Battery and Cell Materials Field
Koichi Hashimoto, Kei Kubota, Ryoichi Tatara, Tomooki Hosaka, Shinichi Komaba*, INORGANIC CHEMISTRY 63, 23317-23327 (2024). "Na5/6[Ni1/3Mn1/6Fe1/6Ti1/3]O2 as an Optimized O3-Type Layered Oxide Positive Electrode Material for Sodium-Ion Batteries"
DOI:10.1021/acs.inorgchem.4c04001
AI-Generated Summary: This study introduces Na₅/₆[Ni₁/₃Mn₁/₆Fe₁/₆Ti₁/₃]O₂ as an optimized O3-type layered oxide cathode for sodium-ion batteries. By adjusting the ratios of Fe³⁺ and Ti⁴⁺, the researchers achieved a balance between capacity, voltage, and cycling stability. Fe substitution increased Na⁺ content and capacity but reduced stability due to migration. Ti improved voltage and stability, though excess Ti caused degradation. The final composition showed excellent performance over 250 cycles, highlighting its promise for durable sodium-ion battery applications.
Randy Jalem*, Kazunori Takada, Hitoshi Onodera, Shuhei Yoshida, Journal of Materials Chemistry A 12, 33099-33113 (2024). "Crystal structure, stability and Li superionic conductivity of pyrochlore-type solid electrolyte Li2−xLa(1+x)/3Nb2O6F: a first-principles calculation study"
DOI:10.1039/d4ta04827j
AI-Generated Summary: This computational study examines the pyrochlore-type solid electrolyte Li₂₋ₓLa(1+ₓ)/3Nb₂O₆F using density functional theory and molecular dynamics. The material exhibits superionic conductivity of 3.9 × 10⁻³ S/cm at room temperature. Lithium ions migrate through hexagonal tunnels formed by NbO₆ units, with fluorine contributing to low phonon energy and enhanced mobility. The findings support LLNOF as a promising candidate for high-performance all-solid-state lithium-ion batteries.
Palivela Siva Gangadhar, Silve Dasgupta, Prakriti R. Bangal*, Towhid H. Chowdhury, Ashraful Islam*, Lingamallu Giribabu*, ACS Applied Energy Materials 7, 3309-3320 (2024). "Influence of the Selenophene Auxiliary Acceptor in Porphyrin Sensitizers for High-Performance Dye-Sensitized Solar Cells"
DOI:10.1021/acsaem.4c00062
AI-Generated Summary: This study investigates the role of selenophene auxiliary acceptors in porphyrin sensitizers for dye-sensitized solar cells. Compared to thiophene analogs, selenophene enhances light absorption and electron injection, resulting in higher current density and efficiency. Molecular orbital analysis confirms improved charge separation and alignment. These results demonstrate the potential of selenophene-modified porphyrins for high-performance solar energy conversion.
Md. Emrul Kayesh, Md. Abdul Karim, Yulu He, Yasuhiro Shirai, Masatoshi Yanagida, Ashraful Islam, Small 20, 2402896-1-2402896-8 (2024). "Minimization of Energy Level Mismatch of PCBM and Surface Passivation for Highly Stable Sn-Based Perovskite Solar Cells by Doping n-Type Polymer"
DOI:10.1002/smll.202402896
AI-Generated Summary: This study investigates the enhancement of Sn-based perovskite solar cells through the doping of PCBM with the n-type polymer N2200. The incorporation of N2200 facilitates improved band alignment and effective passivation of surface defects, thereby reducing the conduction band offset and enabling efficient charge transport. Consequently, the modified devices achieve a certified power conversion efficiency of 11.95% and retain over 90% of their initial performance under continuous illumination for 1000 hours. These results indicate a viable strategy for improving the operational stability and efficiency of lead-free perovskite solar cells.
Shoichi Matsuda, Shin Kimura, Misato Takahashi, Batteries & Supercaps 7, e202400509-1-e202400509-8 (2024). "Automated Robotic Cell Fabrication Technology for Stacked-Type Lithium-Oxygen Batteries"
DOI:10.1002/batt.202400509
AI-Generated Summary: This research outlines the development of an automated robotic system for the fabrication of stacked-type lithium-oxygen battery cells. The system is capable of producing over 80 cells per day with high precision in electrode stacking and electrolyte injection, thereby enhancing performance and reproducibility. Furthermore, the study examines multi-component electrolytes to optimize energy density. The proposed approach constitutes a scalable and effective solution to current manufacturing limitations and contributes to the advancement of lithium-oxygen battery technologies.
Hiroaki Kaneko, Yohei Cho, Tomotaka Sugimura, Ayako Hashimoto, Akira Yamaguchi, Masahiro Miyauchi, CHEMICAL COMMUNICATIONS 60, 10406-10409 (2024). "Sustaining syngas production at a near-unity H2/CO ratio in the photo-induced dry reforming of methane independent of the reactant gas composition"
DOI:10.1039/d4cc03088e
AI-Generated Summary: This study presents a photocatalytic approach for the dry reforming of methane that consistently yields syngas with a near-unity H₂/CO ratio. The method employs a tailored catalyst system that ensures stable performance irrespective of the reactant gas composition. The findings provide a robust and efficient pathway for sustainable syngas generation and contribute to the development of advanced chemical energy conversion technologies.
Yasuhiro Domi*, Hiroyuki Usui, Takumi Okasaka, Kei Nishikawa, Hiroki Sakaguchi*, JOURNAL OF THE ELECTROCHEMICAL SOCIETY 171, 080506-1-080506-12 (2024). "Silicon-Based Nanocomposite Anodes with Excellent Cycle Life for Lithium-Ion Batteries Achieved by the Synergistic Effect of Two Silicides"
DOI:10.1149/1945-7111/ad69c6
AI-Generated Summary: This study presents silicon-based nanocomposite anodes for lithium-ion batteries, utilizing the synergistic effect of two silicides to enhance cycle life. The dual-silicide system improves structural stability and mitigates volume expansion during cycling. Electrochemical tests reveal stable capacity retention and reduced impedance growth. The integration of multiple silicides facilitates efficient lithium-ion diffusion and mechanical resilience. These results demonstrate a promising strategy for developing durable anodes suitable for long-term energy storage applications.
Vishnuvardhan Reddy Chappidi, Sudhanshu Kumar Nayak, Md. Emrul Kayesh, Md. Abdul Karim, Yulu He, Ashraful Islam*, Sai Santosh Kumar Raavi*, Solar Energy 281, 112888-1-112888-9 (2024). "Elucidating the improved properties of defect engineered lanthanum-doped nickel oxide as hole-transport layer in triple-cation perovskite solar cells"
DOI:10.1016/j.solener.2024.112888
AI-Generated Summary: This research investigates lanthanum-doped nickel oxide (La-NiO) as a hole-transport layer in triple-cation perovskite solar cells. Defect engineering and lanthanum incorporation enhance conductivity and reduce trap states. Improved energy level alignment and suppressed recombination contribute to higher efficiency. The modified La-NiO layer also exhibits better film uniformity and stability. These findings suggest La-NiO is a viable material for efficient and reliable perovskite solar cell applications.
Dhruba B. Khadka*, Yasuhiro Shirai, Masatoshi Yanagida, Kenjiro Miyano, Conference Record of the IEEE Photovoltaic Specialists Conference 1, 0002-0004 (2024). "Effect of Charge-Modulated Molecular Passivator on Methylammonium/Bromine-Free Inverted Perovskite Solar Cells"
DOI:10.1109/PVSC57443.2024.10749333
AI-Generated Summary: This study examines the effect of a charge-modulated molecular passivator on methylammonium/bromine-free inverted perovskite solar cells. The passivator enhances surface defect passivation and improves charge transport. Device performance shows increased efficiency and reduced hysteresis. The molecular design also contributes to better interface stability under illumination. These results highlight the potential of molecular engineering in optimizing lead-free perovskite solar cells for stable and efficient operation.
