Scholarlink

<p>Saline water electrolysis presents a promising pathway for green hydrogen production by leveraging abundant saline water resources instead of scarce freshwater. However, the presence of highly corrosive chloride ions (Cl<sup>−</sup>) severely undermines anode durability. This instability arises from two main issues: (i) penetration of Cl<sup>−</sup> through catalyst layers to the underlying substrate and (ii) degradation of active catalytic sites due to Cl<sup>−</sup> attack. To tackle both issues simultaneously, we introduce ruthenium (Ru) ions as a dual-function stabilizing agent in NiFe-based anodes. Our results show that Ru incorporation promotes the formation of a protective surface layer enriched with Ru atoms, along with a denser NiFeOOH catalyst structure, which collectively inhibit Cl<sup>–</sup> infiltration. Moreover, atomically dispersed ruthenium (Ru<sub>SA</sub>) within the NiFeOOH matrix effectively mitigates Cl<sup>–</sup>-induced corrosion of active sites. Thanks to this dual stabilization effect, the resulting Ru<sub>SA</sub>-NiFeOOH/Ni anode exhibits exceptional operational stability—over 2000&#xa0;h at an industrial current density of 0.5&#xa0;A&#xa0;cm<sup>−2</sup> in a chloride-enriched alkaline medium (1&#xa0;M KOH + 2&#xa0;M NaCl)—setting a new benchmark for performance under such aggressive conditions. This study establishes a robust dual stabilization strategy that significantly enhances anode stability in saline water electrolysis.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Unlocking Superior Stability in High-Salinity Oxygen Evolution Reaction: A Ru Stabilized NiFeOOH/Ni Anode with over 2000 h Durability

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月26日

查看全文
  • Jin He,
  • Haoyun Sheng,
  • Yichao Lin,
  • Bingqi Gong,
  • Yayun Zhao,
  • Ziqi Tian,
  • Liang Chen

摘要

Saline water electrolysis presents a promising pathway for green hydrogen production by leveraging abundant saline water resources instead of scarce freshwater. However, the presence of highly corrosive chloride ions (Cl−) severely undermines anode durability. This instability arises from two main issues: (i) penetration of Cl− through catalyst layers to the underlying substrate and (ii) degradation of active catalytic sites due to Cl− attack. To tackle both issues simultaneously, we introduce ruthenium (Ru) ions as a dual-function stabilizing agent in NiFe-based anodes. Our results show that Ru incorporation promotes the formation of a protective surface layer enriched with Ru atoms, along with a denser NiFeOOH catalyst structure, which collectively inhibit Cl– infiltration. Moreover, atomically dispersed ruthenium (RuSA) within the NiFeOOH matrix effectively mitigates Cl–-induced corrosion of active sites. Thanks to this dual stabilization effect, the resulting RuSA-NiFeOOH/Ni anode exhibits exceptional operational stability—over 2000 h at an industrial current density of 0.5 A cm−2 in a chloride-enriched alkaline medium (1 M KOH + 2 M NaCl)—setting a new benchmark for performance under such aggressive conditions. This study establishes a robust dual stabilization strategy that significantly enhances anode stability in saline water electrolysis.