Prussian blue analogues-derived nitrogen-doped carboncoated FeO/CoO hollow nanocages as a high-performance anode material for Li storage

作     者：Chen Liu Shuang Yuan Yang Yang Xiao-Xi Zhao Xiao Duan Bin Cao Qiang Wang Chen Liu;Shuang Yuan;Yang Yang;Xiao-Xi Zhao;Xiao Duan;Bin Cao;Qiang Wang

作者机构：School of MetallurgyNortheastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education)Northeastern UniversityShenyang 110819China Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education)Northeastern UniversityShenyang 110819China Department of Design and EngineeringFaculty of Science and TechnologyBournemouth UniversityPooleDorset BH125BBUK 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2023年第42卷第12期

页      面：4070-4080页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (No.52274294) the Fundamental Research Funds for the Central Universities (No.N2124007-1) 

主　　题：Prussian blue analogue(PBA) Oxygen vacancy Hollow nanocage Nitrogen doping Lithium ion batteries(LIBs) 

摘      要：The design of electrode materials with specific structures is considered a promising approach for improving the performance of lithium-ion batteries(LIBs).In this paper,FeO/CoO hollow nanocages coated with a N-doped carbon layer(FCO@NC)was prepared using Fe-Co-based Prussian blue analogs(PBA)as a *** the synthesis,dopamine was the carbon and nitrogen *** reducing atmosphere was assured via NH_3/Ar,which regulated the vacancies in the structure of FCO@NC as well as increased its *** used as anode materials for LIBs,the FCO@NC nanocages deliver a high reversible capacity of 774.89 mAh·g^(-1)at 0.3 A·g^(-1)after200 cycles with a capacity retention rate of 80.4%and426.76 mAh·g^(-1)after 500 cycles at a high current density of 1 A·g^(-1).It is demonstrated that the hollow nanocage structure can effectively enhance the cycle stability,and the heat treatment in NH_(3)/Ar atmosphere contributes to the oxygen vacancy content of the electrode materials,further facilitating its conductivity and electrochemical performance.