Md. Abdul Karim, Vishnuvardhan Reddy Chappidi, Md. Emrul Kayesh, Sai Santosh Kumar Raavi, Ashraful Islam*, Solar Energy 278, 112761-1-112761-7 (2024). "Crosslinker additive integration: A strategy to boost performance and stability in FASnI3 perovskite solar cells"
DOI:10.1016/j.solener.2024.112761
AI-Generated Summary: This study explores the integration of crosslinker additives into FASnI3 perovskite solar cells to enhance both performance and stability. The crosslinkers improve film morphology and reduce defect density, leading to better charge transport and reduced recombination. Enhanced moisture resistance and thermal stability are also observed, contributing to prolonged device lifespan. The findings demonstrate that additive engineering is an effective strategy for optimizing tin-based perovskite solar cells, offering a pathway toward lead-free and stable photovoltaic technologies.
Shamim Ahmmed, Yulu He, Md. Emrul Kayesh, Md. Abdul Karim, Kiyoto Matsuishi*, Ashraful Islam*, ACS Applied Materials & Interfaces 16, 32282-32290 (2024). "Ce-Doped SnO2 Electron Transport Layer for Minimizing Open Circuit Voltage Loss in Lead Perovskite Solar Cells"
DOI:10.1021/acsami.4c05180
AI-Generated Summary: This research investigates the use of cerium-doped SnO2 as an electron transport layer to minimize open-circuit voltage loss in lead-based perovskite solar cells. Ce doping enhances conductivity and reduces interfacial defects, resulting in improved charge extraction and suppressed recombination. The modified layer also contributes to better energy level alignment and device stability. These results indicate that Ce-doped SnO2 is a promising material for achieving high-efficiency and low-loss perovskite solar cells.
Jun Nakanishi*, Takeshi Ueki, Sae Dieb, Hidenori Noguchi, Shota Yamamoto, Keitaro Sodeyama*, SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 25, 2418287-1-2418287-11 (2024). "Data-driven optimization of the in silico design of ionic liquids as interfacial cell culture fluids"
DOI:10.1080/14686996.2024.2418287
AI-Generated Summary: This study applies data-driven methods to optimize the in silico design of ionic liquids for use as interfacial cell culture fluids. By integrating machine learning with molecular simulations, the researchers identify key structural features that influence fluid behavior and cell compatibility. The approach enables rapid screening of candidate compounds and prediction of interfacial properties. The findings support the development of tailored ionic liquids for biomedical applications, offering a rational framework for designing functional materials in cell culture environments.
Mikio Ito, Hidenori Noguchi*, Kohei Uosaki*, JOURNAL OF CHEMICAL PHYSICS 161, 204703-1-204703-8 (2024). "Effect of Para Substituents on NC Bonding of Aryl Isocyanide Molecules Adsorbed on Metal Surfaces Studied by Sum Frequency Generation (SFG) Spectroscopy"
DOI:10.1063/5.0236548
AI-Generated Summary: This study explores how para-substituents affect NC bonding in aryl isocyanide molecules adsorbed on metal surfaces, using sum frequency generation spectroscopy. Electron-withdrawing groups lower the NC stretching frequency, while electron-donating groups raise it, though excessive donation reverses the trend. The bonding nature also varies with the metal substrate, reflecting differences in d-band energy and the balance of σ-donation and π-back-donation. These findings offer insights into surface chemistry and molecular adsorption behavior.
Gen Hasegawa*, Youngseok Kim, Yoshinori Tanaka, Naoaki Kuwata*, Kunimitsu Kataoka, Takahisa Ohno, Junji Akimoto*, Kazunori Takada, ACS Applied Energy Materials 7, 10897-10905 (2024). "Improvement of lithium-ion conductivity by Hf substitution in lithium tantalum phosphate (LiTa2PO8) solid electrolyte"
DOI:10.1021/acsaem.4c01773
AI-Generated Summary: This research investigates the effect of hafnium substitution on lithium-ion conductivity in LiTa2PO8 solid electrolytes. Hf incorporation modifies the crystal structure, enabling wider lithium diffusion pathways and lowering activation energy. The optimized composition shows enhanced ionic conductivity at room temperature. These results suggest that Hf substitution is a promising strategy for improving solid electrolytes in next-generation lithium-ion batteries.
Emily C. Hayward*, Glen J. Smales, Brian R. Pauw, Masaki Takeguchi, Alexander Kulak, Robert D. Huntere, Zoe Schnepp, RSC Sustainability 2, 3490-3499 (2024). "The effect of catalyst precursors on the mechanism of iron-catalysed graphitization of cellulose"
DOI:10.1039/D4SU00365A
AI-Generated Summary: This study examines how different iron catalyst precursors influence cellulose graphitization. Iron(III) nitrate and chloride lead to distinct decomposition pathways and carbon structures. The choice of precursor affects texture and composition of the resulting material. These findings underscore the importance of precursor selection in designing sustainable graphitic carbons from biomass for energy and environmental applications.
Rui Sun, Man Wang, Tianjiao Zeng, Huajian Chen, Toru Yoshitomi, Masaki Takeguchi, Naoki Kawazoe, Yingnan Yang, Guoping Chen*, Bioactive Materials 44, 205-219 (2024). "Scaffolds functionalized with matrix metalloproteinase-responsive release of miRNA for synergistic magnetic hyperthermia and sensitizing chemotherapy of drug-tolerant breast cancer"
DOI:10.1016/j.bioactmat.2024.10.011
AI-Generated Summary: This study introduces a scaffold system designed to treat drug-tolerant breast cancer through combined magnetic hyperthermia and chemotherapy. The scaffold releases microRNA in response to matrix metalloproteinase activity, targeting the tumor microenvironment. Magnetic nanoparticles enable localized heating, enhancing drug sensitivity. The dual approach suppresses tumor growth by modulating gene expression and improving drug uptake. This strategy offers a promising route for overcoming resistance in aggressive breast cancers.
Tetsuro Morooka, Tamao Shishido, Ruttala Devivaraprasad, Ganesan Elumalai, Makoto Aoki, Tetsuroh Shirasawa, Takuya Nakanishi, Atsushi Ishikawa, Toshihiro Kondo, Takuya Masuda*, Journal of Physical Chemistry C 128, 16426-16436 (2024). "Potential-Dependent and Face Orientation-Dependent Electrochemical Oxidative Desorption Behavior of Sulfur Species Adsorbed on Platinum Single-Crystal Surfaces"
DOI:10.1021/acs.jpcc.4c03227
AI-Generated Summary: This research examines how platinum surface orientation and applied potential affect sulfur desorption. Using Pt(111), Pt(100), and Pt(110) electrodes, the study shows that Pt(111) enables desorption at the lowest potential, aiding recovery from sulfur poisoning. Electrochemical and XPS analyses confirm surface activity restoration, while DFT calculations highlight SO2 formation as a key step. These findings help improve catalyst durability in fuel cell applications.
Go Kamesui, Kei Nishikawa, Mikito Ueda, Hisayoshi Matsushima*, JOURNAL OF THE ELECTROCHEMICAL SOCIETY 171, 100507-1-100507-7 (2024). "Correlation between Electrolyte Concentration and Lithium Morphology during Lithium Bis(fluorosulfonyl)amide–Tetraglyme Electrolyte Deposition–Dissolution Reactions"
DOI:10.1149/1945-7111/ad803d
AI-Generated Summary: This study investigates how electrolyte concentration influences lithium morphology during deposition–dissolution in Li bis(fluorosulfonyl)amide–tetraglyme systems. Low solute–solvent ratios lead to thicker fibrous lithium layers, while high ratios suppress growth. Laser interference microscopy reveals dynamic changes near the electrode. The authors propose three growth models based on molar ratio, offering insights for optimizing lithium structures in battery applications.
Ryo Tamura*, Ryuichi Inaba, Mami Watanabe, Yutaro Mori, Makoto Urushihara, Kenji Yamaguchi*, Shoichi Matsuda*, Science and Technology of Advanced Materials: Methods 4, 2416889-1-2416889-8 (2024). "Predicting the surface roughness of an electrodeposited copper film using a machine learning technique"
DOI:10.1080/27660400.2024.2416889
AI-Generated Summary: This study applies machine learning to predict the surface roughness of electrodeposited copper films. Using experimental data and regression models, the authors identify key deposition parameters influencing roughness. The model achieves high accuracy and reveals nonlinear relationships between variables. This approach enables efficient optimization of deposition conditions, reducing trial-and-error in manufacturing. The findings demonstrate the potential of data-driven techniques in materials design and surface engineering.
