Members/Research Themes
Research Topics
The following are the research themes we are working on. With a focus on ion conductive species including lithium, hydride, proton, and oxygen, we aim to create our own research area in the boundary region of solid-state chemistry and electrochemistry.
1. Synthesis of inorganic solids and development of their structures and properties
- Materials synthesis under various synthetic conditions using conventional solid-phase and liquid-phase syntheses, ultra-high-pressure synthesis, pulsed laser deposition (PLD), and vacuum sealing.
- Structural analysis by neutrons and synchrotron X-rays
- Elucidation of the mechanisms of ionic conduction and charge exchange reaction
- Ion-charge exchange reaction properties and their development to fuel cells
- Frustrated magnetism of triangular lattice, pyrochlore lattice, and kagome lattice
- Main material system: perovskite oxides, pyrochlore oxides, layered rock salt type oxides, olivine-type oxides, and NASICON-type oxides
2. Material development focusing on lithium for new electrochemical devices
- Intercalation electrodes: layered rocksalt type, spinel type, and olivine type oxides
- Electrodes with a new reaction mechanism: transition metal oxides with angstrom to nanometer size pores
- Lithium ion conductor: LGPS (Li10GeP2S12) type and argyrodite type sulfides
３. Elucidation of electrochemical reactions at electrode-electrolyte interfaces using thin-film models with an ideal reaction field
- Synthesis of epitaxial films with pulsed laser deposition (PLD)
- Direct observation on the electrode-electrolyte interfaces under battery operation using surface X-ray diffraction, X-ray/neutron reflectometry, hard X-ray photoemission spectroscopy (HAXPES).
- Material development for lithium ion batteries and all solid-state batteries based on interfacial phenomena
4. Development of all solid-state electrochemical devices
- Fabrication of all solid-state batteries including LGPS type solid electrolytes with extremely high lithium ion conductivity
- Evaluation of battery performance using various electrochemical methods
５. Material development focusing on hydride and proton for new electrochemical devices
- Hydride ion conductive oxyhydrides: developing new ion conductive species and related electrochemical and chemical reactions
- Proton conductive materials: developing materials with high conductivity at intermediate temperatures
- Proton storage materials: transitional metal nitrides and more
6. Material development focusing on oxygen for new electrochemical devices
- Fabrication and reaction analysis of model SOFC electrodes for low temperature-operation
Our Laboratory Team Members (2023)
- Professors: 7
- Research Staffs: 2
- Specifically Assigned Technical Staff: 3
- Technical Support Staffs: 26
- Dispatched Researcher: 4
- Specifically Assigned Administrative Staff: 2
- Administrative Support Staffs: 2
- Secretaries: 4
- Doctoral Students: 4 *The numbers include 3 working adults, 1 international student
- Master’s Students: 6 *The numbers include 1 international student
