Vacancies and interfaces engineering of core-shell heterostuctured NiCoP/NiO as trifunctional electrocatalysts for overall water splitting and zinc-air batteries

作     者：Xiaolin Hu Jichuan Fan Ronghua Wang Meng Li Shikuan Sun Chaohe Xu Fusheng Pan Xiaolin Hu;Jichuan Fan;Ronghua Wang;Meng Li;Shikuan Sun;Chaohe Xu;Fusheng Pan

作者机构：College of Aerospace EngineeringChongqing UniversityChongqing 400044PR China College of Materials Science and EngineeringChongqing UniversityChongqing 400044PR China MOE Key Laboratory of Low-grade Energy Utilization Technologies and SystemsCQU-NUS Renewable Energy Materials&Devices Joint LaboratorySchool of Energy&Power EngineeringChongqing UniversityChongqing400044PR China School of Materials Science and Energy EngineeringFoshan UniversityFoshan528000PR China National Engineering Research Center for Magnesium AlloysChongqing UniversityChongqing400044PR China 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2023年第8卷第2期

页      面：601-611页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.22179014,21603019) program for the Hundred Talents Program of Chongqing University 

主　　题：DFT calculations Interface catalysis Heterostructures Overall water splitting Zn–air batteries 

摘      要：The electronic structures and properties of electrocatalysts,which depend on the physicochemical structure and metallic element components,could significantly affect their electrocatalytic performance and their future applications in Zn-air battery(ZAB)and overall water splitting(OWS).Here,by combining vacancies and heterogeneous interfacial engineering,three-dimensional(3D)core-shell NiCoP/NiO heterostructures with dominated oxygen vacancies have been controllably in-situ grown on carbon cloth for using as highly efficient electrocatalysts toward hydrogen and oxygen electrochemical *** calculation and electrochemical results manifest that the hybridization of NiCoP core with NiO shell produces a strong synergistic electronic coupling *** oxygen vacancy can enable the emergence of new electronic states within the band gap,crossing the Fermi levels of the two spin components and optimizing the local electronic ***,the hierarchical core-shell NiCoP/NiO nanoarrays also endow the catalysts with multiple exposed active sites,faster mass transfer behavior,optimized electronic strutures and improved electrochemical performance during ZAB and OWS applications.