Yushen Wang, Hidenori Noguchi*, PHYSICAL CHEMISTRY CHEMICAL PHYSICS 26, 25352-25362 (2024). "Revealing the Enhancement of Li Plating/Stripping Efficiency in the TEGDME-based Low-concentration Electrolytes for Anode-free Lithium Metal Batteries"
DOI:10.1039/D4CP02755H
AI-Generated Summary: This study investigates lithium plating/stripping efficiency in anode-free lithium metal batteries using low-concentration TEGDME-based electrolytes. The formation of Li2O-based SEI layers improves stability, while LiNO3 additives prevent oxidation into Li2O2. At higher concentrations, LiF becomes the dominant SEI species, further enhancing Coulombic efficiency. These findings offer insights into electrolyte design for high-performance lithium batteries.
K. Mitsuishi*, T. Ohnishi, K. Niitsu, T. Masuda, S. Miyoshi, K. Takada, SOLID STATE IONICS 417, 116717-1-116717-6 (2024). "Lowering the sintering temperature of LiCoO2 using LiOH aqueous solution"
DOI:10.1016/j.ssi.2024.116717
AI-Generated Summary: This research explores a method to reduce the sintering temperature of LiCoO2 by using LiOH aqueous solution. The approach promotes early phase formation and densification at lower temperatures, preserving material integrity. Structural analysis confirms improved crystallinity and electrochemical performance. This technique offers a cost-effective route for fabricating cathode materials in lithium-ion batteries with reduced thermal processing requirements.
Seong-Hoon Jang*, Randy Jalem, Yoshitaka Tateyama, Journal of Materials Chemistry A 12, 20879-20886 (2024). "Computational discovery of stable Na-ion sulfide solid electrolytes with high conductivity at room temperature"
DOI:10.1039/D4TA02522A
AI-Generated Summary: This study uses a multi-stage DFT-MD sampling workflow to identify stable Na-ion sulfide solid electrolytes with high room-temperature conductivity. By exploring combinations of trivalent and pentavalent metal ions and parent structures, the authors discover several compounds with σNa,300K ≥ 10−3 S cm−1 and favorable phase stability. These materials, such as Na4Ga0.5P0.5S4 and Na3.5Si0.5Ta0.5S4, are promising candidates for experimental synthesis and future solid-state battery applications.
Kiho Nishioka, Mizuki Tanaka, Terumi Goto, Ronja Haas, Anja Henss, Shota Azuma, Morihiro Saito, Shoichi Matsuda, Wei Yu, Hirotomo Nishihara, Hayato Fujimoto, Mamoru Tobisu, Yoshiharu Mukouyama, Shuji Nakanishi*, ACS Applied Materials & Interfaces 16, 46259-46269 (2024). "Fluorinated Amide-Based Electrolytes Induce a Sustained Low-Charging Voltage Plateau under Conditions Verifying the Feasibility of Achieving 500 Wh kg–1 Class Li–O2 Batteries"
DOI:10.1021/acsami.4c08067
AI-Generated Summary: This study demonstrates that fluorinated amide-based electrolytes enable a sustained low-voltage plateau during charging in Li–O2 batteries. The unique solvent properties promote the formation of easily decomposable discharge products, verified by synchrotron X-ray diffraction. This behavior supports the feasibility of achieving 500 Wh kg–1 energy density without additional additives. The findings highlight a promising electrolyte design for next-generation high-energy lithium–oxygen batteries.
Qianli Si, Shoichi Matsuda, Youhei Yamaji, Toshiyuki Momma, Yoshitaka Tateyama*, Advanced Science 11, 2402608-2402608 (2024). "Data-Driven Cycle Life Prediction of Lithium Metal-Based Rechargeable Battery Based on Discharge/Charge Capacity and Relaxation Features"
DOI:10.1002/advs.202402608
AI-Generated Summary: This study develops a machine learning model to predict the cycle life of lithium metal-based rechargeable batteries using discharge, charge, and relaxation features. The model achieves high accuracy (R2 = 0.89) and low test error (6.6%) without relying on specific degradation mechanisms. Feature importance analysis reveals key indicators of capacity fade. The approach offers a practical tool for battery management and design optimization in high-energy systems.
Yimeng Wu, Jie Tang*, Shuai Tang, You-Hu Chen, Ta-Wei Chiu, Masaki Takeguchi, Lu-Chang Qin*, Nanomaterials 14, 1567-1-1567-11 (2024). "Stable Field Emission from Single Crystalline Zirconium Carbide Nanowires"
DOI:10.3390/nano14191567
AI-Generated Summary: This study reports the synthesis and field emission performance of single-crystalline zirconium carbide (ZrC) nanowires. Using chemical vapor deposition, <100>-oriented ZrC nanowires were grown on graphite substrates with controlled parameters. A single nanowire mounted on a tungsten tip exhibited high emission current density at low turn-on voltage and maintained stability for 150 minutes with minimal fluctuation. These results demonstrate the potential of ZrC nanowires as reliable electron sources for advanced electron-beam applications.
Yuki Nakagawa*, Yasuhiro Shiratsuchi, Tamaki Shibayama, Masaki Takeguchi*, Nanomaterials 14, 1486-1-1486-9 (2024). "Ultraviolet Light-Induced Surface Changes of Tungsten Oxide in Air: Combined Scanning Transmission Electron Microscopy and X-ray Photoelectron Spectroscopy Analysis"
DOI:10.3390/nano14181486
AI-Generated Summary: This study investigates ultraviolet light-induced surface changes in tungsten oxide (WO3) using identical-location STEM and XPS. UV irradiation in air forms an amorphous thin film on the WO3 surface, accompanied by hydrocarbon decomposition and generation of carboxyl/hydroxyl species. These changes suggest photocatalytic oxidation processes. The findings highlight the utility of combined microscopy and spectroscopy for analyzing light-induced surface phenomena in oxide materials.
Naoto Ogiwara, Takenobu Nakano, Koki Baba, Hidenori Noguchi, Tsukuru Masuda, Madoka Takai*, ACS Applied Materials & Interfaces 16, 44575-44589 (2024). "High-Quality Three-Dimensionally Cultured Cells Using Interfaces of Diblock Copolymers Containing Different Ratios of Zwitterionic N‑Oxides"
DOI:10.1021/acsami.4c10118
AI-Generated Summary: This study presents diblock copolymer interfaces with varying ratios of zwitterionic N-oxides for 3D cell culture. The optimized interfaces promote cell aggregation and spheroid formation, enhancing viability and morphology. Surface analysis confirms hydration and protein adsorption control. These materials offer a tunable platform for high-quality cell culture, supporting applications in tissue engineering and regenerative medicine.
Kunie Ishioka*, Oleg V. Misochko, PHYSICAL REVIEW B 110, 094313-1-094313-10 (2024). "Suppression of shear ionic motions in bismuth by coupling with large-amplitude internal displacement"
DOI:10.1103/PhysRevB.110.094313
AI-Generated Summary: This study explores phonon dynamics in bismuth under intense photoexcitation using transient reflectivity measurements. The rhombohedral crystal structure of bismuth exhibits two Raman-active phonon modes: internal displacement (A1g) and shear (Eg). The amplitude of Eg phonons initially increases with pump fluence but then decreases, unlike A1g phonons which saturate. This contrast is attributed to strong coupling between Eg oscillations and large-amplitude A1g displacements in excited states. The findings reveal suppression of shear ionic motions and provide insights into nonequilibrium phonon interactions in semimetals.
