Energy Lab is an open-access journal that covers all disciplines related to energy, publishing cutting-edge scientific and technological achievements in the field of energy science and engineering. We would like to build up a premium journal delivering cutting-edge progress and raising the bars of discussions, evaluations and analyses in Energy Science and Engineering. Energy Lab aims to disseminate the creative concepts, challenging issues, innovative applications and critical perspective of energy systems.Topics include, but are not limited to, fuel cells, hydrogen energy, secondary batteries, supercapacitors, solar cells, artificial photosynthesis, carbon dioxide conversion technologies, thermoelectric materials, and photothermal materials.