The Nano Energy Materials Lab aims to improve the performance of basic materials such as electrode active materials, separators, and current collectors of energy storage devices based on nano technology. We are conducting research to improve the performance of commercial lithium-ion secondary batteries and next-generation secondary batteries by exploring the characteristic reaction mechanisms of materials that occur in the nanometer range and applying them. We conduct research to develop a next-generation battery system that combines nanometer-level precision structure control using multiple chemical reactions and various electrochemical reactions.