Head of Research and Development
Yoshiharu UCHIMOTO
Professor
Summary of Research and Development
In order to implement storage batteries in society, it is necessary toanalyze hierarchical reactions over a wide range of space and time and optimize battery structures, including composite electrode structures.
In particular, large actual batteries exhibit heterogeneous phenomena such as reaction distribution and temperature distribution, which greatly affect battery safety and degradation characteristics.Since rechargeable batteries have a sealed structure and are difficult to visualize, new advanced analytical techniques that enable “operando”observation under battery operating conditions are required to elucidate such non-uniform phenomena. These phenomena occur in non-equilibrium states, making “operando” measurements using synchrotron radiation with high temporal resolution an effective analytical tool.
By utilizing the high material penetration ability and high temporal and spatial resolution of high-energy synchrotron radiation X-rays, we will develop tools to directly observe reactions under battery operating conditions and elucidate heterogeneous mechanisms.
By combining multiple synchrotron radiation analyses such as X-ray absorption, diffraction, scattering, and imaging analysis, we will understand these heterogeneous phenomena and contribute to the development of various protocols.