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Quantum Energy Conversion Materials Lab
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The lab uses quantum beams to create materials that withstand harsh environments, as well as materials for batteries and hydrogen.
AboutAbout the lab
Creating the materials of the future with quantum beams.
The Quantum Energy Conversion Materials Lab researches the creation of new materials using quantum beams such as ions, electrons, and light, as well as plasma.
The lab works on developing new energy materials that withstand extremely harsh conditions, as well as functional materials such as all-solid-state battery materials and hydrogen storage alloys.
Using transmission electron microscopy (TEM), the lab examines the fine structure of materials and clarifies how their properties emerge.
International students and postdocs from China, Malaysia, and other countries join the research, which is carried out with green technology in mind.
Key terms
- Quantum beam
- A narrowly focused beam of ions, electrons, light, or the like directed at a material. It can be used to examine a material or to change its properties
- Transmission electron microscope (TEM)
- A microscope that passes electrons through a thin specimen to see its internal structure at a resolution close to the atomic scale
- Solid electrolyte
- A solid material that carries ions inside a battery. Using it in place of a liquid electrolyte makes an all-solid-state battery
NewsLab news
Assistant Professor Nakagawa received the Young Faculty Encouragement Award from the Faculty of Engineering for FY2025 (Reiwa 7)
A doctoral student received the Outstanding Presentation Award at the 68th Symposium of the Japanese Society of Microscopy
Assistant Professor Nakagawa received the Outstanding Poster Award at the 81st Annual Meeting of the Japanese Society of Microscopy
A paper by a master's student was published and selected for Supplementary Cover Art
A master's student received the Excellent Poster Award at the 14th Polish-Japanese Joint Seminar on Micro and Nano Analysis
ResearchResearch themes
Building on research in non-equilibrium science and nanomaterials using quantum beams (ions, electrons, light, and so on) and plasma, the lab creates new energy materials that withstand harsh conditions and forward-looking functional materials. It also investigates how material properties emerge, through microstructure analysis by transmission electron microscopy.
*Illustrative imageIn situ observation of materials with quantum beams
The lab built a system that integrates a laser irradiation device into an ultra-high voltage electron microscope, making it possible to observe changes while a specimen is irradiated simultaneously with electrons, ions, and light. Inside the microscope, it also investigates how cracks propagate in SiC/SiC composites, which are promising core materials for gas-cooled reactors.
*Illustrative imageMaterials for harsh environments
The lab established a method to evaluate, with electron microscopy, the strain remaining at the boundary between helium-ion-irradiated and unirradiated regions in SiC, a material considered for use in harsh environments. It has also found that irradiating copper with helium ions suppresses its oxidation in water.
*Illustrative imageMaking solid electrolytes from hydrides
The lab found that mixing oxide ceramics into lithium borohydride makes lithium ions move more easily. Using electron microscopy techniques to visualize lithium at the nanoscale, it also works on developing solid electrolytes made from abundant elements.
*Illustrative imageHydrogen storage materials and surface modification
The lab develops new materials and performs electron microscopy analysis on complex hydrides and titanium-iron alloys that store hydrogen. It has found that forming a film on a titanium surface by pulsed laser irradiation in an organic solvent shifts the temperature at which the titanium absorbs hydrogen to a higher value.
MembersFaculty
The members of the Quantum Energy Conversion Materials Lab include faculty, academic researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTamaki Sibayama
- Assistant ProfessorYuki Nakagawa
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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: “TEM image of gold nanoparticles and nanorods” Fionán / CC BY-SA 4.0 (cropped)
- In situ observation of materials with quantum beams: “Silicon carbide detail” The original uploader was Hadal at English Wikipedia. / CC BY-SA 3.0 (cropped)
- Materials for harsh environments: “BLW Carborundum crystals” John Faithfull / CC BY-SA 2.0 uk (cropped)
- Making solid electrolytes from hydrides: “Lithiumborhydrid” Speedpera / CC BY 4.0 (cropped)
- Hydrogen storage materials and surface modification: “Titan-crystal bar” Alchemist-hp (pse-mendelejew.de) / CC BY-SA 3.0 (cropped)
- Related lab (中性子ビーム応用理工学): “Neutron Image of Asiatic Lilies Inside a Lead Cask ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (プラズマ生体応用工学): “LHD plasma vacuum vessel” National Institute for Fusion Science / CC BY-SA 4.0 (cropped)
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- Related lab (プラズマ材料工学): “Plasma generation in air” Rcaravit / CC BY 4.0 (cropped)
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