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Inorganic Chemistry Lab
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The lab aims to build next-generation rechargeable batteries from materials in which ions move through solids.
AboutAbout the lab
Ions in solids will change rechargeable batteries.
The Inorganic Chemistry Lab studies "solid-state ionics materials," in which ions move through a solid.
In a rechargeable battery, electricity flows as ions move through such materials, so discovering a new material can lead to proposing a new battery.
The lab searches for materials that use sodium or magnesium as the charge carrier, and also develops methods to synthesize them at lower temperatures.
Using its knowledge of materials and the techniques needed for evaluation and analysis, the lab aims to clarify the challenges that materials pose for next-generation rechargeable batteries and to propose new materials that solve them.
Key terms
- Solid-state ionics materials
- Materials in which ions move through a solid and carry electric charge. They work inside rechargeable batteries.
- Deposition
- A dissolved substance coming out as a solid. In batteries, metal ions return to metal and build up on the electrode surface.
- Crystal growth
- The process in which atoms or ions line up in an orderly way and a crystal gets larger.
NewsLab news
A doctoral student won the Best Poster Award at the France-Japan Symposium on Lithium Batteries
A doctoral student's paper was selected for the cover of ACS Applied Energy Materials
A master's student won the Best Poster Award at the International Forum of Solid State Batteries
A master's student won the Outstanding Student Presentation Award at the 93rd Annual Meeting of the Electrochemical Society of Japan
An undergraduate student won the Excellent Presentation Award at the Winter Research Presentation Meeting of the Hokkaido Branch of the Chemical Societies
ResearchResearch themes
The properties of a rechargeable battery depend heavily on electrode design and the cell fabrication process. Drawing on the materials knowledge built up through earlier research and the techniques needed for evaluation and analysis, the lab aims to clarify the fundamental challenges that materials pose for realizing next-generation rechargeable batteries, and to propose new materials that solve them.
*Illustrative imageSearching for new solid-state ionics materials
Rechargeable batteries are made of solid-state ionics materials, in which electricity flows through ion conduction in a solid. Discovering a new material can lead to proposing a new battery. The lab searches for materials that use sodium or magnesium as the carrier ion, aiming for next-generation rechargeable batteries to replace lithium-ion batteries.
*Illustrative imageA synthesis process at lower temperatures
Crystals of many solid-state ionics materials do not grow unless heated to a high temperature of about 800 to 1000 °C, because metal ions need a large amount of energy to move within a solid. The lab examines the intermediate products formed as oxides and sulfides are made, analyzes how crystal nuclei form and grow, and develops methods to obtain materials with high ionic conductivity at lower temperatures.
*Illustrative imageCrystal growth during metal deposition
More than 150 years have passed since the lead-acid battery, the first rechargeable battery, yet no rechargeable battery that relies on metal dissolving and depositing has been put into practical use. Most metals do not deposit uniformly when reduced electrically, which causes short circuits in the cell. Focusing on magnesium, whose deposits have very flat surfaces, the lab works to clarify the factors that determine the surface shape of the deposited metal and to control the process of crystal growth.
MembersFaculty
The members of the Inorganic Chemistry Lab are faculty, postdoctoral researchers, technical assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorMasaki Matsui
- Assistant ProfessorAkira Nasu
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Lithium-Ion Cell cylindric” RudolfSimon / CC BY-SA 3.0 (cropped)
- Searching for new solid-state ionics materials: “18650 and 21700 lithium ion battery cell” Sevenethics / CC0 (cropped)
- A synthesis process at lower temperatures: “Horno tubular” Manuel Almagro Rivas / CC BY-SA 4.0 (cropped)
- Crystal growth during metal deposition: “Cr Periodic Table of Elements” Robertokamalov / CC BY 4.0 (cropped)
- Related lab (有機金属化学研究室): “Double vac line side view” Polimerek / CC BY-SA 3.0 (cropped)
- Related lab (情報化学研究室): “Industrial automation setup shows robotic arm and equipment for laboratory tasks” Shixart1985 / CC BY 2.0 (cropped)
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