Abstract: The current industrial production of hydrogen basically comes from fossil energy. Under the background of carbon emissions peak, the utilization of hydrogen energy has to be greener and more convenient .The production of hydrogen from abundant seawater resources seems to be a promising way. This paper reviews the research and development status of hydrogen production from seawater in China and abroad in recent years, and summarizes the overall research progress of hydrogen production by direct electrolysis and photolysis of seawater respectively. Then, it introduces the industry development status of hydrogen production from desalinated seawater. Finally, the future development of hydrogen production from seawater is prospected. It is discovered that great challenges exist since direct hydrogen production of seawater is still in R&D and test stage. The hydrogen production from desalinated seawater need to resolve problems in complex process through industrial demonstration. The future of hydrogen production from seawater is based on hydrogen demand, electricity cost and technical feasibility. Under certain circumstances, hydrogen production from seawater may usher in development opportunities.

Key words: Seawater, Hydrogen Production, Electrolysis, Photolysis