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Todoroki Lab
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The lab studies the surfaces of catalysts that use electricity to convert hydrogen and carbon dioxide.
AboutAbout the lab
Carbon neutrality, starting from the catalyst surface
The Todoroki Lab studies catalyst and electrode materials used in water electrolysis, fuel cells, carbon dioxide electrolysis, and similar devices.
The performance of these devices depends heavily on the arrangement of atoms and the electronic state at the catalyst surface, and on the interfaces where different materials meet.
The lab aims to understand from the fundamentals what happens there and, based on that knowledge, to create new materials for practical use.
Its goal is to contribute to realizing a hydrogen society and achieving carbon neutrality.
Key terms
- Electrocatalyst
- An electrode material that lets electrically driven chemical reactions proceed quickly with less energy
- Water electrolysis
- Using electricity to split water and obtain hydrogen and oxygen
- Interface
- The boundary where different kinds of materials meet. How easily electricity flows and how durable the material is are determined here
NewsLab news
An undergraduate student received the Excellent Poster Award at the interim presentation of graduation theses
A paper on platinum-based fuel cell catalysts, from international joint research with Purdue University in the US and others, was published in Nature Energy
A paper on water electrolysis catalysts on iron-nickel alloys, from joint research with a company, was published in Chem Catalysis
A master's student received the Excellent Student Presentation Award at the 93rd Annual Meeting of the Electrochemical Society of Japan
ResearchResearch themes
The performance of devices that support carbon neutrality, such as water electrolysis, fuel cells, and carbon dioxide electrolysis, varies greatly with the catalyst materials used in the electrodes. The lab clarifies the mechanisms of the surfaces and interfaces that determine this performance and applies them to creating materials for practical use.
*Illustrative imageCatalysts for Water Electrolysis
The lab uses vacuum deposition to make model catalysts with controlled atomic arrangements at the surface and interface, and investigates the structural factors that determine water electrolysis performance. It has also developed a method that applies electrochemical treatment to stainless steel to form a highly active catalyst layer.
*Illustrative imageCatalysts for Fuel Cells
For platinum-based catalysts, the core of a fuel cell, the lab makes model catalysts whose structure is controlled at the atomic level using ultra-high vacuum equipment, and examines their activity and durability. It explores ways to reduce the amount of platinum used through alloying and core-shell structures.
*Illustrative imageNew Electrocatalysts and Reaction Analysis
Focusing on tantalum nitride as a catalyst for producing ozone with electricity, the lab found that production efficiency varies greatly depending on the crystal structure. It is also developing inexpensive, high-performance catalysts for the electrolytic refining of zinc.
*Illustrative imageCatalysts for Carbon Dioxide Reduction
The lab works on reactions that convert carbon dioxide into carbon monoxide, methane, ethanol, and other products at room temperature and atmospheric pressure. Using single-crystal model catalysts, it investigates how the atomic structure of the surface affects what is produced and how much.
MembersFaculty
The Todoroki Lab consists of faculty members, doctoral, master's, and undergraduate students, students from the Nippon Steel collaborative chair, research assistants, and administrative assistants.As of 2026
- ProfessorNaoto Todoroki
- Project Assistant ProfessorFangyi Yao
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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: “An example of an electrolytic ozone generator” Mdemyer / CC BY-SA 4.0 (cropped)
- Catalysts for Water Electrolysis: “Iridium foil” Dschwen / CC BY 2.5 (cropped)
- Catalysts for Fuel Cells: “Cluster2nm” Vadim A. Volochaev, ResearcherID: N- (Chemistry Department, Southern Federal University, Rostov-on-Don, Russia) / CC BY-SA 4.0 (cropped)
- New Electrocatalysts and Reaction Analysis: “F. J. Horgan ozone generator” BrandonXLF / CC BY-SA 4.0 (cropped)
- Catalysts for Carbon Dioxide Reduction: “Gold-crystals” Alchemist-hp (talk) www.pse-mendelejew.de / CC BY-SA 3.0 de (cropped)
- Related lab (Muto-Nishimoto Lab): “Rust on the needle” Kiran Vati K / CC BY 4.0 (cropped)
- Related lab (Takamura-Ishii Lab): “Cerium dioxide sample” Leiem / CC BY-SA 4.0 (cropped)
- Related lab (Ichitsubo Lab): “Magnesium crystals” Warut Roonguthai / CC BY-SA 3.0 (cropped)
- Related lab (Kameoka Lab): “Catalytic converter 20230510” Santeri Viinamäki / CC BY-SA 4.0 (cropped)
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