Interface construction of NiCo LDH/NiCoS based on the 2D ultrathin nanosheet towards oxygen evolution reaction

作     者：Jiahui Li Lili Wang Haojia He Yiquan Chen Zirui Gao Na Ma Bing Wang Linlin Zheng Rulin Li Yujia Wei Junqing Xu Yao Xu Bowen Cheng Zhen Yin Ding Ma Jiahui Li;Lili Wang;Haojia He;Yiquan Chen;Zirui Gao;Na Ma;Bing Wang;Linlin Zheng;Rulin Li;Yujia Wei;Junqing Xu;Yao Xu;Bowen Cheng;Zhen Yin;Ding Ma

作者机构：State Key Laboratory of Separation Membranes and Membrane ProcessesSchool of ChemistryTiangong UniversityTianjin 300387China School of Chemical Engineering and TechnologyTiangong UniversityTianjin 300387China Beijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular Engineering and College of Engineeringand BIC-ESATPeking UniversityBeijing 100871China College of Chemical Engineering and Materials ScienceTianjin University of Science and TechnologyTianjin 300457China China Tianchen Engineering CorporationTianjin 300400China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第6期

页      面：4986-4995页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supports from the National Natural Science Foundation of China(Nos.51908408 and 21872104) the Natural Science Foundation of Tianjin for Distinguished Young Scholar(No.20JCJQJC00150) Innovative Research Team of Tianjin Municipal Education Commission(No.TD13-5008) D.M.acknowledges the support from the Tencent Foundation through the XPLORER PRIZE 

主　　题：oxygen evolution reaction hybrid structure ultrathin nanosheet layered double hydroxide surface sulfidation interface of NiCo LDH/NiCoS 

摘      要：Carbon-free hydrogen as a promising clean energy source can be produced with electrocatalysts via water *** evolution reaction(OER)as anodic reaction determines the overall efficiency of water electrolysis due to sluggish OER ***,it’s much desirable to explore the efficient and earth-abundant transition-metal-based OER electrocatalysts with high current density and superior stability for industrial alkaline ***,we demonstrate a significant enhancement of OER kinetics with the hybrid electrocatalyst arrays in alkaline via judiciously combining earth-abundant and ultrathin NiCo-based layered double hydroxide(NiCo LDH)nanosheets with nickel cobalt sulfides(NiCoS)with a facile metal-organic framework(MOF)-template-involved surface sulfidation *** obtained NiCo LDH/NiCoS hybrid arrays exhibits an extremely low OER overpotential of 308 mV at 100 mA·cm^(−2),378 mV at 200 mA·cm^(−2)and 472 mV at 400 mA·cm^(−2)in 1 M KOH solution,respectively.A much low Tafel slope of 48 mV·dec^(−1)can be ***,with the current density from 50 to 250 mA·cm^(−2),the NiCo-LDH/NiCoS hybrid arrays can run for 25 h without any *** results demonstrate that the construction of hybrid arrays with abundant interfaces of NiCo LDH/NiCoS can facilitate OER kinetics via possible modulation of binding energy of O-containing intermediates in alkaline *** present work would pave the way for the development of lowcost and efficient OER catalysts and industrial application of water alkaline electrolyzers.