Naoto Kitamura 研究室

主宰者：Naoto Kitamura

東京理科大学

AI 要約（直近 5 年の研究成果）

北村研究室では、リチウムイオン電池やマグネシウム電池などの次世代蓄電池の開発を目指し、電池材料の原子配置と電気化学特性の関係を明らかにする研究を行っています。特に、酸化物系の正極・負極材料を対象として、その性能向上のメカニズムを解明することに注力しています。研究手法としては、X線やニュートロン線を用いた全散乱測定によって材料内部の原子配置を詳細に調査し、逆モンテカルロ法でこれを三次元的に再構成しています。また、トポロジー解析や分子動力学計算、第一原理計算を組み合わせることで、イオン拡散経路やイオンの動きやすさを定量的に評価しています。さらに、置換化学や焼結温度制御、ボールミリング処理など、合成プロセスの最適化を通じて材料特性を改善する取り組みも行っています。これらの研究から、酸化物材料内のリチウムやマグネシウムなどの多価イオンの拡散は、単なる結晶構造だけでなく、原子スケールの局所構造や空隙ネットワークのトポロジー（幾何学的形状）に大きく影響されることが示されています。結晶構造の平均像には表れない原子レベルでの微細な配置変化を捉えることで、電池材料のイオン伝導性能を飛躍的に向上させられる可能性を示唆しています。

※ AI（Claude）が、公開されている論文要旨から研究の問い・手法・主要な発見を事実情報として抽出・再構成して自動生成しています。誤りを含む可能性があるため、正確性は研究室公式情報でご確認ください。

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研究成果（54 件）

[2026] Substitutional Design of Nanosized α-MnO 2 Cathode for Rechargeable Magnesium Battery
DOI: https://doi.org/10.1021/acsaem.6c00722
[2026] Cation distribution and diffusion-path topologies of A-site-deficient perovskite LixLa(1−x)/3NbO3
[2025] Isomorphous metal 1,3,5-benzenetriphosphonates MBP-1 with variable compositions: preparation, crystal structure, and electrochemical properties
DOI: https://doi.org/10.1039/d5dt00773a
[2025] Cation distribution and diffusion-path topologies of A-site-deficient perovskite LixLa(1−x)/3NbO3
DOI: https://doi.org/10.2109/jcersj2.25074
[2025] Column-like La arrangement in (Li, La)NbO3 lithium ion conductor unveiled by x-ray fluorescence holography
DOI: https://doi.org/10.1063/5.0275735
[2025] First-Principles Study of Stable Local Structures and Mg Insertion/Detachment Mechanism During Charge–Discharge of Spinel Mg(Co, Ni, Mn, Al)2O4 as Cathode Materials of Magnesium Secondary Batteries
DOI: https://doi.org/10.1021/acs.jpcc.5c03254
[2025] Stable structure and pair distribution function analysis of 0.4Li2MnO3–0.6Li(Mn1/3Ni1/3Co1/3)O2 as cathode materials lithium ion secondary batteries during charge-discharge process using first-principle calculation and quantum beam
DOI: https://doi.org/10.1016/j.ssi.2025.116793
[2025] Elongation and compression of Fe-Fe atomic pairs in Fe-Ni invar alloys: Microscopic observations of the magnetovolume effect in ferromagnetic Fe-Ni fcc-based alloys
DOI: https://doi.org/10.1103/b3cl-fy2t
[2025] Effect of Ball Milling on the Atomic Configuration of Li1.3Nb0.3Fe0.4O2 with a Disordered Rocksalt Structure
DOI: https://doi.org/10.2497/jjspm.25-00016
[2025] Composition Dependencies of Positive Electrode Properties and Local Structures of Li1+xNbxFe1-2xO2 with a Disordered Rocksalt Structure
DOI: https://doi.org/10.2497/jjspm.16d-sis11-02

