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<p>The teams of Lu and Tian reported a halide ion modification strategy that endows a Pt cathode with strong anti-scaling capability while sustaining an efficient hydrogen evolution reaction during direct seawater electrolysis. The surface-bound halide ligand optimizes *H adsorption on adjacent Pt sites to boost Heyrovsky step and repels interfacial OH<sup>−</sup> to shift the local pH maximum into the bulk electrolyte. These combined effects drive continuous hydrogen generation and high-purity Mg(OH)<sub>2</sub> precipitation without observable decay in a long-term stability measurement at 100 mA cm<sup>−2</sup> in direct seawater electrolysis.</p>

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Charge-engineered Pt for sustained hydrogen generation and high-purity Mg(OH)2 co-production in direct seawater electrolysis

  • 期刊论文

  • 发表日期：

    2026年4月5日

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  • Huxiao Wang,
  • Tianyi Kou

摘要

The teams of Lu and Tian reported a halide ion modification strategy that endows a Pt cathode with strong anti-scaling capability while sustaining an efficient hydrogen evolution reaction during direct seawater electrolysis. The surface-bound halide ligand optimizes *H adsorption on adjacent Pt sites to boost Heyrovsky step and repels interfacial OH− to shift the local pH maximum into the bulk electrolyte. These combined effects drive continuous hydrogen generation and high-purity Mg(OH)2 precipitation without observable decay in a long-term stability measurement at 100 mA cm−2 in direct seawater electrolysis.