Omar Falyouna*, Mohd Faizul Idham, Osama Eljamal, Toshihiko Mandai*, Batteries & Supercaps 7, e202400231-1-e202400231-13 (2024). "Compatibility of Molybdenum Disulfide and Magnesium Fluorinated Alkoxyaluminate Electrolytes in Rechargeable Mg Batteries"
DOI:10.1002/batt.202400231
AI-Generated Summary: This research evaluates the compatibility of molybdenum disulfide (MoS2) cathodes with magnesium fluorinated alkoxyaluminate electrolytes in rechargeable Mg batteries. Electrochemical tests show stable cycling performance and improved interfacial stability. The study highlights the role of electrolyte composition in suppressing side reactions and enhancing Mg-ion transport. These findings contribute to the development of high-performance Mg batteries with improved energy density and long-term stability.
Ryuto Eguchi*, Yu Wen, Hideki Abe, Ayako Hashimoto*, Nanomaterials 14, 1413-1-1413-12 (2024). "Interpretable Structural Evaluation of Metal-Oxide Nanostructures in Scanning Transmission Electron Microscopy (STEM) Images via Persistent Homology"
DOI:10.3390/nano14171413
AI-Generated Summary: This study applies persistent homology to STEM images of Pt–CeO2 nanostructures to extract interpretable geometric features. By analyzing topological descriptors from persistent diagrams, the authors quantify structural disorder and phase connectivity. Hierarchical clustering and inverse analysis reveal key patterns related to arc-like CeO2 structures. The approach enables interpretable classification of nanostructures and offers a new pathway for understanding structure–property relationships in metal-oxide materials.
Kiyoshi Kobayashi*, Shogo Miyoshi, Tohru S. Suzuki, MATERIALS TRANSACTIONS 65, 1397-1401 (2024). "Production of Solidified Body from a Melt and Its Electrical Conductivity of CsSnBr3 Using Precursor Prepared by Mechanochemical Reaction Process"
DOI:10.2320/matertrans.MT-Y2024005
AI-Generated Summary: This study investigates the electrical conductivity of CsSnBr3 synthesized from a melt using a mechanochemically prepared precursor. XRD analysis confirmed CsSnBr3 as the main phase with minor impurities. Initial conductivity measurements showed metallic behavior, but subsequent cooling revealed reversible semiconductor-like characteristics. These findings suggest that thermal history and post-annealing significantly influence the electronic properties of CsSnBr3, offering insights for its application in energy devices.
Eun Jeong Kim, Ryoichi Tatara, Tomooki Hosaka, Kei Kubota, Shinichi Kumakura, Shinichi Komaba*, ACS Applied Energy Materials 7, 1015-1026 (2024). "Effects of Particle Size and Polytype on the Redox Reversibility of the Layered Na0.76Ni0.38Mn0.62O2 Electrode"
DOI:10.1021/acsaem.3c02462
AI-Generated Summary: This study examines how particle size and polytype affect the redox reversibility of Na0.76Ni0.38Mn0.62O2 electrodes for sodium-ion batteries. Smaller particles and specific polytypes enhance reversibility and structural stability during cycling. The results reveal that optimizing these parameters improves electrochemical performance and supports the development of durable, high-capacity sodium-ion battery cathodes.
Rui Sun, Huajian Chen, Man Wang, Toru Yoshitomi, Masaki Takeguchi, Naoki Kawazoe, Yingnan Yang, Guoping Chen*, BIOMATERIALS 307, 122511-1-122511-14 (2024). "Smart composite scaffold to synchronize magnetic hyperthermia and chemotherapy for efficient breast cancer therapy"
DOI:10.1016/j.biomaterials.2024.122511
AI-Generated Summary: This study introduces a smart composite scaffold designed to synchronize magnetic hyperthermia and chemotherapy for breast cancer treatment. The scaffold integrates magnetic nanoparticles and drug-loaded components, enabling controlled heat generation and drug release. In vitro and in vivo tests demonstrate enhanced tumor suppression and reduced side effects. The approach offers a promising strategy for synergistic cancer therapy using multifunctional biomaterials.
Shota Azuma, Itsuki Moro, Mitsuki Sano, Fumisato Ozawa, Morihiro Saito*, Akihiro Nomura*, JOURNAL OF THE ELECTROCHEMICAL SOCIETY 171, 100511-1-100511-8 (2024). "Mechanistic Analysis of Lithium-Air Battery with Organic Redox Mediator-Coated Air-Electrode"
DOI:10.1149/1945-7111/ad7f92
AI-Generated Summary: This study investigates the discharge and charge mechanisms of lithium-air batteries using air electrodes coated with organic redox mediators. The mediators facilitate Li2O2 decomposition and improve reversibility. Electrochemical analysis reveals reduced overpotential and enhanced cycle performance. The findings highlight the role of mediator-coated electrodes in stabilizing reaction pathways and improving energy efficiency, offering a promising strategy for advanced lithium-air battery systems.
Yiyi Zheng, Tian Zhang, Pui-Kit Lee, Qiaohui Duan, Xin Li, Shuyu Dong, Tian Tan, Yao Wang, Denis Y.W. Yu*, ELECTROCHIMICA ACTA 500, 144718-1-144718-9 (2024). "Boosting Li-ion transport for graphite electrodes with lithium bis(fluorosulfonyl)imide salt and methyl acetate additive for fast-charging Li-ion batteries"
DOI:10.1016/j.electacta.2024.144718
AI-Generated Summary: This study demonstrates that combining lithium bis(fluorosulfonyl)imide (LiFSI) salt with methyl acetate additive enhances Li-ion transport in graphite electrodes. The modified electrolyte forms a stable and low-resistance solid electrolyte interphase, improving fast-charging performance. Compared to conventional LiPF6-based systems, the LiFSI formulation achieves higher capacity and better interfacial stability. These results support electrolyte engineering for high-rate lithium-ion batteries.
Qiaohui Duan, Yiyi Zheng, Yu Zhou, Shuyu Dong, Calvin Ku, Patrick H.-L. Sit, Denis Y. W. Yu*, Small 20, 2404368-1-2404368-13 (2024). "Suppressing Formation of Zn-Mn-O Phases by In-situ Ti Decoration of MnO2 for Long Lifespan MnO2-Zn Battery"
DOI:10.1002/smll.202404368
AI-Generated Summary: This study addresses the cycle degradation of MnO2-Zn batteries caused by Zn–Mn–O phase formation. The authors introduce TiOSO4 as an electrolyte additive to achieve in-situ Ti decoration of MnO2, which suppresses unwanted phase transitions and preserves electrode structure. As a result, the battery maintains high capacity and stability over extended cycles, including 75% retention after 10,000 cycles. The approach offers a practical solution for improving the durability of aqueous Zn-ion batteries, making them more viable for long-term energy storage applications.
Masaki Takeguchi*, Kazutaka Mitsuishi, Ayako Hashimoto, Applied Physics Express 17, 085001-1-085001-4 (2024). "Facile preparation of graphene-graphene oxide liquid cells and their application in liquid-phase STEM imaging of Pt atoms"
DOI:10.35848/1882-0786/ad63f2
AI-Generated Summary: This study introduces a simple method for fabricating graphene–graphene oxide liquid cells, enabling high-resolution liquid-phase scanning transmission electron microscopy (STEM). The cells provide a stable imaging environment for observing Pt atoms in solution. The graphene oxide layer enhances mechanical strength and prevents leakage, while maintaining electron transparency. This technique allows direct visualization of atomic-scale dynamics in liquids, offering new insights into catalytic processes and nanoparticle behavior.
Robert D. Hunter, Masaki Takeguchi, Ayako Hashimoto, Kannan M. Ridings, Shaun C. Hendy, Dmitri Zakharov, Nils Warnken, Jack Isaacs, Sol Fernandez-Muñoz, Joaquín Ramirez-Rico*, Zoe Schnepp*, ADVANCED MATERIALS 36, 2404170-1-2404170-10 (2024). "Elucidating the mechanism of iron-catalyzed graphitization: the first observation of homogeneous solid-state catalysis"
DOI:10.1002/adma.202404170
AI-Generated Summary: This paper reveals that iron-catalyzed graphitization proceeds via a homogeneous solid-state catalysis mechanism. Using in-situ dark-field transmission electron microscopy and synchrotron X-ray diffraction, the study shows crystalline iron nanoparticles penetrating amorphous carbon to form multiwalled graphitic nanotubes within minutes. This rapid transformation challenges conventional views of heterogeneous catalysis and opens new possibilities for sustainable carbon material synthesis and energy applications.
