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Okubo Lab
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More efficient, longer-lasting, and safer: the lab aims to create dream energy storage devices.
AboutAbout the lab
Creating dream energy storage devices, starting from the materials.
The Okubo Lab develops energy storage devices (batteries, capacitors, etc.) that provide a stable, low-cost electricity supply in a sustainable society.
Energy storage devices, including lithium-ion batteries, are widely used in society, and people can no longer be without them even for a moment.
The lab will create dream energy storage devices that are more efficient, longer-lasting, and safer.
From the viewpoints of materials science and energy storage device engineering, the lab creates ideas for batteries never seen before, and the materials that make them possible.
Key terms
- Secondary battery
- A battery that can be recharged and used repeatedly. It converts electrical energy into chemical energy to store it, and releases it when needed.
- Capacitor
- An energy storage device that stores electricity without causing chemical change and can charge and discharge quickly.
- Energy density
- A quantity expressing how much energy can be stored per unit of weight or volume.
NewsLab news
A paper by Professor Okubo and colleagues was published in ACS APPLIED MATERIALS & INTERFACES
A paper by Professor Okubo and colleagues was published in ACS APPLIED ENERGY MATERIALS
A collaborative study in which Professor Okubo participated visualized in situ the battery reactions of the two-dimensional material MXene
Professor Okubo's research group demonstrated a longer lifetime for safe, low-cost aqua batteries
A paper by Professor Okubo and colleagues was published in ACS Applied Materials & Interfaces
ResearchResearch themes
The lab works on developing energy storage devices that provide a stable, low-cost electricity supply in a sustainable society. It studies, from both materials science and energy storage device engineering perspectives, electrode materials that convert electrical energy into chemical energy with high efficiency and store it, as well as electrolytes and interfaces that transport it without loss.
*Illustrative imageBatteries
Secondary batteries play a major role as power sources, from portable devices to mobile systems. To solve the problems of the lithium-ion batteries now in use, the lab creates batteries never seen before, and the materials that make them possible, such as sodium-ion batteries with no resource constraints, aqua batteries that ensure high safety, and anion batteries that realize ultra-high-density energy storage.
*Illustrative imageCapacitors
Capacitors are energy storage devices that can store and supply electrical energy at high speed without chemical change, and they are indispensable for IT system backup and for giving power systems flexibility. The lab develops materials and energy storage systems that lead to high-performance capacitors, such as constructing interface structures that store electrical energy at high density.
MembersFaculty
The members of the Okubo Lab consist of faculty, visiting faculty, secretaries, technical staff, and doctoral, master's, and undergraduate students.As of 2025
- ProfessorMasashi Okubo
VoicesStudent voices
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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)
- Batteries: “Halite crystal with orange inclusions” Ra'ike / CC BY-SA 3.0 (cropped)
- Capacitors: “Activated Carbon” Ravedave (talk) / CC BY 2.5 (cropped)
- Related lab (Takahiko Lab): “CornstarchCymatics cc” Collin Cunningham / CC BY-SA 3.0 (cropped)
- Related lab (Kondo Lab): “StrassenbahnPantograph” ProhibitOnions / Public domain (cropped)
- Related lab (Hayashi Lab): “Electric transmission power tower” Foto3821 / CC0 (cropped)
- Related lab (Hamada Lab): “Ion Proton Sequencers, BGI Shenzhen” Scotted400 / CC BY 3.0 (cropped)
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