Abstract
Highlights
Rational design of chlorine-suppressing catalysts based on mechanistic insights.
Overview of recent advances in cutting-edge seawater electrolysis systems.
Discussion of challenges and potential directions for direct seawater electrolysis enhancement.
Seawater electrolysis offers a promising pathway to generate green hydrogen, which is crucial for the net-zero emission targets. Indirect seawater electrolysis is severely limited by high energy demands and system complexity, while the direct seawater electrolysis bypasses pre-treatment, offering a simpler and more cost-effective solution. However, the chlorine evolution reaction and impurities in the seawater lead to severe corrosion and hinder electrolysis’s efficiency. Herein, we review recent advances in the rational design of chlorine-suppressive catalysts and integrated electrolysis systems architectures for chloride-induced corrosion, with simultaneous enhancement of Faradaic efficiency and reduction of electrolysis’s cost. Furthermore, promising directions are proposed for durable and efficient seawater electrolysis systems. This review provides perspectives for seawater electrolysis toward sustainable energy conversion and environmental protection.
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Details
1 China University of Petroleum (East China), State Key Laboratory of Heavy Oil Processing, College of New Energy, Qingdao, People’s Republic of China (GRID:grid.497420.c) (ISNI:0000 0004 1798 1132)
2 Peking University, Beijing National Laboratory for Molecular Sciences, New Cornerstone Science Laboratory, College of Chemistry and Molecular Engineering, Beijing, People’s Republic of China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319)
3 East China University of Science and Technology, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, Shanghai, People’s Republic of China (GRID:grid.28056.39) (ISNI:0000 0001 2163 4895)