Keisuke Yoshikawa, Takeshi Kato, Yasuhiro Suzuki, Akihiro Shiota, Tsuyoshi Ohnishi, Koji Amezawa, Aiko Nakao, Takeshi Yajima, Yasutoshi Iriyama*, Advanced Science 11, 2402528-1-2402528-7 (2024). "Origin of O2 Generation in Sulfide-Based All-Solid-State Batteries and its Impact on High Energy Density"
DOI:10.1002/advs.202402528
AI-Generated Summary: This study investigates oxygen generation in sulfide-based all-solid-state batteries (SBs), identifying Li extraction from amorphous-LiNbO3 coating layers as the source. The released O2 oxidizes surrounding solid electrolytes, degrading battery performance. Substituting Nb with P (forming LiNbxP1−xO3) suppresses O2 release, enabling stable high-voltage cycling. These findings highlight the importance of coating layer design in enhancing energy density and durability of SBs for electric vehicle applications.
Tsuyoshi Ohnishi, Isao Sakaguchi, Kazunori Takada*, ACS Applied Energy Materials 7, 5321-5325 (2024). "Surface Treatment of Garnet-Type Solid Electrolyte for Suppressing Dendritic Growth"
DOI:10.1021/acsaem.4c00805
AI-Generated Summary: This study presents a simple and effective method to suppress dendritic growth in garnet-type solid electrolytes for lithium metal anodes. By immersing the electrolyte in a saturated LiOH solution, surface contamination layers such as Li2CO3 are removed, improving interfacial conductivity and homogenizing current density. Electrochemical tests show enhanced resistance to short-circuiting and improved critical current density. The approach offers a practical solution for stabilizing lithium interfaces in solid-state batteries.
Ravindra Kumar Gupta, Hidehiko Asanuma, Juan J Giner-Casares, Ayako Hashimoto, Tetsuya Ogawa, Takashi Nakanishi*, NANOTECHNOLOGY 35, 335603-1-335603-11 (2024). "A compound eye-like morphology formed through hexagonal array of hemispherical microparticles where an alkyl-fullerene derivative self-assembled at atmosphere-sealed air/water interface"
DOI:10.1088/1361-6528/ad4bef
AI-Generated Summary: This study reports the formation of a compound eye-like morphology via self-assembly of an alkyl-fullerene derivative at an air/water interface sealed by atmosphere. The process yields a hexagonal array of hemispherical microparticles, mimicking natural compound eyes. The structure exhibits unique optical properties and potential applications in photonic devices and sensors. The work highlights the role of interfacial self-assembly in creating complex, functional nanostructures under ambient conditions.
Kaiming Xue, Huimin Wang, Denis Y. W. Yu*, ChemElectroChem 11, e202300661-1-e202300661-15 (2024). "Emerging battery systems with metal as active cathode material"
DOI:10.1002/celc.202300661
AI-Generated Summary: This review explores battery systems using metals like Cu, Fe, and Sn as active cathode materials. These systems offer cost-effective alternatives to lithium-ion batteries by utilizing abundant elements. The paper discusses redox mechanisms, electrolyte compatibility, and strategies to improve reversibility and cycling stability. Various configurations, including aqueous and molten salt electrolytes, are examined. The study highlights the potential of metal cathodes for scalable and sustainable energy storage.
Yu Zhao, Hekang Zhu, Lidan Xing, Denis Y.W. Yu*, Chemical Engineering Journal 493, 152602-1-152602-11 (2024). "Electrolyte design for high power dual-ion battery with graphite cathode for low temperature applications"
DOI:10.1016/j.cej.2024.152602
AI-Generated Summary: This study proposes a low-temperature dual-ion battery using graphite cathodes and a specially formulated electrolyte with LiFSI and methyl acetate. The system achieves high power output and stable cycling at −20 °C, with reduced polarization and enhanced Coulombic efficiency. Electrochemical tests show improved ion transport and interfacial stability. The paper also explores solvation structures and SEI formation, offering insights into cold-climate battery design for electric vehicles and energy storage.
Takahisa Ohno*, Nobuo Tajima, Jun Nara, JAPANESE JOURNAL OF APPLIED PHYSICS 63, 051004-1-051004-6 (2024). "First-principles investigation on potential profile induced in graphene by surface and edge metal contacts"
DOI:10.35848/1347-4065/ad3ed2
AI-Generated Summary: Using first-principles calculations, this paper examines how metal contacts affect graphene’s potential profile. Edge contacts create stronger gradients than surface ones, influencing carrier transport and contact resistance. The study highlights charge redistribution and dipole formation at interfaces, offering guidance for designing efficient graphene-based devices. These insights support improved contact engineering in future electronics.
Katsunori Tagami*, Takahisa Ohno, Jun Nara, Mamoru Usami, JAPANESE JOURNAL OF APPLIED PHYSICS 63, 023001-1-023001-6 (2024). "Magnetic structures and magnetic anisotropy of Mn3−xFexSn studied by first-principles calculations"
DOI:10.35848/1347-4065/ad2303
AI-Generated Summary: This study uses first-principles calculations to examine how Fe substitution affects the magnetic properties of Mn3−xFexSn alloys. Varying Fe content leads to changes in spin configurations and magnetic anisotropy, with some compositions favoring noncollinear structures. The authors analyze magnetic moments and energy landscapes, highlighting the role of spin-orbit coupling. These insights support the development of spintronic materials with tunable magnetic behavior for future device applications.
Fumihiko Uesugi*, Yu Wen, Ayako Hashimoto, Masashi Ishii, MICRON 183, 103664-1-103664-7 (2024). "Prediction of nanocomposite properties and process optimization using persistent homology and machine learning"
DOI:10.1016/j.micron.2024.103664
AI-Generated Summary: This study combines persistent homology and machine learning to predict oxygen permeability and optimize synthesis conditions of Pt/CeO2 nanocomposites. Using TEM-based persistence diagrams and ridge regression, the authors identify structural features linked to activation energy and pre-exponential factors. The model outperforms sparse methods and reveals how local and 3D structures influence transport properties. The approach enables accurate prediction of physical behavior and guides annealing temperature selection, offering a data-driven strategy for nanomaterial design.
Arghya Dutta*, Emiko Mizuki, Yuka Tomori, Shoichi Matsuda*, ACS Applied Energy Materials 7, 3824-3830 (2024). "Optimizing Discharge Rate for Li Metal Stability in Rechargeable Li|NMC Batteries under Lean Electrolyte Condition"
DOI:10.1021/acsaem.4c00180
AI-Generated Summary: This study investigates how discharge rate affects lithium metal stability in Li|NMC811 batteries with lean electrolyte. Cells discharged at 1.6 mA cm−2 show improved cycle life due to suppressed volume expansion of Li electrodes. Higher rates reduce irreversible deformation, while excessive rates cause kinetic limitations in NMC cathodes. The findings highlight an optimal discharge range that balances power and durability, offering insights for designing high-energy lithium metal batteries with extended lifespan.
Yanan Gao, Hitoshi Asahina, Shoichi Matsuda, Hidenori Noguchi, Kohei Uosaki*, PHYSICAL CHEMISTRY CHEMICAL PHYSICS 26, 13655-13666 (2024). "Nature of Li2O2 and its relationship to the mechanisms of discharge/charge reactions of lithium–oxygen batteries"
DOI:10.1039/D4CP00428K
AI-Generated Summary: This study identifies two types of Li2O2 in lithium–oxygen batteries—l-Li2O2 and h-Li2O2—with distinct decomposition voltages. Using online mass spectrometry and isotope-labeled oxygen, the authors analyze gas evolution during charging, revealing links between discharge conditions and O2, H2O, and CO2 generation. The findings clarify reaction pathways and degradation mechanisms, contributing to improved cyclability and design of high-energy Li–O2 batteries.
