近日，石河子大学于锋团队报道了面向绿色海水电解的耐氯腐蚀高性能析氧反应电催化剂。该研究于2026年10月26日发表在《中国科学：化学》杂志上。

海水直接电解是低成本绿色制氢的可持续途径，但该技术受氯离子引发的竞争吸附与阳极腐蚀问题严重制约。

研究组以工业副产物四氯化硅（SiCl₄）为原料，通过快速刻蚀工艺成功制备具有球形 “铠甲” 结构的 Si-NiFeOOH/NF 高效阳极催化剂。硅掺杂可优化电子结构，提升析氧反应（OER）活性；同时原位构筑的物理屏障能够有效抑制氯离子腐蚀。电化学测试结果表明：在模拟海水 / 天然海水中，Si-NiFeOOH/NF 在电流密度10 mA cm^-2与100 mA cm^-2下的过电位分别仅为 245 mV/231 mV、299 mV/307 mV，且稳定性优异（100 mA cm^-2下稳定运行 > 160 h）。

在淡水 / 海水两电极体系中，达到100 mA cm^-2仅需1.76 V/1.84 V，长效稳定性超过 140 h。更重要的是，阴离子交换膜电解水体系（AEMWE）测试验证了该催化剂具备实际应用潜力（1000 mA cm^-2下稳定运行 > 50 h）。机理研究表明，硅掺杂降低了决速步（RDS）能垒，并抑制氯离子吸附与腐蚀，同步提升催化剂的析氧活性与抗氯腐蚀能力。该研究为海水体系下析氧电催化剂的抗腐蚀设计与规模化应用提供了技术支撑。

附：英文原文

Title: Chlorine-corrosion-resistant high-performance oxygen evolution reaction electrocatalysts enabling green seawater electrolysis

Author: Yang, Weixia, Xie, Baohong, Feng, Chao, Sun, Yaxin, Xie, Jing, Pu, Jingwen, Zhu, Hongying, Chen, Xueru, Yu, Feng

Issue&Volume: 2026-10-26

Abstract: Direct electrolysis of seawater offers a sustainable route for low-cost green hydrogen production. But this solution is severely hindered by Cl-induced competitive adsorption and anode corrosion issues. Herein, using the industrial by-product SiCl4, successfully prepared a spherical “armor”-structured Si-NiFeOOH/NF via a rapid etching technique as an efficient anode catalyst. Si doping optimizes the electronic structure for enhanced oxygen evolution reaction (OER) activity, while the in-situ-formed physical barrier effectively suppresses Cl corrosion. The electrochemical test results show that in the simulated seawater/seawater, the overpotential of Si-NiFeOOH/NF at 10 and 100 mA cm2 is only 245 mV/231 mV and 299 mV/307 mV respectively, and it exhibits excellent stability (>160 h at 100 mA cm2). Meanwhile, in the two-electrode freshwater/seawater system, reach 100 mA cm2 is only 1.76 V/1.84 V, and the durability exceeds 140 h. More importantly, anion exchange membrane water electrolysis system (AEMWE) test results confirmed the practical application feasibility (stable >50 h at 1000 mA cm2). Mechanistic studies reveal that Si doping lowers the rate-determining step (RDS) energy barrier and suppresses Cl adsorption/corrosion, thereby enhancing both OER activity and chlorine corrosion resistance. This study provides technical support for the anti-corrosion design and scale-up application of OER electrocatalysts in seawater media.

DOI: 10.1007/s11426-026-3952-1

Source:https://link.springer.com/article/10.1007/s11426-026-3952-1