文献类型：期刊文献

英文题名：Enhancing cyclic performance of lithium-rich manganese-based cathode via in-situ co-doping of magnesium and fluorine

作者：Guo, Zhihao Li, Lin Su, Zihao Peng, Gongchang Qu, Meizhen Fu, Yuanxiang Wang, Hao Ge, Wujie

第一作者：Guo, Zhihao

通信作者：Wang, H[1];Ge, WJ[2]

机构：[1]Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100039, Peoples R China;[3]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China

第一机构：Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China

通信机构：corresponding author), Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2023

卷号：437

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20224713148893);Scopus(收录号：2-s2.0-85142150743);WOS:【SCI-EXPANDED(收录号:WOS:000917166000004)】；

基金：This work was supported by the National Natural Science Foundation of China (grant No. 21805053, No. B050803), the Science and Technology Planning Project of Guizhou Province (No. [2019]1132), Collaborative Innovation Project of Industrial Cluster of Chengdu, Sichuan (2017-XT00-00001-GX) and the "Light of West China" Program of Chinese Academy of Sciences.

语种：英文

外文关键词：Lithium -rich manganese -based cathode mate; rial; Magnesium and fluoride co -doping; In -situ co -precipitation; Cycle performance

摘要：Lithium-rich manganese-based materials (LRM) are regarded as promising next-generation commercial cathodes due to their exceptionally high capacities and working voltages. However, lithium-rich manganese-based ma-terials are plagued with inferior cyclic stability and voltage fading, which greatly stifled their commercial transitions. In this work, the dopant F and Mg uniformly distributed lithium-rich manganese-based cathode material is firstly prepared via an in-situ co-precipitation and high-temperature calcination method. The F and Mg co-doped sample can demonstrate excellent cyclic stability (88.56%, after 100 cycles at 1 C), and higher initial discharge and coulombic efficiency by reducing the transition metal (TM) loss and structure stabilization. Thus, this work presents crucial findings in the development of lithium-rich manganese-based materials, which pro-vides a novel doping route and a vital method of cation-anion co-doping to prepare high-performing cathodes.