Facile construction of a multilayered interface for a durable lithium‐rich cathode

作     者：Zhou Xu Yifei Yuan Qing Tang Xiangkun Nie Jianwei Li Qing Sun Naixuan Ci Zhenjie Xi Guifang Han Lijie Ci Guanghui Min Zhou Xu;Yifei Yuan;Qing Tang;Xiangkun Nie;Jianwei Li;Qing Sun;Naixuan Ci;Zhenjie Xi;Guifang Han;Lijie Ci;Guanghui Min

作者机构：Key Laboratory for Liquid–Solid Structural Evolution&Processing of Materials(Ministry of Education)Research Center for Carbon NanomaterialsSchool of Materials Science and EngineeringShandong UniversityJinanChina College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouChina School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)ShenzhenChina 

出 版 物：《Carbon Energy》 (碳能源（英文）)

年 卷 期：2023年第5卷第9期

页      面：74-87页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：This work was financially supported by the High‐level Talents'Discipline Construction Fund of Shandong University(31370089963078) the Shandong Provincial Science and Technology Major Project(2018JM RH0211 and 2017CXGC1010) the Research Funds of Shandong University(10000089395121) the Natural Science Foundation of Shandong Province(ZR2019MEM052 and ZR2017MEM002) The National Natural Science Foundation of China(grant no.52002287) the Start‐up Funding of Wenzhou University are acknowledged 

主　　题：lattice oxygen release lithium‐rich manganese‐based oxide cathodes reconstructed multilayer interface spinel phase transition‐metal ion migration 

摘      要：Layered lithium-rich manganese-based oxide(LRMO)has the limitation of inevitable evolution of lattice oxygen release and layered structure ***,a multilayer reconstruction strategy is applied to LRMO via facile pyrolysis of potassium Prussian *** multilayer interface is visually observed using an atomic-resolution scanning transmission electron microscope and a high-resolution transmission electron *** with the electrochemical characterization,the redox of lattice oxygen is suppressed during the initial *** situ X-ray diffraction and the high-resolution transmission electron microscope demonstrate that the suppressed evolution of lattice oxygen eliminates the variation in the unit cell parameters during initial(de)lithiation,which further prevents lattice distortion during long *** a result,the initial Coulombic efficiency of the modified LRMO is up to 87.31%,and the rate capacity and long-term cycle stability also improved *** this work,a facile surface reconstruction strategy is used to suppress vigorous anionic redox,which is expected to stimulate material design in high-performance lithium ion batteries.