文献类型：期刊文献

英文题名：Stable Seawater Electrolysis Over 10 000 H via Chemical Fixation of Sulfate on NiFeBa-LDH

作者：Chen, Haocheng[1,2];Liu, Pingying[3];Li, Wenbo[4];Xu, Wenwen[1,5];Wen, Yingjie[1];Zhang, Sixie[1];Yi, Li[1];Dai, Yeqi[1,5];Chen, Xu[1];Dai, Sheng[4];Tian, Ziqi[1,5];Chen, Liang[1,5];Lu, Zhiyi[1,5]

机构：[1]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Adv Fuel Cells & Electrolyzers Te, Ningbo 315201, Zhejiang, Peoples R China;[2]Zhejiang Univ Technol, Coll Mat Sci & Engn, Hangzhou 310032, Zhejiang, Peoples R China;[3]Jingdezhen Ceram Univ, Sch Mat Sci & Engn, Jingdezhen 333403, Jiangxi, Peoples R China;[4]East China Univ Sci & Technol, Inst Fine Chem,Joint Int Res Lab Precis Chem & Mol, Frontiers Sci Ctr Materiobiol & Dynam Chem,Sch Che, Feringa Nobel Prize Scientist Joint Res Ctr,Key La, Shanghai 200237, Peoples R China;[5]Univ Chinese Acad Sci, Beijing 100049, Peoples R China

年份：2024

卷号：36

期号：45

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20243817074059);WOS:【SCI-EXPANDED(收录号:WOS:001315158700001)】；

基金：H.C., P.L., and W.L. contributed equally to this work. This work was supported by the National Key Research and Development Project (Grant No. 2023YFB4005100), the Ningbo Yongjiang Talent Introduction Programme (No. 2021A-036-B), the Ningbo S&T Innovation 2025 Major Special Program (No. 2022Z205) and National Natural Science Foundation of China (No. 52201285). The DFT calculation was supported by the High-Performance Computing Center of Collaborative Innovation Center of Advanced Microstructures, Nanjing University.

语种：英文

外文关键词：alkaline seawater electrolysis; anti-Cl- corrosion; chemical fix SO42-; electrochemical H-2 production

摘要：Although hydrogen production through seawater electrolysis combined with offshore renewable energy can significantly reduce the cost, the corrosive anions in seawater strictly limit the commercialization of direct seawater electrolysis technology. Here, it is discovered that electrolytic anode can be uniformly protected in a seawater environment by constructing NiFeBa-LDH catalyst assisted with additional SO42- in the electrolyte. In experiments, the NiFeBa-LDH achieves unprecedented stability over 10 000 h at 400 mA cm(-2) in both alkaline saline electrolyte and alkaline seawater. Characterizations and simulations reveal that the atomically dispersed Ba2+ enables the chemical fixation of free SO42- on the surface, which generates a dense SO42- layer to repel Cl- along with the preferentially adsorbed SO42- in the presence of an applied electric field. In terms of the simplicity and effectiveness of catalyst design, it is confident that it can be a beacon for the commercialization of seawater electrolysis technology.