文献类型：期刊文献

英文题名：Self-constructed dynamic hydroxyl multi-level chloride-resistant catalytic interfaces of NiFeCoAlSm for industrial-grade overall seawater splitting

作者：Gao, Guojie[1];Li, Jialuo[1];Liu, Taolue[1];Wei, Yu[1];Guo, Mingxia[1];Xu, Hanwen[1];Wang, Fengguang[1];Liu, Jinxuan[1];Xu, Jilin[2];Gao, Yan[1]

机构：[1]Dalian Univ Technol, Frontiers Sci Ctr Smart Mat Oriented Chem Engn, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Liaoning, Peoples R China;[2]Guangdong Ocean Univ, Sch Mat Sci & Engn, Yangjiang 529500, Guangdong, Peoples R China

年份：2027

卷号：726

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001870208500001)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (22278055) and the Fundamental Research Funds for China Central Universities (DUT22LAB608) .

语种：英文

外文关键词：High-entropy alloy; Bifunctional catalyst; Overall seawater splitting; Chloride-resistant interface; High current density

外文摘要：Driven by the practical demand for industrial-scale alkaline seawater electrolysis, chloride-induced corrosion and insufficient stability at high current densities remain critical challenges. Herein, a quinary NiFeCoAlSm highentropy alloy (HEA) was synthesized by electrodeposition, followed by selective anodic dealuminization for 60 min to obtain a chloride-resistant bifunctional HEA electrocatalyst. The partial dealuminization process regulates the electronic structure and induces a dynamic hydroxyl-rich interface. Density functional theory (DFT) calculations reveal optimized OH- adsorption and suppressed Cl- adsorption on the reconstructed surface. Sm further strengthens the metal-hydroxyl (M-OH) structure and stabilizes the catalytic interface. In alkaline seawater, the catalyst delivers an oxygen evolution reaction (OER) overpotential of 356 mV at 500 mA cm- 2 and operates stably for over 1000 h, while achieving stable hydrogen evolution reaction (HER) performance at 1000 mA cm- 2 for over 100 h. Anion exchange membrane water electrolyzer (AEMWE) for seawater electrolysis assembled with this electrode reaches 500 mA cm- 2 at 2.06 V with long-term durability. This work provides a strategy for developing efficient and corrosion-resistant catalysts for industrial-scale seawater electrolysis.