This is an international symposium for devices and systems of fuel cells and batteries and for energy storages and carriers. Prof. Amornchai Arpornwichanop from Chulalongkorn University in Thailand, who has been awarded "The SCEJ Award for Outstanding Asian Researcher and Engineer 2019", is invited to give a plenary lecture for this symposium. Furthermore, it is great to have excellent researchers who study this electrochemical energy systems, energy storages and carriers. We are sure this symposium will be a valuable occasion for various researchers in this research filed. This symposium is closely related to the symposium "Recent Progress in Energy Conversion and Storage - Nanomaterials Synthesis-".