109/TASC.2026.3652546
AI-Generated Summary:In this study, Bayesian optimization was applied to optimize the fabrication conditions for MgB₂ superconducting wires, efficiently searching for heat-treatment conditions that maximize the engineering critical current density (Je). In addition to conventional conditions, new optimal conditions were identified through process informatics, resulting in reduced experimental iterations and improved wire performance. This research demonstrates a useful method for streamlining and accelerating superconducting wire development.
Mohamed Abdul Basith Mydeen Pitchai, Shigeki Nimori, Nobuya Banno, Journal of Alloys and Compounds 1050, 185509-1-185509-10 (2026). "Zn-alloying-driven modulation of diffusion kinetics and flux pinning in Cu-matrix Nb₃Sn superconductors"
DOI:10.1016/j.jallcom.2025.185509
AI-Generated Summary:This study demonstrated that Zn alloying in internally-tinned Nb₃Sn superconducting wires is effective in promoting phase formation and enhancing flux pinning characteristics. Specifically, the highest pinning force and upper critical field were achieved at around 15 wt% Zn addition, and a combined pinning mechanism arising from grain boundary composition control was clarified. This research proposes a new method for the design of high-performance Nb₃Sn wires.
T. Wada, H. Fujimoto, Y. Kawahara, A. Matsumoto, S. Ooi, M. Tachiki, R. Teranishi, Materials Today Communications 50, 114552-1-114552-9 (2026). "Cross-sectional microstructure observation of YBa₂Cu₃O₇-δ multifilament films fabricated on Nb stripes"
DOI:10.1016/j.mtcomm.2025.114552
AI-Generated Summary:In this study, a bottom-up approach was used to achieve multifilamentation by forming YBCO thin films on Nb stripes, aiming to reduce AC losses. Microstructural analysis confirmed the formation of Y–Cu–O and Cu–O particles, voids, and Ba₅Nb₄O₁₅ on the Nb stripes. This research provides useful insights for the design of multifilamented YBCO thin films and measures to reduce AC losses.
Miao Wang, Wenqin Peng, Andrey Lyalin, Nattamon Suwannaharn, Takuya Tsuji, Daiju Matsumura, Tetsuro Morooka, Tomoaki Kumeda, Tetsuya Taketsugu, Tadakatsu Ohkubo, Takuya Masuda, Taisuke T. Sasaki, Ken Sakaushi, Journal of Physical Chemistry C 130, 931-941 (2026). "Nanointerface Coupling Activates Earth-Abundant Elements for Enhanced Oxygen Evolution Electrode Process"
DOI:10.1021/acs.jpcc.5c06544
AI-Generated Summary:This study clarified that the enhanced OER activity in multicomponent MnFeNi materials is due to synergistic interactions among the constituent elements, achieved by tuning intermediate binding through minor compositional adjustments to shift the rate-determining step. This work provides understanding of how compositional control affects complex electrocatalytic kinetics and offers new guidelines for material design.
Hiroki Fujii, CRYOGENICS 154, 104259-1-104259-11 (2026). "Low-temperature sintering of ex situ processed MgB₂ tapes under various hydrogen partial pressures"
DOI:10.1016/j.cryogenics.2025.104259
AI-Generated Summary:In this study, MgB₂/Fe tapes were sintered under controlled hydrogen partial pressures, and pure H₂ atmosphere enabled a reduction of sintering temperature as well as improvements in Jc and Tc. High Jc was obtained at 530℃, making it possible to fabricate lightweight Al-sheathed conductors. The effect of Sn addition depends on the atmosphere and does not enhance Jc under pure H₂. This study contributes to improving the performance and expanding applications of MgB₂ conductors.
Yasuaki Takeda, Tomoko Eguchi, Ariane Keiko Albessard, Gen Nishijima, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 36, 8800205-1-8800205-5 (2026). "Evaluation of Microstructure, Resistance, and Critical Current of REBCO Superconducting Joints Fabricated by Slurry Process"
DOI:10.1109/TASC.2025.3649135
AI-Generated Summary:In this study, the characteristics of REBCO superconducting tape joints fabricated by the slurry process were evaluated. The joining layer adhered well to the REBCO layer, and extremely low joint resistance allowed persistent current at 4 K and 77 K. In contrast, weak links in the joining layer caused decreased critical current and hysteresis in an applied magnetic field. This study clarified the fundamental properties of slurry-processed joints.
