Electrocatalytic water splitting is an important method to produce green and renewable hydrogen (H-2). One of the hindrances for wide applications of electrocatalysis in H-2 pro-duction is the lack of freshwater resources. Comparatively, seawater splitting has become an effective approach for large-scale H-2 production due to its abundant reserves. However, the increased complexity of seawater content emerged more problems in electrocatalytic seawater splitting. Recently, various strategies have been reported on improving the performance of electrocatalysts applied in seawater. Herein, this review firstly analyzed the mechanisms and challenges of electrocatalytic seawater splitting to evolve H-2, and sum-marized the recent progress on H-2 production in electrocatalytic seawater splitting. Furthermore, suggestions for future work have been provided for guidance. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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