Abstract: Novel Journal of Applied Sciences Research

Abstract:
Hydrogen is emerging as a green, renewable and zero-emission energy carrier. Seawater is emerging as renewable feed because of freshwater scarcity but it requires prior desalination. The energy intensive desalination can be avoided using direct sea water electrolysis. Direct sea water electrolysis poses various challenges of electrode cor rosion, poisoning and competitive side reactions. Most of these challenges are posed by the high concentration of chloride ions present in seawater. This review focuses on the challenges caused by the presence of chloride ions and other species on the direct seawater electrolysis. It also discusses the different strategies utilized to prevent chloride harmful effects. Finally, the future directions are discussed to give a roadmap for future research directions in this f ield.