Solid State Battery Ionics Group
Members
Naoaki KUWATA
SAMURAI
Group Leader, Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Calpa Marcela
SAMURAI
Researcher, Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Nobuo TAJIMA
NIMS Special Researcher,Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Gen HASEGAWA
SAMURAI
NIMS Postdoctoral Researcher,Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Prince SHARMA
JSPS Postdoctoral Fellowships for Research in Japan,Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Sihao XING
NIMS Junior Researcher (Hokkaido University (NIMS Joint Graduate School)),Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Aprilia VIANTI
Technical Staff,Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Kaori SUGII
Technical Staff,Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Mika ABE
Technical Staff,Solid State Battery Ionics Group, Battery and Cell Materials Field, Research Center for Energy and Environmental Materials (GREEN)
Motivation and Outline
The Solid-State Battery Ionics Group aims to develop safe and long-lasting solid-state batteries that contribute to achieving carbon neutrality by 2050. To this end, we investigate the mechanisms of ion transport inside solid electrolytes and across their interfaces, working to establish design principles grounded in fundamental science. In addition, we employ unique experimental approaches—such as NMR, TOF-SIMS, and operando analyses—to visualize ion dynamics, thereby driving the development of next-generation solid-state battery materials.
Time and spatial scales of lithium diffusion in solid-state batteries
Isotope diffusion and operando XRD analysis of battery materials
Facilities
For the analysis of ion transport behavior, we are equipped with nuclear magnetic resonance (NMR), time-of-flight secondary ion mass spectrometry (TOF-SIMS), and impedance spectroscopy instruments. In addition, we have facilities for solid-state battery fabrication, including a pulsed laser deposition (PLD) system, glove boxes, and charge–discharge testing equipment.
Research Results
- Enabling Observation of Fast-Moving Lithium Ions within Solid-State Batteries【NIMS NOW, 2024, 24 (1), 2024/3/7】
- Challenge to improve battery performance in a state-of-the-art environment【NIMS NOW, 2024, 24 (1), 2024/3/7】
- Imaging Grain Boundaries that Impede Lithium-Ion Migration in Solid-State Batteries —New technique developed to quantify ionic conductivity across grain boundaries—
- Hidden Cause of Lithium-Rich Cathode Materials’ Low Energy Efficiency Revealed —Asymmetric Reaction Pathways Are Key—
