The realization of a sustainable society requires the effective use of renewable energy and a transition away from the large-scale consumption of fossil fuels. This demands highly efficient energy and material conversion, as well as the development of high-energy-density storage systems. Our laboratory conducts research at the interface of inorganic solid-state chemistry and electrochemistry, focusing on the development of advanced ionics materials, including intercalation electrodes, catalytic electrodes, and solid electrolytes. We take an integrated approach that spans from understanding the fundamental mechanisms of material properties and functionalities to their applications in electrochemical devices. Our long-term goal is to create next-generation technologies for energy storage and energy/chemical conversion based on new operating principles. In collaboration with Professor Kofu, we also employ quasielastic and inelastic neutron scattering techniques to explore collective ion motion and the many-body effects governing fast ion diffusion in solids.