Prof. Dr. Hirofumi Yoshikawa

Prof. Dr. Hirofumi Yoshikawa focuses on the development of advanced materials for next-generation energy storage systems, particularly rechargeable batteries and capacitors. His research centers on redox-active molecular materials, especially polynuclear metal complex clusters (“molecular clusters”), which can undergo multi-electron redox reactions and serve as high-performance cathode materials in lithium batteries.

By integrating these molecular clusters with nanocarbon materials—such as single-walled carbon nanotubes, graphene, and mesoporous carbon—his group develops nano-hybrid electrode materials that significantly improve battery performance. These hybrids combine the redox activity of molecular clusters with the electrical double-layer capacitance of nanocarbons, resulting in higher capacity, faster charge/discharge rates, and improved power density compared with conventional cathode materials.

Overall, Prof. Yoshikawa’s work aims to advance both the fundamental understanding and practical development of innovative energy storage materials to support future sustainable energy systems.

Learn more about Prof. Dr. Prof. Dr. Hirofumi Yoshikawa.External link