Arunkumar Dorai*, Sangryun Kim*, Naoaki Kuwata, Junichi Kawamura, Kazuaki Kisu, Shin-ichi Orimo*, Journal of Physical Chemistry Letters 15, 4864-4871 (2024). "Understanding Ion Dynamics in Closoborate-Type Lithium-Ion Conductors on Different Time-Scales"
DOI:10.1021/acs.jpclett.4c00754
AI-Generated Summary: This study investigates ion dynamics in closoborate-type lithium-ion conductors using multi-scale techniques. Through impedance spectroscopy and NMR, the authors reveal distinct time-scale behaviors of Li+ transport, including fast local hopping and slower long-range diffusion. The findings show that structural disorder and anion reorientation significantly influence conductivity. These insights contribute to the design of solid electrolytes with improved ionic mobility for next-generation all-solid-state batteries.
Go Kamesui, Kei Nishikawa, Mikito Ueda, Hisayoshi Matsushima*, JOURNAL OF THE ELECTROCHEMICAL SOCIETY 171, 040519-1-040519-8 (2024). "Elucidation of Mass Transport Phenomena in Highly Concentrated Electrolytes during Current Cycling Using In-Situ Interferometry and Finite Difference Method"
DOI:10.1149/1945-7111/ad3ad1
AI-Generated Summary: This study analyzes mass transport in highly concentrated electrolytes during current cycling using in-situ laser interferometry and numerical modeling. The authors observe dynamic changes in concentration gradients and diffusion layers near electrodes. Finite difference simulations reveal how electrolyte viscosity and ion mobility affect transport behavior. These findings provide a deeper understanding of electrolyte dynamics, aiding the development of stable and efficient lithium-ion battery systems.
Naoya Masuda*, Kiyoshi Kobayashi, Futoshi Utsuno, Naoaki Kuwata, JOURNAL OF SOLID STATE ELECTROCHEMISTRY 28, 4409-4417 (2024). "Enhanced capacity of all-solid-state battery comprising LiNbO3-coated Li(Ni0.8Co0.1Mn0.1)O2 Cathode, Li5.4(PS4)(S0.4Cl1.0Br0.6) solid electrolyte and lithium metal anode"
DOI:10.1007/s10008-024-05886-7
AI-Generated Summary: This study enhances the capacity of all-solid-state batteries using a LiNbO3-coated Li(Ni0.8Co0.1Mn0.1)O2 cathode and halogen-rich Li5.4(PS4)(S0.4Cl1.0Br0.6) solid electrolyte. The addition of carbon improves electronic conductivity, boosting discharge capacity and cycle performance. After 50 cycles, the battery shows high retention and efficiency. The results support the use of argyrodite-type electrolytes and interface engineering for high-performance solid-state energy storage.
Kento Ishii, Yuri Taniguchi, Akira Miura, Shogo Miyoshi, Kazunori Takada, Go Kawamura, Hiroyuki Muto, Atsunori Matsuda, Masayoshi Fuji, Tetsuo Uchikoshi, JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 132, 257-266 (2024). "Surface modification of Li3PO4 to Li1.3Al0.3Ti1.7(PO4)3 by wet chemical process and its sintering behavior"
DOI:10.2109/jcersj2.23208
AI-Generated Summary: This study modifies Li3PO4 into Li1.3Al0.3Ti1.7(PO4)3 (LATP) via wet chemical processing to improve sintering behavior. The modified LATP achieves over 90% densification at 800 °C, about 300 °C lower than conventional LATP. Thermal analysis suggests liquid-phase sintering driven by Li3PO4 decomposition. The resulting electrolyte shows high ionic conductivity (3.5×10−4 S/cm at 25 °C), making it suitable for all-solid-state lithium-ion batteries requiring low-temperature processing.
Atsuki TABO, Hisayoshi MATSUSHIMA, Takahiro OHKUBO, Kei NISHIKAWA, Mikito UEDA*, ELECTROCHEMISTRY 92, 043011-1-043011-6 (2024). "Arrangement of Al Ions between Ionic Liquid and Graphite Electrode Interface by AFM Force Curve Measurement"
DOI:10.5796/electrochemistry.23-69151
AI-Generated Summary: This study uses AFM force curve measurements to analyze the arrangement of Al ions at the interface between AlCl3–EmImCl ionic liquid and graphite electrodes. Stepwise force responses reveal distinct ionic layers, including EmIm+ and Al2Cl7−. The layer thickness varies with applied potential, indicating dynamic ion structuring. These findings provide insight into interfacial behavior in ionic liquids, relevant for electrochemical applications like batteries and metal deposition.
Tsuyoshi Ohnishi*, JOURNAL OF SOLID STATE ELECTROCHEMISTRY 28, 4355-4366 (2024). "Fabrication of thin film batteries composed of LiCoO2, Li3PO4, and Li layers"
DOI:10.1007/s10008-024-05873-y
AI-Generated Summary: This paper reports the fabrication of thin-film batteries using LiCoO2 cathodes, Li3PO4 solid electrolytes, and Li metal anodes. Each layer is deposited using tailored techniques: pulsed laser deposition for LiCoO2, RF magnetron sputtering for Li3PO4, and thermal evaporation for Li. Bias control during deposition prevents resistive interfacial layers. The resulting battery shows high-rate capability and stable performance, demonstrating the potential of thin-film configurations for solid-state energy storage.
Shoichi Matsuda*, ChemElectroChem 11, e202300605-1-e202300605-8 (2024). "New Insights into Fundamental Processes and Physical Degradation Mechanisms in Rechargeable Lithium-Oxygen Batteries Providing Suitably High Energy Densities"
DOI:10.1002/celc.202300605
AI-Generated Summary: This concept article explores key factors affecting lithium–oxygen batteries (LOBs) with energy densities exceeding 500 Wh/kg. It highlights the importance of gas-diffusion layers and protective membranes for lithium electrodes, as well as physical degradation mechanisms like electrode volume change and electrolyte movement. The study emphasizes the need for deeper understanding of reaction pathways and side components to improve cycle life and performance. These insights guide future development of practical high-energy LOBs.
Esmail Doustkhah*, Nao Tsunoji, Shinya Mine, Takashi Toyao, Ken-ichi Shimizu, Tetsuro Morooka, Takuya Masuda, M. Hussein N. Assadi, Yusuke Ide*, ACS Applied Materials & Interfaces 16, 10251-10259 (2024). "Feeble Single-Atom Pd Catalysts for H2 Production from Formic Acid"
DOI:10.1021/acsami.3c18709
AI-Generated Summary: This study develops single-atom Pd catalysts supported on mesoporous carbon for hydrogen production from formic acid. Despite low Pd loading, the catalysts show high turnover frequency and selectivity. DFT calculations reveal that isolated Pd atoms favor dehydrogenation pathways while suppressing CO formation. The work demonstrates that feeble Pd sites can achieve efficient H2 generation, offering a cost-effective and selective approach for clean energy applications.
Xin Zhao, Wan-Peng Li, Yanhui Cao, Arsenii Portniagin, Bing Tang, Shixun Wang, Qi Liu, Denis Y. W. Yu, Xiaoyan Zhong, Xuerong Zheng*, Andrey L. Rogach*, ACS Nano 18, 4256-4268 (2024). "Dual-Atom Co/Ni Electrocatalyst Anchored at the Surface-Modified Ti3C2Tx MXene Enables Efficient Hydrogen and Oxygen Evolution Reactions"
DOI:10.1021/acsnano.3c09639
AI-Generated Summary: This study introduces a dual-atom Co/Ni electrocatalyst anchored on surface-modified Ti3C2Tx MXene for efficient HER and OER. The catalyst achieves low overpotentials and high stability at industrial current densities. DFT calculations show synergistic interactions between Co and Ni atoms, enhancing intermediate adsorption and reaction kinetics. The work provides a promising strategy for designing MXene-based electrocatalysts for water splitting and energy conversion.
Takeshi Ueki*, Koichiro Uto, Shota Yamamoto, Ryota Tamate, Yuji Kamiyama, Xiaofang Jia, Hidenori Noguchi, Kosuke Minami, Katsuhiko Ariga, Hongxin Wang, Jun Nakanishi*, ADVANCED MATERIALS 36, 2310105-1-2310105-10 (2024). "Ionic Liquid Interface as a Cell Scaffold"
DOI:10.1002/adma.202310105
AI-Generated Summary: This study introduces water-immiscible ionic liquids (ILs) as tunable, non-cytotoxic cell scaffolds for culturing human mesenchymal stem cells. By adjusting cationic charge distribution, IL interfaces promote cell adhesion and spreading via protein nanolayer formation. High-speed AFM reveals how ionic structure affects protein adsorption and mechanical feedback. An ion-gel scaffold is also developed, highlighting the role of bulk mechanics in cellular mechanosensing. These findings offer a reusable, low-waste alternative to conventional solid substrates for regenerative medicine.