続きを表示（残り 44 件）

[2025] Effects of Metal Composition and Preparation Process on Negative Electrode Properties and Crystal Structure of Ga-Substituted TiNb2O7
DOI: https://doi.org/10.5796/electrochemistry.25-71036
[2025] Cathode Properties, Average and Electronic Structures of αLi2MnO3–(1 − α)Li(Mn10/24Ni7/24Co7/24)O2 in Li-ion Batteries with TiNb2O7 Anode
DOI: https://doi.org/10.5796/electrochemistry.25-71032
[2025] Investigation of Topology Hidden in the Atomic Configuration of Crystals
DOI: https://doi.org/10.5940/jcrsj.67.23
[2025] Ultrasmall α-MnO2 with Low Aspect Ratio : Applications to Electrochemical Multivalent-Ion Intercalation Hosts and Aerobic Oxidation Catalysts
[2025] Ultrasmall α‐MnO2 with Low Aspect Ratio: Applications to Electrochemical Multivalent‐Ion Intercalation Hosts and Aerobic Oxidation Catalysts
DOI: https://doi.org/10.1002/smll.202411493
[2025] Unravelling the density-driven modification of the topology generated by the interconnection of SiO4 tetrahedra in silica polymorphs
DOI: https://doi.org/10.2109/jcersj2.2409302
[2024] Investigation of Stable Structures, Electronic States and Mechanism of Mg Intercalation of MgCo2−ZNi0.5MnAlzO4 (z = 0, 0.3) during Charge and Discharge Process as Cathode Materials for Magnesium Rechargeable Batteries Using First-Principles Calculations
DOI: https://doi.org/10.1149/ma2024-023354mtgabs
[2024] Relationship between network topology and negative electrode properties in Wadsley–Roth phase TiNb2O7
DOI: https://doi.org/10.1038/s41427-024-00581-5
[2024] Synthesis, Conductive Properties, and Crystal and Electronic Structures of Nasicon-Type Li1.5Al0.5Ge1.5-XMx(PO4)3[M=Mn, V, Mo]
DOI: https://doi.org/10.1149/ma2024-02674482mtgabs
[2024] Cathode Properties Crystal and Electronic Structures of αLi2MnO3-(1-α)Li(Mn10/24Ni7/24Co7/24)O2 in Li Ion Batteries with TiNb2O7 anode
DOI: https://doi.org/10.1149/ma2024-02674398mtgabs
[2024] Synthesis, Cathode Properties and Crystal and Electronic Structure Changes in Charge/Discharge Process of Spinel Type Cathode-Materials 0.3MgCo2-XMnxO4-0.7Mg(Mg0.33V1.67-yNiy)O4 for Magnesium Secondary Batteries
DOI: https://doi.org/10.1149/ma2024-0291422mtgabs
[2024] Osteopontin Promotes Cholangiocyte Secretion of Chemokines to Support Macrophage Recruitment and Fibrosis in <scp>MASH</scp>
DOI: https://doi.org/10.1111/liv.16131
[2024] Unravelling the density-driven modification of the topology generated by the interconnection of SiO4 tetrahedra in silica polymorphs
DOI: https://doi.org/10.2109/jcersj2.24093
[2024] Operating-temperature Dependence of the Average and Electronic Structures of 0.4Li2MnO3–0.6Li(Mn1/3Ni1/3Co1/3)O2
DOI: https://doi.org/10.5796/electrochemistry.24-00086
[2024] Effect of Intermediate-Range Structure on Negative Electrode Properties of Wadsley–Roth Phase Ti2Nb10O29
DOI: https://doi.org/10.5796/electrochemistry.24-00066
[2024] Effect of heat treatment on positive electrode properties and crystal structures of Mo-modified MgMn2O4
DOI: https://doi.org/10.1093/chemle/upae117
[2024] Synthesis of hyperordered permanently densified silica glasses by hot compression above the glass transition temperature
DOI: https://doi.org/10.2109/jcersj2.24013
[2023] Investigation of Stable Structures and Electronic States of Spinel-Structured MgCo2–zNi0.5MnAlzO4 (Z = 0, 0.3) as Cathode Materials for Magnesium Rechargeable Batteries Using First-Principles Calculations
DOI: https://doi.org/10.1021/acs.jpcc.3c01971
[2023] First-principle calculations of stable configurations and electronic structures of pristine and discharged spinel Mg1.31V1.67-xNixO4 (x = 0, 0.13) as cathode materials for magnesium secondary batteries
DOI: https://doi.org/10.1016/j.commatsci.2023.112087
[2023] Synthesis, Electrochemical Properties and Crystal and Electronic Structure Changes in Charge/Discharge Process of Spinel Type Cathode-Materials Mg1.33-Y(V1.67-x+yMnx)O4 for Magnesium Secondary Batteries
DOI: https://doi.org/10.1149/ma2023-024637mtgabs
[2023] Investigation of Stable Structures and Electronic States of Spinel MgCo2−ZNi0.5MnAlzO4 (z = 0, 0.3) during Discharge Process As Cathode Materials for Magnesium Rechargeable Batteries Using First-Principles Calculations
DOI: https://doi.org/10.1149/ma2023-024730mtgabs
[2023] Local Structure Analysis of Crystalline Materials by Reverse Monte Carlo Modeling Using Quantum Beam Total Scattering Data
