LAB LOGA page on LabLog, a review site (not the lab's official page)
Hirayama Lab
Machine-translated · View original
The lab creates next-generation rechargeable batteries from ions moving through solids.
AboutAbout the lab
Transforming batteries with solids in which ions move.
The Hirayama Lab studies solid-state ionics materials used in lithium-ion batteries, all-solid-state batteries, and more.
Building on inorganic solid-state chemistry and electrochemistry, the lab advances the synthesis and functional exploration of solids in which ions move freely (ionic conductors).
The lab develops new materials and analyzes phenomena from two sides: searching for new substances, and controlling space from the atomic scale to the micrometer scale.
The lab aims to contribute to the realization of all-solid-state batteries, next-generation rechargeable batteries in which reactions proceed at solid-solid interfaces.
Key terms
- Solid-state ionics
- A field that deals with the phenomenon of ions moving through solids, and with materials that have this property
- All-solid-state battery
- A battery that uses a solid electrolyte instead of a flammable liquid electrolyte. It is expected to be a next-generation rechargeable battery
- Superionic conductor
- A substance in which ions move around as in a liquid, even though it is a solid
NewsLab news
A paper on conduction pathways in the cathode was selected for the cover of Batteries & Supercaps
A paper tracing the interface between the cathode and the electrolyte was accepted by Batteries & Supercaps
A student won a poster award at Materials Research Meeting 2025
A paper on surface control of cathodes for all-solid-state batteries was published in J. Power Sources
A master's student won a gold award at an international forum on energy and information
ResearchResearch themes
The lab's main subjects are solid-state ionics materials used in rechargeable batteries such as lithium-ion batteries and all-solid-state batteries. It searches for new substances, develops new materials based on multiscale spatial control, and analyzes the phenomena involved.
*Illustrative imageCreating New Energy Materials
Using the fundamental science of solid-state ionics as a guide, the lab searches for substances with unprecedented chemical compositions and crystal structures. It has discovered superionic conductors, in which ions move around as in a liquid; intercalation materials, which take in and release ions to convert them into electrical energy; phosphors; and more.
*Illustrative imageMaterials for Lithium-Ion Batteries
In lithium-ion batteries, reactions proceed at the interface between the electrode and the electrolyte, only a few nanometers thick, so the structure there and side reactions determine performance. The lab showed that modifying the electrode surface with a different material controls the structure of the film formed during charging and discharging, and improves input/output power and stability.
*Illustrative imageMaterials Development for All-Solid-State Batteries
In 2011, the lab discovered Li10GeP2S12, a superionic conductor in which lithium ions move as fast as in a liquid, and reported charge-discharge operation of an all-solid-state lithium battery. It is now developing compositions and structures from the nanometer to the micrometer scale to address the challenges of changes in shape over repeated use and stability in air.
*Illustrative imageWhat Happens at Battery Interfaces
Using thin-film synthesis, the lab creates model interfaces controlled at the atomic level, and has realized methods for directly observing the reaction sites of batteries with synchrotron X-ray surface diffraction, neutron reflectometry, and hard X-ray photoelectron spectroscopy. It found that in the early stage of battery reactions, the electrode surface changes into a structure different from that of the material's interior.
MembersFaculty
The Hirayama Lab consists of faculty members and doctoral and master's students.As of 2026
- ProfessorMasaaki HirayamaPublications ↗
- Assistant ProfessorKenta WatanabePublications ↗
VoicesStudent voices
Ratings and reviews reflect the experiences of individual current or former students, not the lab's official views. Whether a lab has reviews, or how many, says nothing about the lab itself.
Students who take part in an interview may receive a thank-you gift worth ¥1,000, regardless of what they say.
Student ratings (0 students)
--
--
--
--
--
--
Student voices answer questions like these
- What's great about this lab?
- What did you learn after joining?
- What's the vibe, and what is the professor like?
- Who is this lab for?
- Where do graduates go?
Your experience can help younger students choose their lab. Your name won't be shown.
Write a lab reviewAnonymous · Your draft is saved if you stopRelatedLabs similar to Hirayama Lab
Matsuda LabSchool of Materials and Chemical Technology, Department of Chemical Science and EngineeringElectrochemistry, energy storage and conversion, rechargeabl…
Tateyama LabSchool of Materials and Chemical Technology, Department of Chemical Science and EngineeringComputational materials science, surface and interface scien…
Nakamura LabSchool of Materials and Chemical Technology, Department of Chemical Science and EngineeringOrigin of life, electrochemistry, chemical energy conversion…
Arai LabSchool of Materials and Chemical Technology, Department of Chemical Science and EngineeringElectrochemistry, materials science, energy storage devices,…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “Coin-cells” Gerhard H Wrodnigg / CC BY-SA 2.5 (cropped)
- Creating New Energy Materials: “Proton conduction superionic ice” Goran tek-en / CC BY-SA 4.0 (cropped)
- Materials for Lithium-Ion Batteries: “Electrode Slurry Mixing” RudolfSimon / CC BY 3.0 (cropped)
- Materials Development for All-Solid-State Batteries: “Lithium-polymer battery ( )” Daniel van den Ouden / CC BY 2.0 (cropped)
- What Happens at Battery Interfaces: “ISIS' Target Station 2 - The Polref instrument in ISIS’ Target Station 2 takes centre stage, and the photographer captures some of the multitude of cables and pipes needed to operate the instrument. ( )” Science and Technology Facilities Council / CC BY-SA 2.0 (cropped)
- Related lab (松田研究室): “Robot arm handles an assay plate” National Institute of Allergy and Infectious Diseases / Public domain (cropped)
- Related lab (館山研究室): “Lithium-cobalt-oxide-3D-polyhedra” Ben Mills / Public domain (cropped)
- Related lab (中村研究室): “Chimney-hires” NOAA Vents Program / Public domain (cropped)
- Related lab (荒井研究室): “Lithium-ion coin cell batteries in laboratory testing fixture” Chingo K / CC BY 4.0 (cropped)
About LabLog
LabLog is a lab review app for students only. Student members at each university interview students in labs and publish what they say. Student voices can only be read by students who sign up with a university email address. Operated by bestiee Inc.
Learn more about LabLog ↗Search engines and AI may reference the basic lab info and rating summaries on this page and the description of LabLog. Student voices are for student members only. Automated collection by programs (scraping, or input to or training of AI) is prohibited under Article 8 of the Terms of Service. If you need data for research or analysis, please contact us.