Toshihiko Mandai*, Umi Tanaka, Shin Kimura, Advanced Energy and Sustainability Research 5, 2400059-1-2400059-10 (2024). "Electrode Engineering Study Toward High-Energy-Density Sodium-Ion Battery Fabrication"
DOI:10.1002/aesr.202400059
AI-Generated Summary: This study explores electrode design strategies for high-energy-density sodium-ion batteries (SIBs). Using Na3V2(PO4)3 and hard carbon electrodes, the authors analyze capacity balance and N/P ratio effects in full-cell configurations. Presodiation techniques and optimized compositions improve energy density and retention. The work emphasizes engineering factors beyond material properties, offering practical insights for scalable, cost-effective SIB development.
Shoichi Matsuda*, Eiki Yasukawa, Shin Kimura, Shoji Yamaguchi, Kohei Uosaki, FARADAY DISCUSSIONS 248, 341-354 (2024). "Evaluation of performance metrics for high energy density rechargeable lithium–oxygen batteries"
DOI:10.1039/D3FD00082F
AI-Generated Summary: This study evaluates lithium–oxygen batteries (LOBs) with stacked-cell configurations under lean electrolyte and high areal capacity conditions. It examines how electrolyte-to-capacity ratio and gas-diffusion layer materials affect voltage profiles and degradation. The findings highlight the importance of experimental setup and cell architecture in assessing cycle life and energy efficiency. These insights support the design of practical high-energy LOBs.
Dhruba B. Khadka*, Yasuhiro Shirai*, Masatoshi Yanagida, Hitoshi Ota, Andrey Lyalin*, Tetsuya Taketsugu, Kenjiro Miyano, Nature Communications 15, 882-1-882-16 (2024). "Defect passivation in methylammonium/bromine free inverted perovskite solar cells using charge-modulated molecular bonding"
DOI:10.1038/s41467-024-45228-9
AI-Generated Summary: This study enhances the performance and stability of methylammonium/bromine-free inverted perovskite solar cells using piperazine dihydriodide (PZDI) for defect passivation. PZDI molecules form strong charge-modulated bonds with the perovskite surface, reducing defect density and suppressing ion migration. The device achieves a certified efficiency of 21.47% and improved operational durability. The findings highlight the role of bifunctional molecules in tuning interfacial chemistry and provide a strategy for designing stable, high-efficiency perovskite solar cells.
Itsuki Konuma, Naohiro Ikeda, Benoît D.L. Campéon, Hinata Fujimura, Jun Kikkawa, Huu Duc Luong, Yoshitaka Tateyama, Yosuke Ugata, Masao Yonemura, Toru Ishigaki, Taira Aida, Naoaki Yabuuchi, Energy Storage Materials 66, 103200-1-103200-11 (2024). "Unified Understanding and Mitigation of Detrimental Phase Transition in Cobalt-free LiNiO2"
DOI:10.1016/j.ensm.2024.103200
AI-Generated Summary: This study investigates phase transitions in cobalt-free LiNiO2 cathodes and proposes defect engineering to suppress degradation. Using synchrotron X-ray and neutron diffraction, the authors identify antisite defects that stabilize the structure and reduce Ni ion migration during cycling. A slightly Ni-rich composition (Li0.975Ni1.025O2) shows enhanced energy density and cycle life. The work offers a practical synthesis route and structural insights for developing sustainable, high-performance cathode materials.
Jittraporn Saengkaew, Emiko Mizuki, Shoichi Matsuda*, Energy Advances 3, 248-254 (2024). "Performance evaluation of lithium metal rechargeable batteries with a lithium excess cation-disordered rocksalt based positive electrode under high mass loading and lean electrolyte conditions"
DOI:10.1039/d3ya00281k
AI-Generated Summary: This study evaluates lithium metal batteries using a lithium-excess cation-disordered rocksalt (DRX) positive electrode under realistic conditions. By optimizing particle size and suppressing slurry gelation, high mass loading (30 mg/cm²) and lean electrolyte usage are achieved. The DRX electrode delivers over 180 mAh/g after 80 cycles, demonstrating strong capacity retention. These results highlight the practical potential of DRX materials for high-energy-density rechargeable batteries.
Ridwan P. Putra, Kyosuke Matsushita, Tsuyoshi Ohnishi, Takuya Masuda*, Journal of Physical Chemistry Letters 15, 490-498 (2024). "Operando Nanomechanical Mapping of Amorphous Silicon Thin Film Electrodes in All-Solid-State Lithium-Ion Battery Configuration during Electrochemical Lithiation and Delithiation"
DOI:10.1021/acs.jpclett.3c03012
Fumisato OZAWA*, Kazuki KOYAMA, Daiki IWASAKI, Shota AZUMA, Akihiro NOMURA, Morihiro SAITO*, ELECTROCHEMISTRY 92, 047003-1-047003-7 (2024). "The Effect of Supply Rate of Li Ion and Anion on Li Dissolution/Deposition Behavior in LiNO3 Electrolyte Solutions for Li-Air Batteries"
DOI:10.5796/electrochemistry.23-00142
Toshihiko Mandai*, Umi Tanaka, Mariko Watanabe, Energy Storage Materials 67, 103302-1-103302-10 (2024). "Mg–Zn–Cl-integrated functional interface for enhancing the cycle life of Mg electrodes"
DOI:10.1016/j.ensm.2024.103302
Shota Azuma, Mitsuki Sano, Itsuki Moro, Fumisato Ozawa, Morihiro Saito*, Akihiro Nomura*, ELECTROCHIMICA ACTA 489, 144261-1-144261-9 (2024). "Improving the cycling performance of lithium-air batteries using a nitrite salt electrolyte"
DOI:10.1016/j.electacta.2024.144261
Reona Iimura, Hiroto Watanabe, Toshihiko Mandai, Itaru Honma, Hiroaki Imai, Hiroaki Kobayashi*, ACS Applied Energy Materials 7, 5308-5314 (2024). "An Electrically Conductive CuMn2O4 Ultrananospinel Cathode for Room-Temperature Magnesium Rechargeable Batteries"
DOI:10.1021/acsaem.4c01211
Hydrogen Technology Materials Field
Taku T. Suzuki*, Soshi Iimura, PHYSICAL REVIEW B 110, 085426-1-085426-10 (2024). "Quench-condensed hydrogen films studied by cryogenic time-of-flight secondary ion mass spectrometry"
DOI:10.1103/PhysRevB.110.085426
Prerna Chettri, Anup Singhania, Sudeshna Kalita, Hidenobu Nakao, Bharati Bora, Ponkaj Saikia, Sanghamitra Dutta, Anirban Bandyopadhyay*, Subrata Ghosh*, Advanced Optical Materials 12, 2400650-1-2500650-8 (2024). "Fluorescent Nanowires from Dual-State Emitting Fluorophores Directed by Molecular Motors and Aggregation-Induced Emission: Produce Quantized Light Spectrum"
DOI:10.1002/adom.202400650
Koji Kamiya*, Kyohei Natsume, Takenori Numazawa, Kohei Ouchi, Tsuyoshi Shirai, Akira Uchida, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 3800805-1-3800805-5 (2024). "Development of a Superconducting Magnet System for Magnetic Refrigeration Using a Switching Power Supply"
DOI:10.1109/TASC.2024.3367966
