Atomically dispersed Ni electrocatalyst for superior urea-assisted water splitting

作     者：Fang Luo Shuyuan Pan Yuhua Xie Chen Li Yingjie Yu Zehui Yang Fang Luo;Shuyuan Pan;Yuhua Xie;Chen Li;Yingjie Yu;Zehui Yang

作者机构：College of Materials Science and EngineeringState Key Laboratory of New Textile Materials&Advanced Processing TechnologyWuhan Textile UniversityWuhan 430200China Hubei Hydrogen Energy Technology Innovation CenterFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074HubeiChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第90卷第3期

页      面：1-6,I0002页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(No.22209126) 

主　　题：Urea oxidation reaction Hydrogen evolution reaction Nickel single atoms Water splitting 

摘      要：Urea oxidation reaction(UOR) has been selected as substitution for oxygen evolution reaction ascribing to its low thermodynamic voltage as well as utilization of nickel as ***,we report the formation of nickel single atoms(Ni-SAs) as exceptional bifunctional electrocatalyst toward UOR and hydrogen evolution reaction(HER) in urea-assisted water *** UOR catalysis,Ni-SAs perform a superior catalytic performance than Ni-NP/NC and Pt/C ascribing to the formation of HOO-Ni-N_(4) structure evidenced by in-situ Raman spectroscopy,corresponding to a boosted mass activity by 175-fold at 1.4 V *** than Ni-NP/***,Ni-SAs requires only 450 mV overpotential to obtain HER current density of 500 mA cm^(-2).136 mA cm^(-2) is achieved in urea-assisted water splitting at1.7 V for Ni-SAs,boosted by 5.7 times than Pt/C-IrO_(2) driven water splitting.