文献类型：期刊文献

中文题名：Integrating trace Ti-doping and LiYO2-coating to stabilize Ni-rich cathodes for lithium-ion batteries

作者：Hanwen Zheng[1];Zhihong Wang[1];Ling Chen[1];Hao Jiang[1,2];Chunzhong Li[1,2]

机构：[1]Shanghai Engineering Research Center of Hierarchical Nanomaterials,School of Materials Science and Engineering,East China University of Science andTechnology,Shanghai,200237,China;[2]Key Laboratory for Ultrafine Materials of Ministry of Education,Frontiers Science Center for Materiobiology and Dynamic Chemistry,School of ChemicalEngineering,East China University of Science and Technology,Shanghai,200237,China

年份：2023

期号：9

起止页码：74

中文期刊名：Particuology

外文期刊名：颗粒学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；

基金：This work was supported by the National Natural ScienceFoundation of China(grant No.21975074);the Innovation Programof Shanghai Municipal Education Commission,and the Fundamental Research Funds for the Central Universities.

语种：英文

中文关键词：Ni-rich cathodes;Dual modification;Specific energy density;Li-ion batteries

摘要：Ni-rich layered cathodes have become the promising candidates for the next-generation high-energy Liion batteries due to their high energy density and competitive cost.However,they suffer from rapidcapacity fading due to the structural and interfacial instability upon long-term operation.Herein,the Tidoped and LiYO2-coated Ni-rich layered cathode has been synthesized via a facile one-step sinteringstrategy,which significantly restrains the interfacial parasitic side reactions and enhances the structuralstability.Specifically,the trace Ti^(4+)doping greatly stabilizes the lattice oxygen and alleviates the Li/Nidisorder while the LiYO_(2) coating layer can prevent the erosion of the cathode by the electrolyte duringcycles.As a result,the Ti-NCM83@LYO delivers a high specific capacity of 135 mAh g^(-1) even at 10C andthere is almost no capacity loss at 1C for 100 cycles.This work provides a simple one-step dual-modification strategy to meet the commercial requirements of Ni-rich cathodes.