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Advances in Corrosion-Resistant Metal-Based Oxide Electrocatalysts for Seawater Electrolysis: Focus on Chlorine
Obeylaw Moyo1, Jiqiang Ding1,2, Jiaqiao Yang1
1School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China.
Abstract:
Electrocatalytic seawater splitting offers a promising route for sustainable hydrogen production but faces persistent challenges from chloride-induced corrosion. This review highlights the strategy of anion passivation layers to mitigate chloride-induced corrosion at the anodic oxygen evolution reaction (OER), detailing their mechanisms and roles in protecting catalysts against chloride ion attack. To provide a comprehensive perspective, complementary strategies, including heterostructure configuration, physical barriers, decoupled seawater splitting, and in situ phase transitions, are briefly introduced. Collectively, these strategies advance the design of durable and efficient electrocatalysts, accelerating the practical realization of seawater-based hydrogen generation.
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