Yoichiro Tsuji received his BS and MS degrees in industrial chemistry at Kyoto Univ. in Japan. In 1990, he started to work on Panasonic Crop., and since then has contributed to commercializing the world's first hybrid vehicle "Prius" battery and home fuel cell system "Ene Farm" through research on nickel-metal hydride storage batteries and solid polymer fuel cells. Since 2017 he has been engaged in research on solid oxide fuel cells at Graduate School of Human and Environmental Studies, Kyoto University for PhD. Currently, he is Director of Clean Energy Research Division at Panasonic Technology Innovation Headquarters, leading the research and development of new materials and devices for hydrogen and carbon free society.