Dynamic in situ reconstruction of NiSe2 promoted by interfacial Ce2（CO3）2O for enhanced water oxidation

作     者：Fengli Wei Jinghao Shen Jiayin Xie Zuyang Luo Luyan Shi Tayirjan Taylor Isimjan Xiulin Yang Jieshan Qiu Bin Wu 

作者机构：Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Saudi Arabia Basic Industries Corporation (SABIC) at King Abdullah University of Science and Technology (KAUST) State Key Laboratory of Chemical Resource Engineering State Key Laboratory of Organic-Inorganic Composites College of Chemical Engineering Beijing University of Chemical Technology Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Institute of Physics Humboldt University Berlin 

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

年 卷 期：2024年第11期

页      面：472-480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）] 

基　　金：financially supported by the National Natural Science Foundation of China (52363028, 21965005) the Volkswagen Foundation (Freigeist Fellowship 89592) the Natural Science Foundation of Guangxi Province (2021GXNSFAA076001) the Guangxi Technology Base and Talent Subject (GUIKE AD23023004, GUIKE AD20297039) Innovation Project of Guangxi Graduate Education (Nos. YCSW2024219, YCBZ2024082) 

摘      要：Understanding and manipulating the structural evolution of water oxidation electrocatalysts lays the foundation to finetune their catalytic ***,we present a synthesis of NiSe2-Ce2（CO3）2O heterostructure and demonstrate the efficacy of interfacial Ce2（CO3）2O in promoting the formation of catalytically active centers to improve oxygen evolution ***-situ Raman spectroscopy shows that incorporation of Ce2（CO3）2O into NiSe2causes a cathodic shift of the Ni2+→Ni3+transition *** electrochemical impedance spectroscopy reveals that strong electronic coupling at heterogeneous interface accelerates charge transfer ***,density functional theory calculations suggest that actual catalytic active species of NiOOH transformed from NiSe2,which is coupled with Ce2（CO3）2O,can optimize electronic structure and decrease the free energy barriers toward fast oxygen evolution reaction（OER） ***,the resultant NiSe2-Ce2（CO3）2O electrode exhibits remarkable electrocatalytic performance with low overpotentials(268/304 mV@50/100 mA cm-2) and excellent stability(50 mA cm-2for 120 h) in the alkaline *** work emphasizes the significance of modulating the dynamic changes in developing efficient electrocatalyst.