Formate‐Anion‐Induced Water Network Reshaping Enables Concurrent Hydrogen and Magnesium Hydroxide Production From Seawater

at just 435 mV in alkaline seawater while maintaining exceptional stability over 1000 h and can be deployed in anion exchange membrane (AEM) electrolyzers with the technical and economic analysis (TEA) indicating the low cost of hydrogen production. Furthermore, this study confirms the technical feasibility of the simultaneous electrosynthesis of high-value magnesium hydroxide and hydrogen from natural seawater.