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Orimo Lab
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A hydride lab developing materials that store hydrogen and next-generation batteries.
AboutAbout the lab
Hydride science for energy
The Orimo Lab studies hydrides for efficiently converting, storing, and transporting energy.
Hydrogen bonds with most elements, forming a wide variety of materials, including metal and alloy hydrides and complex hydrides.
Drawing on its research infrastructure for synthesizing, evaluating, and analyzing these hydrides, the lab pursues functional design and fundamental science of high-density hydrogen storage materials and fast ion-conducting materials.
The field is closely connected to fuel cells and lithium-ion batteries, as well as to electronic properties and superconductivity.
Key terms
- Hydride
- A compound formed when hydrogen bonds with another element. Examples include metal hydrides and complex hydrides.
- Hydrogen storage material
- A material that takes in hydrogen and stores it in a small volume. Metal hydrides take hydrogen into gaps in the crystal as atoms.
- Ionic conduction
- The flow of electric current caused by ions moving through a solid or liquid. It determines the performance of a battery.
NewsLab news
A paper by Prof. Orimo and colleagues was published in Science and Technology of Advanced Materials
A paper by Prof. Orimo and colleagues was published in High Pressure Research
A paper by Prof. Orimo and colleagues was published in Electrochemistry Communications
Jointly with the Advanced Institute for Materials Research, the University of Tokyo, and others, the lab developed "DIVE," an AI workflow that interprets the figures and tables in papers
An international research team including the University of Tokyo and the University of Cambridge reproduced the synthesis reactions of ultra-high-density hydrides using machine learning
ResearchResearch themes
Hydrogen is not only a useful energy source in itself; used as a raw material, it also makes it possible to create energy-related materials with unprecedented performance. The lab works broadly with hydrides at the core, from synthesis to evaluation and analysis, device fabrication, and theory.
*Illustrative imageExploring materials containing complex hydrides and hydrides
Using a high-temperature, high-pressure synthesis method that can generate hydrogen at tens of thousands of atmospheres, the lab searches for materials with a high hydrogen content. It aims for materials that can be used as superconductors or ion conductors.
*Illustrative imageCreating high-density hydrogen storage materials
Metal hydrides take hydrogen into gaps in the lattice as atoms, so they can store hydrogen more compactly than high-pressure hydrogen gas or liquid hydrogen. By observing absorption and desorption reactions at the atomic level and clarifying the mechanisms behind them, the lab connects its findings to the development of new materials.
*Illustrative imageCreating materials that conduct multivalent ions
To overcome the challenges of performance, safety, and environmental impact in rechargeable batteries, solid electrolytes in which magnesium or calcium act as the charge carriers are needed. The lab's research builds on the mechanism of fast lithium-ion conduction it discovered in boron-based hydrides.
*Illustrative imageDesigning next-generation energy storage devices
The lab is developing new complex hydride-based solid electrolytes and liquid electrolytes for all-solid-state batteries and multivalent-ion batteries. Through control of nanoscale interface structures and process development, it opens up new ways of thinking about devices.
MembersFaculty
The members of the Orimo Lab consist of faculty, academic researchers, project researchers, technical staff, research support staff, doctoral and master's students, and administrative assistants. Faculty from the Advanced Institute for Materials Research (WPI-AIMR) and the Frontier Research Institute for Interdisciplinary Sciences also join in supervising students.As of 2026
- ProfessorShinichi Orimo
- Associate ProfessorToyoto Sato
- Assistant ProfessorYusuke Ohashi
- Assistant ProfessorLOMBARDO Loris Giovanni
- Project ProfessorYoshiya Uwatoko
- Project ProfessorNaoki Uchiyama
- LecturerSAU Kartik
- Assistant ProfessorPHAM Thi Ha My
- Assistant ProfessorZHANG Linda
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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: “Sodium-borohydride-3D-balls” CCoil (talk) / CC BY-SA 3.0 (cropped)
- Exploring materials containing complex hydrides and hydrides: “First diamond anvil cell” Gasper J. Piermarini / Public domain (cropped)
- Creating high-density hydrogen storage materials: “Magnesium-hydride-unit-cell-3D-balls” Ben Mills / Public domain (cropped)
- Creating materials that conduct multivalent ions: “Calcium (Element - 20) 2” James St. John / CC BY 2.0 (cropped)
- Designing next-generation energy storage devices: “Lithium Ion Battery Cell - Cylindrical Cell, Prismatic Cell, Pouch Cell” CRBAman / CC BY-SA 4.0 (cropped)
- Related lab (Takamura-Ishii Lab): “Cerium dioxide sample” Leiem / CC BY-SA 4.0 (cropped)
- Related lab (Murakami-Higashi Lab): “DSC06457 Blast Furnace 4, voestalpine Leoben-Donawitz, 2026” Aciarium / CC BY-SA 4.0 (cropped)
- Related lab (Shigeru Ueda Lab): “DSC03947 Blast Furnaces and Sinter Plant at Night, voestalpine Leoben-Donawitz, 2026-02” Aciarium / CC BY-SA 4.0 (cropped)
- Related lab (Yamamoto-Kobayashi Lab): “Well cell culture plates” Diane A. Reid (Photographer) / Public domain (cropped)
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