文献类型：期刊文献

英文题名：Ag Nanoparticle-Induced Surface Chloride Immobilization Strategy Enables Stable Seawater Electrolysis

作者：Xu, Wenwen[1];Wang, Zhongfeng[1,2];Liu, Pingying[3];Tang, Xuan[4];Zhang, Sixie[1,2];Chen, Haocheng[1,2];Yang, Qihao[1];Chen, Xu[1];Tian, Ziqi[1,2];Dai, Sheng[4];Chen, Liang[1,2];Lu, Zhiyi[1,2]

机构：[1]Chinese Acad Sci, Qianwan Inst CNITECH, Ningbo Inst Mat Technol & Engn, Key Lab Adv Fuel Cells & Electrolyzers Technol Zhe, Ningbo 315201, Zhejiang, Peoples R China;[2]Univ Chinese Acad Sci, Coll Mat Sci & Opto Elect Technol, Beijing 100049, Peoples R China;[3]Jingdezhen Ceram Univ, Sch Mat Sci & Engn, Jingdezhen 333403, Jiangxi, Peoples R China;[4]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn,Key Lab Adv Mat & Joint Int Re, Shanghai 200237, Peoples R China

年份：2024

卷号：36

期号：2

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20234815139732);WOS:【SCI-EXPANDED(收录号:WOS:001111179800001)】；

基金：W.X. and Z.W. contributed equally to this work. This work was supported by Bellwethers Project of Zhejiang Research and Development Plan (No. 2022C01158), Ningbo Yongjiang Talent Introduction Programme (No. 2021A-036-B), the Ningbo S&T Innovation 2025 Major Special Program (Nos. 2020Z107 and 2022Z205), the National Science Foundation of Ningbo (No. 2022J296), and the National Natural Science Foundation of China (NSFC; Nos. 22105214, 52201285, and 22379154). The DFT calculation was supported by the High-Performance Computing Center of Collaborative Innovation Center of Advanced Microstructures, Nanjing University. The authors thanked Prof. Cheng Lian for the contrubution to MD simulation and EDL analysis.

语种：英文

外文关键词：alkaline seawater electrolysis; anti-Cl- corrosion; electrochemical H-2 production

摘要：Although hydrogen gas (H-2) storage might enable offshore renewable energy to be stored at scale, the commercialization of technology for H-2 generation by seawater electrolysis depends upon the development of methods that avoid the severe corrosion of anodes by chloride (Cl-) ions. Here, it is revealed that the stability of an anode used for seawater splitting can be increased by more than an order of magnitude by loading Ag nanoparticles on the catalyst surface. In experiments, an optimized NiFe-layered double hydroxide (LDH)@Ag electrode displays stable operation at 400 mA cm(-2) in alkaline saline electrolyte and seawater for over 5000 and 2500 h, respectively. The impressive long-term durability is more than 20 times that of an unmodified NiFe-LDH anode. Meticulous characterization and simulation reveals that in the presence of an applied electric field, free Cl- ions react with oxidized Ag nanoparticles to form stable AgCl species, giving rise to the formation of a Cl--free layer near the anode surface. Because of its simplicity and effectiveness, it is anticipated that the proposed strategy to immobilize chloride ions on the surface of an anode has the potential to become a crucial technology to control corrosion during large-scale electrolysis of seawater to produce hydrogen.