This book describes important findings in intensive studies conducted in Japan on ammonia as an energy carrier. It illustrates an advanced solar-heat capture system and storage materials at 600°C and hydrogen production with SOECs and a new IS method through the use of heat. New industrial ammonia catalysts and a demonstration process that started running in Fukushima are also introduced. Advanced ammonia decomposition catalysts and the process that were developed for use by the hydrogen station are presented. An advanced direct ammonia fuel cell was developed and the base data are shown....