Affiliation:
1. Frontier Research Center Songshan Lake Materials Laboratory Dongguan 523808 P. R. China
2. Clean Energy Cluster International Iberian Nanotechnology Laboratory (INL) Avenida Mestre Jose Veiga Braga 4715‐330 Portugal
Abstract
AbstractSeawater electrolysis (SWE) is a promising and potentially cost‐effective approach to hydrogen production, considering that seawater is vastly abundant and SWE is able to combine with offshore renewables producing green hydrogen. However, SWE has long been suffering from technical challenges including the high energy demand and interference of chlorine chemistry, leading electrolyzers to a low efficiency and short lifespan. In this context, hybrid SWE, operated by replacing the energy‐demanding oxygen evolution reaction and interfering chlorine evolution reaction (CER) with a thermodynamically more favorable anodic oxidation reaction (AOR) or by designing innovative electrolyzer cells, has recently emerged as a better alternative, which not only allows SWE to occur in a safe and energy‐saving manner without the notorious CER, but also enables co‐production of value‐added chemicals or elimination of environmental pollutants. This review provides a first account of recent advances in hybrid SWE for hydrogen production. The substitutional AOR of various small molecules or redox mediators, in couple with hydrogen evolution from seawater, is comprehensively summarized. Moreover, how the electrolyzer cell design helps in hybrid SWE is briefly discussed. Last, the current challenges and future outlook about the development of the hybrid SWE technology are outlined.
Funder
Songshan Lake Materials Laboratory
Agência Nacional de Inovação
Ministry of Science and Technology of the People's Republic of China
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
1 articles.
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