Researchers from the Qingdao Institute of Bioenergy and Bioprocess Technology have developed a cobalt-based electrocatalyst, Co-N/S-HCS, with enhanced chloride resistance for seawater electrolysis, a process essential for sustainable hydrogen production. This catalyst, featuring a unique CoN3S1 structure, is engineered to minimize corrosion by reducing chloride ion adsorption, thereby boosting stability and efficiency. When integrated into a self-powered seawater-splitting system, Co-N/S-HCS achieved impressive results: seawater-based Zn-air batteries maintained stability for 650 hours, while electrolysis devices sustained over 1,100 hours of operation, achieving a hydrogen production rate of 469 µmol/h, more than double previous rates. The catalyst’s durability suggests its potential in broader applications, such as desalination and energy storage, advancing sustainable hydrogen solutions for water-scarce regions.
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