DOI: https://doi.org/10.5940/jcrsj.65.213
[2023] Rate Dependence of the Average Crystal Structure and Electronic Structure of 0.5Li2MnO3–0.5LiMn10/24Ni7/24Co7/24O2 for a Lithium-Ion Battery Positive Electrode Material in Steady State
DOI: https://doi.org/10.1021/acsaem.3c01773
[2022] Effects of Ca substitution on the local structure and oxide–ion behavior of layered perovskite lanthanum nickelate
DOI: https://doi.org/10.3389/fmats.2022.954729
[2022] First-principles calculations of stable local structures and electronic structures of magnesium secondary battery cathode materials, MgCo2−xMnxO4 (x = 0, 0.5), in second charged state after first discharge
DOI: https://doi.org/10.1007/s10008-021-05098-3
[2022] Reverse Monte Carlo analysis of NaI-LiI solid electrolyte based on the neutron total scattering data
DOI: https://doi.org/10.1016/j.mtcomm.2022.104014
[2022] Facile Surface Modification of MgMn2O4 Positive-Electrode Material for Improving Cycle Performance of Magnesium Rechargeable Batteries
DOI: https://doi.org/10.1021/acsomega.2c06633
[2022] Electrochemical properties and crystal and electronic structure changes during charge/discharge of spinel type cathode-materials Mg1.33V1.67-Mn O4 for magnesium secondary batteries
DOI: https://doi.org/10.1016/j.jelechem.2022.117064
[2022] Positive-electrode properties and crystal structures of Mg-rich transition metal oxides for magnesium rechargeable batteries
DOI: https://doi.org/10.1038/s41598-022-23022-1
[2022] Visualization of the disordered structure of Fe-Ni Invar alloys by reverse monte carlo calculations
DOI: https://doi.org/10.3389/fmats.2022.954110
[2021] Composition dependence of ferroelectric properties and crystal structure of (K,Na)NbO 3 based ferroelectrics, and other elements substitution effect
[2021] Average and local structure analysis of Na/Li ion-exchanged Lix(Mn,Ni,Ti)O2 using synchrotron X-ray and neutron sources
DOI: https://doi.org/10.1007/s10008-021-04909-x
[2021] Single-phase synthesis, average, electronic, and local structure and cathode properties of pyroxene type LiFeSi2O6
DOI: https://doi.org/10.1007/s11581-020-03876-z
[2021] Atomic-configuration Analysis on a Positive-electrode Nanoparticle by a Reverse Monte Carlo Modeling Using Total Scattering Data
[2021] Electrochemical Properties and Crystal and Electronic Structures of Spinel αMgCo2−xMnxO4-(1 − α)Mg(Mg0.33V1.67−yNiy)O4 for Magnesium Secondary Batteries
DOI: https://doi.org/10.5796/electrochemistry.21-00123
[2021] Temperature dependence of electrode properties, and average, local and electronic structures during charge/discharge processes of lithium-ion battery cathode material 0.5Li2MnO3-0.5Li(Mn10/24Ni7/24Co7/24)O2
[2021] Synthesis of spinel-type (Mg, Zn) (Co, Fe) 2 O 4 and examination of positive electrode characteristics and crystal structure
[2021] Average / local structure analysis of magnesiated Li 0.3 Mn 0.54 Ni 0.13 Co 0.13 O 2-δ
[2021] Conversion Reaction and Average and Local Structures of Anode Material H 2 TiO 3 in Li-Ion Battery
[2021] Depends on heat treatment of electrode performance and average , local structures of spinel Mg 1+z Co 2-x-y Mn x Ni y O 4 as Mg secondary battery cathode material.
[2021] Average and local structure analyses of (La, Pr) 2 NiO 4+δ based layered perovskite-type oxide by total scattering measurements and molecular dynamics simulation
[2021] Elongation of Fe-Fe atomic pairs in the Invar alloy <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Fe</mml:mi><mml:mn>65</mml:mn></mml:msub><mml:msub><mml:mi>Ni</mml:mi><mml:mn>35</mml:mn></mml:msub></mml:mrow></mml:math>
DOI: https://doi.org/10.1103/physrevb.103.l220102
[2021] Revisiting Delithiated Li1.2Mn0.54Ni0.13Co0.13O2: Structural Analysis and Cathode Properties in Magnesium Rechargeable Battery Applications
DOI: https://doi.org/10.5796/electrochemistry.21-00038
[2021] Theoretical Study Using First-Principles Calculations of the Electronic Structures of Magnesium Secondary Battery Cathode Materials MgCo2−xMnxO4 (x = 0, 0.5) in the Pristine and Discharged States
DOI: https://doi.org/10.5796/electrochemistry.21-00024

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AI 要約（直近 5 年の研究成果）

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研究成果（54 件）

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