Daiki Umeyama*, Soshi Iimura, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 146, 33964-33972 (2024). "Ligand-Directed Valence Band Engineering in Pb2+ Hybrid Crystals: Achieving Dispersive Bands and Shallow Valence Band Maximum"
DOI:10.1021/jacs.4c12804
Minoru Maeda, Jun Hyuk Choi, Dong Gun Lee, Akiyoshi Matsumoto, Gen Nishijima, Zhenan Jiang, Nicholas M. Strickland, Jung Ho Kim*, Seyong Choi*, Ceramics International 50, 36042-36049 (2024). "Evaluation of in-plane and out-of-plane crystallinities with residual amorphous phases for MgB2 superconductor"
DOI:10.1016/j.ceramint.2024.06.416
M. Sugano*, A. Kikuchi, H. Kitaguchi, G. Nishijima, T. Yagai, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 8400305-1-8400305-5 (2024). "Uniaxial Tensile Stress Tolerance of Ultra-Thin Nb3Sn Composite Wires and Twisted Cables"
DOI:10.1109/TASC.2024.3355355
S. Matsunaga*, G. Nishijima, Y. Narushima, K. Natsume, N. Yanagi, K. Kamiya, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 4605705-1-4605705-5 (2024). "No-Insulation BSCCO Coils Impregnated With Low-Melting Point Metal"
DOI:10.1109/TASC.2024.3397572
Sherjeel Mahmood Baig, Satoshi Ishii, Hideki Abe*, Nanoscale Advances 6, 2582-2585 (2024). "Sub-50 nm patterning of alloy thin films via nanophase separation for hydrogen gas sensing"
DOI:10.1039/d4na00071d
Wen-Ning Lu, Shunqin Luo*, Yibo Zhao, Jianbing Xu, Gaoliang Yang, Emmanuel Picheau, Minmin Han, Qi Wang, Sijie Li, Lulu Jia, Ming-Xing Ling, Tetsuya Kako, Jinhua Ye*, Applied Catalysis B-Environment and Energy 343, 123520-1-123520-9 (2024). "Bifunctional Co active site on dilute CoCu plasmonic alloy for light-driven H2 production from methanol and water"
DOI:10.1016/j.apcatb.2023.123520
Akiyoshi Matsumoto*, Shigeyuki Matsunami, Hiroshi Narazaki, Shinya Kawashima, Masayoshi Inoue, IEEJ Transactions on Fundamentals and Materials 144, 366-372 (2024). "Example of Data-driven Superconducting Wire Research"
DOI:10.1541/ieejfms.144.366
Kyohei Natsume*, Tsuyoshi Shirai, Akira Uchida, Yusuke Kimura, Yuki Emori, Hiroshi Miyazaki, Gen Nishijima, Koji Kamiya, Koichi Matsumoto, Takenori Numazawa, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 3801005-1-3801005-5 (2024). "Effects of Moving Magnetic Materials in and out of Superconducting Magnet for Active Magnetic Regenerative Refrigeration System"
DOI:10.1109/TASC.2024.3384342
Ryuto Eguchi*, Yu Wen, Hideki Abe, Ayako Hashimoto*, Nanomaterials 14, 1413-1-1413-12 (2024). "Interpretable Structural Evaluation of Metal-Oxide Nanostructures in Scanning Transmission Electron Microscopy (STEM) Images via Persistent Homology"
DOI:10.3390/nano14171413
Hiroshi Amekura*, Norito Ishikawa, Nariaki Okubo, Feng Chen, Kazumasa Narumi, Atsuya Chiba, Yoshimi Hirano, Keisuke Yamada, Shunya Yamamoto, Yuichi Saitoh, Quantum Beam Science 8, 29-1-29-13 (2024). "Metallic Ca Aggregates Formed Along Ion Tracks and Optical Anisotropy in CaF2 Crystals Irradiated with Swift Heavy Ions"
DOI:10.3390/qubs8040029
Min Sung Kim, Jun Ho Yoon, Hyun Kyu Lee, Tamaki Hirose, Yoshihiko Takeda*, Jae Pil Kim*, COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 703, 135118-1-135118-9 (2024). "Binder-enhanced reversible photochromic films by tungsten oxide hybrid composites for advanced applications"
DOI:10.1016/j.colsurfa.2024.135118
Deepak Panchal, Qiuyun Lu, Ken Sakaushi, Xuehua Zhang-, Chemical Engineering Journal 498, 154920-1-154920-23 (2024). "Advanced cold plasma-assisted technology for green and sustainable ammonia synthesis"
DOI:10.1016/j.cej.2024.154920
Kiyosumi TSUCHIYA*, Xudon WANG, Shinji FUJITA, Akio TERASHIMA, Yasushi ARIMOTO, Norihito OHUCHI, Zhanguo ZONG, Akihiro KIKUCHI, TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 59, 246-254 (2024). "Development of HTS Sextupole Magnet for Accelerator"
DOI:10.2221/jcsj.59.246
Akihiro Kikuchi*, Yasuo Iijima, Hiroaki Kumakura, Masaru Yamamoto, Masatoshi Kawano, Masato Otsubo, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 6200104-1-6200104-4 (2024). "Development of the Ultrafine MgB2 Superconducting Wires and Flexible Cables"
DOI:10.1109/TASC.2023.3335881
Min-Sung Kim, Jun-Ho Yoon, Hong-Mo Kim, Dong-Jun Lee, Tamaki Hirose, Yoshihiko Takeda*, Jae-Pil Kim*, Nanomaterials 14, 1121-1-1121-15 (2024). "Amplifying Photochromic Response in Tungsten Oxide Films with Titanium Oxide and Polyvinylpyrrolidone"
DOI:10.3390/nano14131121
Ken-ichi Bajo*, Noriyuki Kawasaki, Isao Sakaguchi, Taku T. Suzuki, Satoru Itose, Miyuki Matsuya, Morio Ishihara, Kiichiro Uchino, Hisayoshi Yurimoto, ANALYTICAL CHEMISTRY 96, 5143-5149 (2024). "In Situ Helium Isotope Microimaging of Meteorites"
DOI:10.1021/acs.analchem.3c05201
Shin Hasegawa*, Satoshi Ito, Gen Nishijima, Satoshi Awaji, Kohki Takahashi, Hidetoshi Hashizume, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 3801110-1-3801110-10 (2024). "Quench Detection in Insulated, NI, and MI (RE)Ba2Cu3O7—x Coils With Superconducting Quench Detectors"
DOI:10.1109/TASC.2024.3404812
Won Seok Lee, Hiroaki Maeda, Yen-Ting Kuo, Koki Muraoka, Naoya Fukui, Kenji Takada, Sono Sasaki, Hiroyasu Masunaga, Akira Nakayama, Hong-Kang Tian*, Hiroshi Nishihara*, Ken Sakaushi*, Small 20, 2401987-1-2401987-10 (2024). "Spontaneous-Spin-Polarized Two-Dimensional π-d Conjugated Frameworks towards Enhanced Oxygen Evolution Kinetics"
DOI:10.1002/smll.202401987
S. Hoshino, N. Ishida, T. Yagai, T. Hamajima, N. Banno*, H. Utoh, Y. Sakamoto, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 1-4 (2024). "Novel Strand Position Detection System Using Thermistor Array for Next Generation Large Fusion Magnet Cable-in-Conduit Conductors"
DOI:10.1109/TASC.2024.3358267
Nobuya Bann*, Taku Moronaga, Toru Hara, Koki Asai, Tsuyoshi Yagai, SUPERCONDUCTOR SCIENCE & TECHNOLOGY 37, 1-10 (2024). "In-depth S/TEM observation of Ti–Hf and Ta–Hf-doped Nb3Sn layers"
DOI:10.1088/1361-6668/ad2982
Hiroki Fujimoto*, Akiyoshi Matsumoto, Shuuichi Ooi, Minoru Tachiki, Masayoshi Inoue, Ryo Teranishi, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 7500604-1-7500604-4 (2024). "Consideration of Magnetic Flux Distribution in Multi−Filamented YBa2Cu3O7−δ Films by Controlling Crystal Array Using Surface−Modified Substrate"
DOI:10.1109/TASC.2024.3362729
Koki Asai, Tsuyoshi Yagai, Nobuya Banno*, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 34, 8600105-1-8600105-5 (2024). "Effect of Hf addition to Nb on Nb3Sn grain morphology under high Sn diffusion driving force"
DOI:10.1109/TASC.2024.3368990
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